here - the old site

v072010
Mission Statement
OD6: Overdrive 6-Speed
Right Side Drive
RT250 aka Mr.Potato Head
Baker Drive Brake & Bonneville 3-Speed
SBD:Softail Belt Drive
FFP: Function Formed Primary
TorqueBox
PowerBox
Sprockets & Pulleys
Drivetrain Options
Baker Clutches
XL Products
Big Dog Products
Baker Online
Baker Apparel and Spectro Oils
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BAKER’s Unbeatable Warranty:
Let’s face it: when you are buying a top-of-the-line transmission, primary, or clutch you expect the best. You want to go the distance with
years of trouble free service. The BAKER R&D department rigorously validates each and every BAKER Drivetrain product to guarantee
customer satisfaction within our warranty periods. Because of the work we do in advance and our ongoing quality control measures, it
is rare that customers have problems with our products. That’s why BAKER Drivetrain offers one of the best warranties in the business.
Complete transmissions and gearsets carry a 5 year 50,000 mile warranty. Clutches, primaries, and ancillary parts carry a 2 year 20,000
mile warranty.
This is the way it should be. We guarantee that when you buy BAKER you buy premium, American-made top of the line innovations - but
we can also guarantee that we are going to stand by that product with unbeatable service for the long haul.
There’s something to be said these days for an American-made product with that kind of support. Our factory is just outside of Detroit, the
Motor City, in Michigan. We’re part of the every day grind just like you are. Each BAKER product is built to order when you order it, with
all parts made right here in the USA, by guys who know their shit about gearboxes inside and out.
We are the Drivetrain Authority: often imitated (by communist China slopes), never duplicated. We’ve changed the face of the Harley
aftermarket with our original overdrive 6-speed (OD6), Right Side Drive (RSD), DD6, DD7, N1 drums, FF primaries, reverse kits, and the
KKK clutch. Evolving and improving the iconic Harley Davidson® motorcycle is our business and we are really friggin’ good at it.
What does this give you? Peace of mind. Every time you push that button or climb on that kicker - you know there is a strong, dependable
drivetrain ready to go and that BAKER is right beside you every mile along the way.
Go ahead, give BAKER a call today and talk to one of our Sales/Tech professionals... We can promise you clear, English-speaking, tech
savvy people on our end of the line. Guys who ride and appreciate your bike like you do.
9804 E. Saginaw, Haslett, MI 48840
Phone (517) 339-3835, Fax (517) 339-4590, Toll Free (877) 640-2004
[email protected]
All prices in this book subject to change.
We have no relationship with any of the Asian knock-off artists that copy our products and pollute our great country with inferior gears and shafts made from steel alloys that would be more
appropriate for the manufacturing of soup cans. Any mention of other manufactures is for reference only. Mr.PotatoHead, JIMS, S&S, RevTech, Big Dog, are all trademarks of their respective
entities. BAKER Drivetrain and BAKER Inc. are not associated with the Harley-Davidson Motor Company. Sportster, Buell, Softail, Dyna, Road King, Ultra Classic, FXR, FLT, FLST, FLSTC,
FLSTF, FLSTFI, FLSTCI, FLH, FLTR, FLTRI, FLTCUI, FLHTC, FLHR, FLHRI, FLHRC, FXRS, FXRT, FXR2, FXR3, FXRSP, FXD, FXDL, FXDT, FXDLI, FXDXI, Shovelhead, Panhead,
Knucklehead, Evo, Evolution, Twin Cam, Screamin’ Eagle, FLH, Cruise Drive, Harley, H-D, Harley-Davidson and anything else we may have missed in this disclaimer that Harley-Davidson says
they own unless they are BAKER Drivetrain trademarks listed below are all trademarks of the Harley-Davidson Motor Company. BAKER Drivetrain, BAKER Six-Speed Overdrive, FunctionFormed, OD6, DD6, DD5, DSSC, Torquebox, 6-into-4, BAKER Billet Series,XL6, BAKER KKK, King Kong Klutch, Klassic Kicker Gears,BAKER 300, F6F, PowerBox, DD7, Street Performance
Clutch, FFP, FFPS,Synchronous Belt Drive, Drivetrain Authority and BAKER are trademarks of BAKER Inc., Haslett, Michigan.
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The older pilots refer to it as the Sound of Round. That’s the beautiful mechanical cacophony you hear from an
airplane with a Pratt & Whitney R-985 when its crawling through sky. That 985 cubic inch 9-cylinder radial makes a
sound that can’t be duplicated or imitated. Same goes for a Harley engine. A big displacement 45° V-twin with high
compression and a really nervous camshaft with lots of valve overlap sounds better than every girl in a strip club
simultaneously screaming your name.
At BAKER Drivetrain we are gear-heads and motor-heads; we love this shit. But we don’t make motors; we make
drivetrains and they often take a back seat to the iconic presence of the motor. The Custom and Performance catalog
is proof that we won’t let the drivetrain be overlooked. It’s importance as the caretaker of delivering that juicy V-twin
torque to the rear tire cannot be emphasized enough.
So you have some torque. The OD6 and PowerBox will handle 165 ft-lbs of torque. Both have a common gearset
but the PowerBox borrows heavily gusseted architecture from Satan’s transmission, the TorqueBox which begs for
250 ft-lbs of torque. The Function Formed Primary (FFP) has that classic belt drive look but it’s enclosed wet design
has a through-hole in the middle and is ready for mid control fabrication. And don’t forget the clutch, it is surrounded
by two bullies; the torque from the motor and the rear tire/pavement but the KKK clutch was born from a Cadillac
transmission, grew up in Detroit, and can kick anybody’s ass. And there’s more unique drivetrain components that are
only available in the catalog you are holding right now, so please check it out.
This company was started 12 years ago because motors were making more and more power, but nobody was taking
the drivetrain seriously. Make sure to choose the right drivetrain, chassis, and rear wheel to put the power to the
ground.
The components we offer for the Harley Davidson® drivetrain aftermarket are now broken up into 4 catalogs: Cruise
Drive era (2007-later), 5-speed era (1984-2006), 4-speed era (1936-86), and Custom/Performance (includes Big Dog
and Sportster/Buell). All four catalogs are available in hard copy or can be downloaded from our website. Each catalog
is technically informative, includes some reference pricing, and should provide the information necessary to improve the
performance of your American V-Twin. If, after reading this catalog, you still have questions then give our experienced
tech or sales staff a call at (877) 640-2004 or send an Email to [email protected].
Photo courtesy of Steve Berner
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the original 6-speed transmission
This is the ORIGINAL 6-speed design that revolutionized the American V-Twin
industry. Yet, it’s still the best overdrive 6-speed built to this day...hands down.
Our OD6 is built to comfortably handle the power from todays big-inch motors.
This transmission is rated for motors putting out up to 165ft/lbs of continuous use.
It is available as a complete transmission with a wide variety of case options and
configurations, or as a builder’s kit for your stock case application, which requires little
to no modification. The BAKER OD6 is available with many optional gear ratios to
match your engine torque and riding style.
Certain 94 and newer models require use
of separately purchased BAKER re-cal box
PN 95E-56 for correct electronic speedo
operation.
2-6C door (with
exhaust bracket
mount ear) shown
Available as a builder’s kit or complete transmission assembly for the following
applications:
PN
DESCRIPTION FITMENT
T401
Builder’s Kit, 2.94 1st, Tapered Shaft 1985-89 FL, Softail,
T401S Builder’s Kit, 2.94 1st, Tapered Shaft 1985-89 FXR
T701
Complete Build, 2.94 1st, Tapered Shaft1985-89 Softail
T702
Complete Build, 2.94 1st, Tapered Shaft1985-89 FL, FXR
401
Builder’s Kit, 2.94 1st
90-92 FL, 90-97 Softail,
90-94 FXR, 91-97 Dyna
401S
Builder’s Kit, 2.94 1st
99 FXR, 98 Dyna, 98-99
Softail
401SP Builder’s Kit, 2.94 1st
1999-00 Dyna
401P
Builder’s Kit, 2.94 1st
2000-06 Softail, 2001-05
Dyna
402
Builder’s Kit, 2.94 1st
1993-97 FL
402S
Builder’s Kit, 2.94 1st
1998 FL
404SP Builder’s Kit, 2.94 1st
1999-00 FL
404P
Builder’s Kit, 2.94 1st
2001 FL
404P2 Builder’s Kit, 2.94 1st
2002-06 FL
701
Complete Build, 2.94 1st
1990-97 Softail
702
Complete Build, 2.94 1st
1990-02 FL
703
Complete Build, 2.94 1st
1991-97 Dyna
704
Complete Build, 2.94 1st
1993-97 FL
801
Complete Build, 2.94 1st
98-99 Softail
803
Complete Build, 2.94 1st
1998 Dyna
804
Complete Build, 2.94 1st
1998 FL
901
Complete Build, 2.94 1st
2000-06 Softail
902
Complete Build, 2.94 1st
1999 FXR
903
Complete Build, 2.94 1st
1999-00 Dyna
904
Complete Build, 2.94 1st
1999-00 FL
003
Complete Build, 2.94 1st
2001-2005 Dyna
004
Complete Build, 2.94 1st
2001 FL
2002-06 FL
0042
Complete Build, 2.94 1st
Polished
FF oil
spout
included
in FL kits
and complete
builds
MSRP
starting at
$2395
3
OPTIONAL OD6
STANDARD DOOR
CONFIGURATIONS:
1) Ear Type (all finishes)
2) Carlini-type
3) Merch-type
4) 1984-86 type
5) No Ear (all finishes)
MSRP $135
TOP GEAR RPM:
5-SPEED VS. OD6
MPH 5-speed OD6
In 5th In 6th
65 2945 2533
70 3172 2723
75 3398 2923
80 3625 3118
Calculated data based on a 24/37
primary, a 32/70 secondary, and
a 25” rear tire.
OPTIONAL CASE
FINISHES:
1) Wrinkle Black
2) Polished
3) Raw
4) Chrome (on Evo
Billet cases only)
STANDARD RATIOS
Available No Cost
Options:
2.94, 2.21, 1.60, 1.23, 1.00, .86
- N-1 Shift Drum
- Reverse Pattern Shift Drum
Available Upgrade
Options:
OPTIONAL RATIOS:
1st gear: 3.24 & 2.82(R)
2nd gear: 2.08(R)
6th gear: .80 (deep overdrive)
- Complete build transmission
- Front or Rear Feed Hydrualic
Side Cover
- +1 Oil Pans
- BAKER Clutches
MSRP $40
FUNCTION-FORMED OD6 TRAP
DOOR AND ACTUATOR END COVER
AVAILABLE FOR UPGRADE!
We highly recommend
installing the separately
purchased high torque
bearing kit,
BAKER PN 189-56
FUNCTION FORMED OPTION:
- Available upgrade on Builder’s Kit or complete assembly
- Hydraulic or mechanical for BAKER LSD OD6’s only.
- Narrower, sleek, FF design
- Cleaner design; no fill plug or dipstick to clutter the look
- Available black anodized, polished or chrome
- Door PN: 490-6
- Mechanical Cover PN: 491-6
- Hydraulic Cover PN: 492-6
- Designed to fit all BAKER Softail, Dyna, and FXR doors. Will fit
stock FL case.
- Will work with all stock and aftermarket wet primaries. As well as
all aftermarket belt drives that fit an OEM 5-speed.
WITH ALL THE OPTIONS AND THE PROVEN DEPENDABILITY,
OUR OD6 IS THE PERFORMANCE TUNER’S CHOICE.
AVAILABLE RSD6 GEAR RATIOS
GEAR RATIO
1ST 2.82 (‘R’ RATIO)
or 2.94
or 3.24
2ND 2.08 (‘R’ RATIO)
or 2.21
3RD 1.60
4TH 1.23
5TH 1.00
6TH
.86
AVAILABLE RSD5 GEAR RATIOS
GEAR RATIO
1ST 2.82 (‘R’ RATIO)
or 2.94
or 3.24
2ND 2.08 (‘R’ RATIO)
or 2.21
3RD 1.60
4TH 1.23
5TH 1.00
We introduced RSD in 2001 when the 240 tires came out as
a solution to balance big tire customs and it accomplished
just that. More than ever with the popular 300+ tires and the
radical 360’s in circulation, RSD translates to zero offset
‘R’ ratio 1st and 2nd is available as an option at no cost. For drag racers, an ‘R’ Ratio
and a perfectly balanced radical custom. See below for a
setup means harder launches. For street racers, it gives the stoplight-to-stoplight
short course in offset 101.
performance advantage.
Front Wheel
Heavy
Big-Inch
Engine
Transmission
Assembly
Fatter, Wider
Rear Tire
OFFSET 101:
The Evo powered Harley Softail is the
design basis for custom aftermarket
components like frames, transmissions,
and engines. The positional relationships
between engine and transmission, engine
and frame, and transmission and frame
all go back to the Softail. The stock
Softail from the factory is a well-balanced
machine with no significant weight bias
from the left to the right.
If a wider than stock rear tire is used on
a Softail, the powertrain (engine and
transmission) must be moved to the left
to allow the 1-1/2” wide drive belt to clear
the left side of the rear tire. Moving the
powertrain to the left is referred to as
powertrain offset.
Powertrain offset can be achieved by
moving the transmission and/or engine to
the left, away from the stock position. The
math to explain this is easy; see the figure
to the left. The stock H-D Softail has a 130
size rear tire that is roughly 5.5” wide. The
300 tire is roughly 12” wide, which means
there is 3.25 more inches of rubber on
each side. This means the powertrain has
to move to the left about 3.25” or so.
BAKER RIGHT SIDE DRIVE SYSTEMS
ARE AVAILABLE FOR YOUR CUSTOM
APPLICATION, SOFTAIL, FLT, FXR, OR
DYNA (EVO OR TWIN CAM)
Call a BAKER Tech guy for transmission
applications and part numbers
FF Door and Actuator
optional, see page 12.
PN 465-6P Door and
Actuator set shown
Many choices in
offset pulleys
BAKER standard
hydraulic pulley shroud
-orBAKER standard
cable-type rear loader
pulley shroud
FLT style RSD door
-orDyna style RSD door
with removable tail section
No charge upgrade
RSD6 ignition kill shift drum
in several
finish options:
4
Mr. Potato Head® was conceived in R&D a few years back to study the configurational possibilities of putting universal
bosses on a featureless tranny case. Just like the Mr. Potato Head® toy, you can end up with a genetic hermaphrodite
with a little off-the-menu creativity. The universal tranny case accepts an A-flange, B-flange or Evo flange. It also accepts
all kinds of tail stocks. This exercise yielded the easiest solution
to offsetting a tranny case side-to-side or up-and-down in
short production runs.
The RT250 vision began at Rolling
Thunder when they divulged plans to
develop a FL-type Bagger frame that
was setup for a 250 tire and Softail
length primary in a balanced RSD
chassis. They approached us about
doing a special tranny that was
specific to this frame. Mr. Potato
Head® technology finally
found its first home and we
named it the RT250 project.
Left side view shows tail stock
and front flange removed. PN RT250A-P
MSRP $3995
Features:
- Utilizes stock Softail primaries or BAKER FFP
- Tranny is offset ½” to the left to tuck the drive belt/chain “
inside the frame rail
- No ½” motor sprocket extension required; tranny is slammed
against the inner primary
- Tranny mainshaft is ½” shorter than stock
- Oil bag is separate and below the tranny case for superior
cooling
- Frame has +2” in backbone for additional primary length
- Stock Harley® FL frames converted by Rolling Thunder and
original VIN retained for no registration hassle
- Frames accept stock seat, bags, tank, and front end
Note the following:
- Tail stock is securely located via two thick walled
hollow dowels and three 3/8” bolts
- Front flange is pinned down with seven 5/16 screws and
two dowels
- ½” deep relief in starter ear and case shows
½” left offset
- Low profile shift lever on tranny case required to
clear inside of inner primary
- DD6R gearset with 3.45 1st, 2.56 2nd, 1.87 3rd,
1.44 4th,1.15 5th, &1.00 6th
- Low profile hydraulic pulley included with choice of low
pro 32 pulley or chain sprocket
- Other pulley covers, including cable type, available
- TorqueBox inspired detent system for smooth precise shifting
5
PN
Description
RT250*-P
RT250 Transmission assembly, polished
RT250*-B
RT250 Transmission assembly, wrinkle black
*Specify “A” for A-flange, “B” for B-flange, and “E” for Evo Flange
low-profile pulley cover
PN RT127-56HC
MSRP $599
PN RT292
MSRP $169
PN
RT127-56HC
RT127-56HP
RT292
Description
RSD pulley cover, chrome, hydraulic Low Pro
RSD pulley cover, polished, hydraulic Low Pro
32 tooth low profile pulley, long life steel
Fitment
All BAKER RSD except PowerBox, TorqueBox, & Drive Brake
Low Profile features
- Designed for 1-1/8” wide belts and smaller
- FF aesthetics chiseled out of 6061-T6 aluminum
- Low profile external features for maximum exhaust clearance
- 1.5” diameter piston included
- Compatible with H-D® or 11/16” hydraulic master cylinders
- Must use low profile RT292 pulley or chain sprocket; will not fit
over standard width pulleys
Drive brake transmissions
clean up the rear wheel brake related clutter.
We designed our Drive Brake transmission as a complete system to
address some concerns we had with bolt on systems. Some bolt on
systems had small diameter rotors with partial brake pad engagement;
the one we evaluated wouldn’t even allow us to lock up and skid the rear
wheel. So we designed our system with an 8” rotor and full pad engagement.
With a prototype we were able to lock up the rear wheel and throw it sideways.
Aesthetically, it is super clean with the caliper located in between the belt rungs and
a minimalistic Function Formed hydraulic actuator spider.
PN R7211PB-BRK
MSRP $4495
Features:
- 8” stainless steel rotor
- 6061-T6 aluminum clutch actuator spider with
1.5” diameter piston (hydraulic only). 11/16”
master cylinder recommended
- Dual piston brake caliper with PM guts
- Inboard piston bore is an integral part of the door
- Polished stainless steel stand-offs under front spider legs
- Dual brake bleeders; one above each piston
- Available with show polished or chrome finishes
- Chrome top cover available with or without neutral switch
- 29 tooth .5” offset pulley standard
- N1 drum optional - ‘R’ ratio no cost option for big motor applications
Standard ratio gears
1st through 6th:
2.94, 2.21, 1.60, 1.23, 1.00, .86
R-Ratio gear ratios
1st through 6th:
2.82, 2.08, 1.60, 1.23, 1.00, .86
Fits 1990-99 Softail-based and custom Right Side Drive
PN
Description
R701PB-BRK R7211PB-BRK R701CB-BRK R7211CB-BRK Show polished Drive Brake transmission assembly w/ standard ratios
Show polished Drive Brake transmission assembly w/ ‘R’ ratio
Chrome Drive Brake transmission assembly w/ standard ratios
Chrome Drive Brake transmission assembly w/ ‘R’ ratio
The 3-speed cartridge style
gearset installs into any
1990-2006 5-speed based
Big Twin transmission case
with no modification.
Gear ratios:
1st 2nd 3rd 2.54
1.60
1.00
The Direct Drive 3-speed was developed for
high horsepower competition applications like
hill climbing, Bonneville and ¼ mile.
The special 3-speed shift drum is the N1 type
with neutral on bottom for a 0-down, 3-up
shift pattern. The drum has no provision to
trigger a neutral switch.
PN 301K
MSRP $1495
Countershaft and 3rd gear are cut out of one
piece of 8620 steel for superior strength over
a stock 5-speed. Other than the countershaft
and the special 2.54 ratio 1st gear pair, the
shafts, and other gears are stock BAKER
5-speed items.
6
FEATURES:
PN shown SBD-0-NS
MSRP $2575
We’ve been making transmission pulleys for years, both
aluminum and steel. In short, aluminum pulleys are great for
racing but do not hold up with miles. Deformed aluminum
pulley teeth will lead to saggy belts. So we manufacture our
SBD belt drive with steel pulleys front and rear for those
who plan on putting on some miles.
Using steel on the clutch basket pulley also greatly reduced
the loose bolts rattling sound that is heard on some belt
drives. Both steel pulleys are plated for corrosion protection.
Available with zero and ½” offsets for wider rear tire
applications.
SBD belt drives for 1990-2006 softail applications:
PNdescription
SBD-0-S
SBD-0-S-BA
SBD-1/2-S
SBD-1/2-S-BA
SBD-0-NS
SBD-0-NS-BA
SBD-1/2-NS
SBD-1/2-NS-BA
7
No Offset, Outside Support, Polished
No Offset, Outside Support, Black Anodized
1/2” Offset, Outside Support, Polished
1/2” Offset, Outside Support, Black Anodized
No Offset, No Outside Support, Polished
No Offset, No Outside Support, Black Anodized
1/2” Offset, No Outside Support, Polished
1/2” Offset, No Outside Support, Black Anodized
- 1.54 pulley ratio with a 28 tooth
pulley on front and a 43 in the rear
for a 7% increase in torque to the
rear wheel on stock Softails from
1994 to present.
- Motor plate and edge guard are
made of 6061-T6 plate stock. Pulley
caps and dog bone are made of
6061-T6 forgings.
- 10 plate clutch
- 2.4” Wide, 14MM Tooth Proprietary
Designed Belt
- Available with or without the
outside bearing support
(dog bone), however the dog
bone configuration is highly
recommended.
- Available in show
polished or black
anodized finishes
- 66 tooth ring gear comes with
matching 9 tooth, one piece
starter jackshaft riding on a teflon
impregnated busing.
PN 4100-FFP-P
POLISHED
MSRP $1995
The primary drive housing is the most recognizable piece of architecture on
American motorcycles. It is centrally located and transfers power from the
engine to the transmission.
We sculpted our forged 6061-T6 Function Formed Primary (FFP) to enhance
the natural mechanical beauty of the elements inside. A SolidWorks 3D model
of the clutch, chain, starter pinion, and motor sprocket was created and then
we sparingly started adding material to wrap around those elements. No extra
aluminum, just mechanical beauty. And there’s a glory hole in the middle for
that open look, with the benefits of the chain intact.
Available in a Black
Anodized finish.
PN 4100-FFP-B
BLACK ANODIZED
MSRP $2,145
FEATURES:
-6061-T6 forged Inner and Outer
-1 Piece starter jackshaft for strength
-Full wet Primary set up
-Fits stock and custom applications
FFP fits all Softail models, Evo and Twin Cam without modification.
Compatible with stock 66-tooth and 102-tooth clutches, compensating
sprocket, chain, and starter motors. Each primary kit includes an inner primary
housing, outer primary cover, special starter jackshaft, chain adjustment shoe
and mechanism, gaskets, and fasteners.
For performance junkies with mountain motors, the FFP has an optional
internal outside bearing support (FFPS). Applications above 150 ft-lbs
require the outside clutch support to keep the transmission mainshaft from
flexing. The outside bearing support version is the first enclosed, wet primary
available. Belt drives have been available for years with outside supports. Our
new KKK clutch is required with outside support spider. See page 13 for
KKK clutch details.
The compact design of the FFP dictates the
following available sprocket/chain combinations:
Motor sprocket 21
22
23
24
25
27
28
Clutch sprocket Chain length
(# of pitches)
36
35
38
37
36
38
37
80
80
82
82
82
84
84
FFP for 1990-2006 softail applications:
PN
4100-FFP-P 4100-FFP-B 4101-FFP-P 4101-FFP-B Description Polished (9 tooth jackshaft) Black Anodized (9 tooth jackshaft) Polished (10 tooth Jackshaft) Black Ano (10 tooth Jackshaft) 8
THE TORQUEBOX has 250 foot pounds of torque load capacity!
The torque output of an engine is proportional to the bore and stroke. Engines make torque and drivetrain components
take torque. It is torque, not horsepower that destroys clutches, transmissions, and drive belts. The torque capacity of a
transmission is proportional to the gear width and the center distance between the two shafts.
All stock Harley transmissions and aftermarket transmissions have a center distance of 2.5”*. By increasing the center
distance 20% to 3.0” the Torquebox conservatively increases the torque capacity to 250 ft-lbs, continuous duty!
In the early Torquebox design stages, the goal was set to design a continuous duty 250 ft-lb gearbox that visually
looked like a 450 ft-lb gearbox on the outside. We achieved this by taking design cues from classic race-bred American
superchargers and not having any excess material, anywhere. We achieved our goal.
The Torquebox is available as a 5 or 6-speed, left or right side drive. The 6-speed is identical to the 5-speed except for the
addition of two gears and a different drum. The right side drive version is the same as the left except for the mainshaft. All
frame, starter, and clutch interfaces are identical to stock
1990-1999 models.
FEATURES:
- Compatible with most softails and custom builds
- Two rail shift form system with common fork used three times
- 2” diameter shift drum suspended by two radial ball bearings mounted to a
fixed spindle axis
- Ratchet pawl has overshift inhibitor (up and down) and is mounted on two
radial ball bearings. Shift lever shaft cross sectional area is 65% larger
than stock.
- Frictionless detent system. A 3/8” primary ball bearing is cradled by, and
rolls on, 50 secondary micro ball bearings. In turn, the cradle is part of a
plunger that actuates during shifting and is guided by a tertiary linear micro
ball bearing system.
- Ignition kill and neutral switches top mounted for easy dwell timing
adjustment.
- Shift system lever ratio is 35% less than stock. Bearing mounted shift shaft
yields low system hysteresis. Short, tight shifts are the result. N-1-2-3-4-56 shift pattern for false-neutral avoidance.
- Shaft material is super strong 9310 – the best steel made – this isn’t
standard by any means. Gears material is 8620. Very large 8.125 diameter
pitch gear teeth. The gear teeth are 2x circumferentially thicker than stock.
Tooth flanks are finish-ground after heat treat on a 1.5 million dollar
grinder. AGMA class 12 grade gears.
- Housing is all billet construction from 6061-T651 aluminum. We start with
95 lbs of aluminum and end up with 17 lbs of case and 78 lbs of chips.
PN TB521L,
R-ratio left side
drive 5-speed,
MSRP $4695
9
1st
2nd
3rd
4th
5th
6th
Pn
TB521L
TB621L
TB521R
TB621R
TBZ5L
TBZ6L
TBZ5R
TBZ6R
GEAR RATIOS:
R-Ratio
2.75
2.05
1.55
1.18
1.00
.86
Description
Z-Ratio
2.61
1.89
1.50
1.12
1.00
.95
Fitment
R-Ratio Polished LSD 5 spd Evo Softail and Custom
R-Ratio Polished LSD 6 spd Evo Softail and Custom
R-Ratio Polished RSD 5 spd Right Side Drive
R-Ratio Polished RSD 6 spd Right Side Drive
Z-Ratio Polished LSD 5 spd Evo Softail and Custom
Z-Ratio Polished LSD 6 spd Evo Softail and Custom
Z-Ratio Polished RSD 5 spd Right Side Drive
Z-Ratio Polished RSD 6 spd Right Side Drive
PN TBZ6R, Z-ratio
right side drive
6-speed
MSRP $5595
PN PBR7211PN
PN PBL701PN
MSRP $3595
MSRP $3695
approachable function-formed look
without having to pay for overkill strength
The design directives for the TorqueBox were clearly established in the early stages of development. This flagship
gearbox had to have a 250 ft-lb torque capacity gearset but externally look like 400 ft-lb standing still. Development
costs and resultant retail price were deemed irrelevant. By choosing the venerable 6-71 blower for architectural
inspiration, we inadvertently gave rise to what is now trademarked as Function Formed™ design.
Enter the new PowerBox; Function Formed™ looks without the need to pawn your guns or your wife’s jewelry. Design
inspiration from the TorqueBox coupled with a diamond ground 8620 steel 6-speed overdrive gearset gives the
PowerBox an input torque capacity of 165 ft-lb, with a 400 ft-lb curb appeal; some may argue more. More because the
tidy compact design of the PowerBox makes the function Formed design elements pop out more. 34Ds will always be
noticed more on a petite chick than a larger chick; same concept.
PN
PBR701PN PBR7211PN PBL701PN PBL7211PN Descriptionfitment
Show polished RSD PowerBox transmission assembly with standard ratios
Show polished RSD PowerBox transmission assembly with ‘R’ ratio gearset
Show polished LSD PowerBox transmission assembly with standard ratios
Show polished LSD PowerBox transmission assembly with ‘R’ ratio gearset
1990-99 Softail-based RSD bikes
1990-99 Softail-based RSD bikes
1990-99 Softail and Custom frames
1990-99 Softail and Custom frames
Features:
GEAR RATIOS:
- Standard ratio gears 1st through 6th: 2.94,
2.21, 1.60, 1.23, 1.00, .86
- R-Ratio gear ratios 1st through 6th; 2.82, 2.08,
1.60, 1.23, 1.00, .86
- Hydraulic actuator with 1.5” piston standard.
11/16” master cylinder recommended
- RSD comes with choice of 29 tooth zero offset
pulley, 23 tooth or 24 tooth .2” chain sprocket
- RSD can be upgraded with various offset chain
sprockets and sizes to suit application. No pulley
option available due to tight actuator spider size
- LSD comes with choice of pulley or sprocket
- LSD can be upgraded to all pulley and chain sizes
and offsets to suit application
- No neutral switch for clean look
- No cost upgrade to N1 drum
- Speed sensor provision located on
back of case requires .120 spacer
- 12 point stainless steel ARP fasteners
- Choice of standard and ‘R’ ratio gearsets
10
Aluminum Alloy Race Pulley
Race pulleys are the lightest pulleys available. A stock 32 tooth Harley pulley weighs 5.2 lbs and the equivalent Race
pulley weighs 2.0 lbs; a 61% weight savings. This reduction in mass translates into reduced ‘flywheel effect’ and
allows the engine to rev quicker. Hard anodized for wear resistance and corrosion protection. Absolutely required for
performance applications but not recommended for high mile touring. Part numbers listed are zero offset and fit 19942006 applications. 1985-93 applications require sprocket spacer and seal retrofit. Call tech line to inquire about 32 tooth
offset pulleys available in .25, .50”, 1.0”, 1.5”, and 2.0” offsets. Custom offsets available by
special order.
# of teeth
29 30 31 32
34 Aluminum PN
29BD-56
30BD-56
31BD-56
32BD-56
34BD-56
PN 32BD-56
MSRP $180
Steel Long Life Pulley
Made from a solid chunk of 1045 steel and are 23% lighter than stock. Recommended for performance applications
where 100,000 mile pulley life is required. Part numbers listed are zero offset and fit 1994-2006 applications. 1985-93
applications require sprocket spacer and seal retrofit. Call tech line to inquire about 32 tooth
offset pulleys available in .25, .50”, .80”, .875”, and 1.0” offsets.
# of teethSteel PN
29 29BD-56F
30 30BD-56F
31 31BD-56F
32 32BD-56F
33 33BD-56F
34 34BD-56F
PN 32BD-56F
MSRP $169
530 chain sprockets
Moderate to extreme engine performance can raise hell with the stock secondary belt drive. The bullet proof remedy for
this shortcoming is to convert to a 530 chain. Sprockets are available in 3 offsets; .2”, .5”, and .9”. The .2” sprocket is
based off the PN 37709-89 21 tooth Sportster sprocket. The .9” sprocket is the maximum offset that can be used and still
allow room for the chain to clear the inside of the inner primary housing. .5” and .9” sprockets are generally used for wider
rear tire applications. Part numbers listed fit 1994-2006 applications. 1985-93 applications require sprocket spacer and
seal retrofit.
# of Teeth
19
20
21
22
23
24
.2” PN
19T02-56
20T02-56
21T02-56
22T02-56
23T02-56
24T02-56
MSRP $19- Spacer
$5- Seal
.5” PN
.9” offset
21T05-56
22T05-56
23T05-56
24T05-56
23T09-56
24T09-56
MSRP $65
Sprocket Spacer
Our sprocket spacer is a direct replacement for the stock spacer except
ours is case hardened steel that has a Rockwell ‘C’ hardness of 55. No
more gouging, no more leaks.
PN 33344-94S Sprocket Spacer, 94-Up Big Twin & Sportster
PN 12067B Main Drive Gear Seal, 94-06 Big Twin
11
PN 24T02-56
The BAKER Heavy Duty Throwout Bearing Kit replaces the failure-prone stock parts and eliminates throwout bearing associated headaches. The larger thrust bearing features a 97% greater surface area and
77% greater static load capacity than that of the stock throwout bearing. The brass spacer eliminates the
possibility of bearing crush and disintegration. It is the perfect compliment for those running heavy duty
clutches in a high horsepower abusive environment.
Features
- Larger thrust bearing with 97% greater surface area than the stock throwout bearing.
- 77% greater static load capacity than the stock throwout bearing.
- Brass spacer eliminates the possibility of bearing crush and disintegration which can lead to costly
transmission failures.
MSRP $79
PN
Fitment
TBK-56L 1987-2011 5 and 6-speed Big Twin models with left side drive and cable actuated clutch.
PN
BW127-56MC
Description
Pulley cover, chrome, cable type, Bat Wing
Fitment
- All BAKER RSD except PowerBox, TorqueBox, & DriveBrake
MSRP $399
BATWING PULLEY COVER FEATURES
- Designed for extra pulley and belt coverage
- Compatible with standard -87 style clutch cables
- Includes ball ramp actuator assembly
- Limited production run
- Upgrade option on complete assemblies only $200
- Thicker Billet Function Formed design of actuator eliminates flex from heavy duty clutches
- Dipstick is deleted for neater packaging
- Hydraulic line routing is hidden and cleaner
- Black anodized, polished or chrome finish
FITMENT:
- BAKER RSD OD6 cast Softail cases
- All 530 chain sprockets and 30-tooth belt pulleys
PN
465-6P
465-6C
465-6BA
Description
Door and Hydraulic Actuator - Polished
Door and Hydraulic Actuator - Chrome
Door and Hydraulic Actuator - Black Anodized
The Voyeur top cover is compatible with the late style (small pawl pin) ratchet pawls used from 1999-2006 except
1999 Softail and gives you a full view of the shift system and partial of the gearset through the top cover made from
billet optical grade Zelux, annealed and vapor polished for a clear view.
Will fit all BAKER products from Mid-2004-up with BAKER 555-56A & 555-56L ratchet pawls. Voyeur top cover can
be used on other 5&6 speed applications if upgraded with a BAKER ratchet pawl. The old style ratchet is bulky and
interferes with the inside of the top cover on downshifts. Note: Not compatible with any Dyna applications, BAKER
Billet series transmissions, TorqueBox, & DSSC
PN
MSRP $295
441-56P
Description
Top Cover, Zelux Voyeur
BAKER Clutch Pack Replacement Kits contain all necessary fiber and steel plates
to restore like new performance to your BAKER clutch.
The Trans Rebuild Kit is an all inclusive kit designed to freshen up those high
mileage bikes. Developed to work specifically with our OD6, DD6, DD5 and OEM5
left side drive transmissions. Includes bearings, snap rings, gaskets, seals and
retaining nuts.
Call the BAKER tech line for part numbers and applications.
Rebuild Kit MSRP $175
Clutch Pack Kit, MSRP $200
12
MSRP $1395
MSRP $95
AC/DC Pinion
Used to convert your
102 tooth configuration to
a 66 tooth configuration
“Torque capacity of a clutch is dictated by the diameter and
the number of clutch plates.” So the goal was to implement
the biggest diameter clutch plates that would fit underneath
the starter ring gear minor diameter. We found the biggest
ones in a Cadillac 5-speed automatic tranny so we designed
a clutch around 20 of these massive plates.
FEATURES:
- Fits any Big Twin from 1990-2006 (except 2006 Dyna).
- 20, 7 inch diameter, single sided K2 friction plates
- Three interchangeable coil spring options. Light, medium and heavy.
- BAKER’S exclusive1-piece clutch basket and 66 tooth ring gear design
- Larger torque capacity
- Positive pressure plate alignment with Perma-Glide bearings
- Red anodized clutch carrier and pressure plate
OPTIONS:
- AC/DC Pinion gear available for use with 102 tooth configurations
- 35, 36, 37,or 38-Tooth 8620 steel sprocket options
- Outer bearing support. ** Designed to work directly with the FF Primary
PN
20P200-KK-35
20P200-KK-36
20P200-KK-37
20P200-KK-38
20P200-KK-S-35
20P200-KK-S-36
20P200-KK-S-37
20P200-KK-S-38
13
Description
KKK w/35 Tooth Clutch Sprocket
KKK w/36 Tooth Clutch Sprocket
KKK w/37 Tooth Clutch Sprocket
KKK w/38 Tooth Clutch Sprocket
KKK w/35 Tooth Clutch Sprocket & Outer Bearing Support
KKK w/36 Tooth Clutch Sprocket & Outer Bearing Support
KKK w/37 Tooth Clutch Sprocket & Outer Bearing Support
KKK w/38 Tooth Clutch Sprocket & Outer Bearing Support
MSRP $695
PN: SP1000
Fitment 1994-2006
(except 06 Dyna)
The 9-plate clutch is the competitively priced smaller
brother of the KKK. A must have for all 1990-93 Big
Twins, and 1994 and newer Big Twins with 9 tooth pinion,
this clutch comes with BAKER Drivetrain’s standard for
premium products. It has a one piece basket, which is 23%
larger than stock, and a hard anodized hub for increased
strength and durability. We moved the friction material
towards the outer diameter of the plate, which increases
torque capacity and reduces heat build-up, all resulting in
a longer clutch life.
FEATURES:
- Fits any Big Twin from 1990-2006 (except 2006 Dyna).
- Blue anodized clutch carrier and pressure plate
- Compatible with applications up to 125 ft-lbs. Diaphragm-type pressure
plate spring with ergonomic break-over feel during disengagement.
- Comes with standard diaphragm spring installed, and a seperate heavy
duty rated spring.
- 9 Kevlar 2-sided clutch plates with large mean radius
- BAKER’S exclusive1-piece clutch basket and 66 tooth ring gear design
- Standard and Heavy-duty springs included
OPTIONS:
- available with a 35, 36, 37, or 38 tooth 8620 steel sprocket
- AC/DC Pinion gear available for use with 102 tooth applications
PN
9P300-56-35
9P300-56-36
9P300-56-37
9P300-56-38
Description
9 Plate w/35 Tooth Clutch Sprocket
9 Plate w/36 Tooth Clutch Sprocket
9 Plate w/37 Tooth Clutch Sprocket
9 Plate w/38 Tooth Clutch Sprocket
STRONGEST CLUTCH BY DESIGN
King Kong Klutch basket
Street performance 9-plate
clutch basket
Both our King Kong Klutch and
Street Performance 9-plate Clutch
have 66 Tooth ring gears - the stock
basket here has 102 teeth.
o f the
Starting tip
day
Never snap the throttle open and
closed when the starter is engaged
and turning over the motor. If you
have a clutch with a 102 tooth ring
gear, you could shear teeth. If you
have a 66 tooth ring gear, you
could bend the mainshaft on the
transmission.
Stock clutch
The fundamental design approach of the BAKER clutches is different than anything available from the factory or other
aftermarket manufacturers. For strength reasons, we manufacture our clutch with a 1-piece ring gear/basket. First, a
large donut shaped forging is turned on a CNC lathe to the shape of the finished basket. Next the internal splines for the
friction plates are formed with a 6-foot long broach. Threads for attachment of the carrier are machined on a mill, then
the ring gear teeth are hobbed on the same type of machine that makes our gears. It is not cheap to make the heart and
soul of our clutches in this manner but the end result justifies the expense.
The radial strength gained by integrally putting the ring gear around the basket is analogous to the steel bands placed
around a whisky barrel. Without the steel bands, the barrel would explode and that would be alcohol abuse. Additionally,
the ring gear is supported by the hoop of the basket and this guarantees the T.I.R. at the pitch line of the ring gear teeth
(no egg shaped ring gear).
We only manufacture clutches with the 66 tooth ring gear. In 1994, Harley migrated from the 66 tooth ring to a 102 tooth
design to achieve more starting torque. The flip side of that is the teeth sheer off especially on modified motors.
35-Tooth Sprocket KKK clutch diameter dwarfs the
factory clutch plate
36-Tooth Sprocket
37-Tooth Sprocket
38-Tooth Sprocket
Clutches fit 1990-2006 big twin models
(except for 06 Dyna).
14
The BAKER™ XL6 is a six-speed overdrive ‘cartridge style’ gearset
that converts any existing 1991-2003 Sportster/Buell to a BAKER™
six speed. 2nd through 5th gear ratios are effectively the same as
stock, 6th gear is a true overdrive for a 511rpm drop at 75mph.
XL6 KITS INCLUDE:
- 6061-T6 trap door
- Complete gearset including shafts and gears, less
the 5th (maindrive) gear pair. 5th gear pair from
existing 5-speed is re-used with the XL6 installation.
- Gearset is assembled to the trap door including
bearings, ball bearings, thrust washers, and
retaining rings.
- Shift drum and detent plate with optimized geometry.
No flimsy retaining clip to hold the detent plate to the
drum. Ours is bolted on with a machine screw.
- Low effort detent spring.
- Three billet steel shift forks with roller pins and
cotter pins.
- Steel template for accurate case modification.
- ‘XL6’ engraved derby cover (P/N 202 & 203).
PN 202 XL6 cartridge gearset
MSRP $2350
Other drivetrain components for Sportster/Buell:
PN
271-5
291-5
299-5
292-56
292-56F
293-56
293-56F
230-56S
231-56S
232-56S
233-56S
Steel Long Life Pulley
Smooth shift kit, for stock 5-speed
Reverse pattern drum, stock 5-speed
Trap door, Stock 5-speed
26 tooth pulley, aluminum race
26 tooth pulley, long life steel
28 tooth pulley, aluminum race
28 tooth pulley, long life steel
530 Chain conversion kit, 48/23 ft/rr 530 chain conversion kit, 50/23 ft/rr
530 chain conversion kit, 52/23 ft/rr
530 chain conversion kit, 54/23 ft/rr
PNdescription
201
XL6 Builder’s Kit 202
XL6 Builder’s Kit 203
XL6 Builder’s Kit For S&S Dry Primary Case Only
NOTES:
Race Pulley
XL 5-Speed Smooth
Shift Kit
15
Description
- Standard ratios for the PNs shown above are 2.52,
1.96, 1.44, 1.18, 1.00, .86
- Specify ‘S’ ratio 1st (2.37) and 2nd (1.88) by
changing the ‘0’ in the PN to a ‘2’
- Specify no-cost reverse pattern (1-up, 5-down) drum
by adding an “R” to the PN
Billet 5-Speed Door
Fitment
5-speed
5-speed
5-speed
5-speed or XL6
5-speed or XL6
5-speed or XL6
5-speed or XL6
1991-2003 Buell
1991-2003 Buell
1991-2003 Buell
1991-2003 Buell
Fitment
91-94 Sportster/Buell
95-03 Sportster/Buell
91-03 S&S dry xl case
shown PN BD-BDM-1/2
$2995 MSRP
We manufacture the whole drivetrain for 2005-later Big Dogs. The center distance of the primary drive is based on our
DSSC and is not common with Softail. We used our knowledge of the factory system to develop our Synchronous Belt
Drive. The pulleys are hobbed from stainless steel blanks for durability and corrosion resistance. The structural integrity
of the stainless steel clutch pulley significantly reduces that loose tappet rattling sound that some other belt drives make
when the clutch is disengaged. The indestructible pulleys are driven with a large tooth 2.4 inch belt and coupled with a
radial ball bearing suspended outside bearing support.
PN
BD-BDM-1/2
BD-BDM-0 Description
Synchronous Belt drive, ½” offset, polished
Synchronous Belt drive, 0 offset, polished
Fitment
2005-later, 250 tire bikes
2005-later, 300 tire bikes
Service and support for Big Dog
We service Big Dog transmissions and clutches and offer individual components for both. However we recommend our
in-house rebuild service. Given our experience and our $50/hour shop rate it is highly recommended. Additionally, we
offer derby covers, motor sprocket covers, inspection covers, inspection cover seal rings, pulley covers and pulley cover
parts, optional primary paper gaskets, OEM primary O-rings, motor sprockets, and chains. Call our sales department for
availability and pricing.
16
WE’VE GOT SOCIAL NETWORKING SKILLS YO!
BAKER is hip to the new way that our customers are learning and
communicating - We have been paying attention the past few years to the
growing number of bikers who spend their time online. We have also noticed
that information passes quickly, and freely online.
With that in mind: we have also launched a BAKER MySpace, BAKER
Facebook and you can even catch up to the minute BAKER sales and
updates on your phone by following us on Twitter.
So look us up on your favorite social networking site to keep up with the
latest happenings at BAKER. You will hear about what sales are hot, what
deals we’re passing to our dealers, and more... we can’t gaurantee that you
won’t get a random dirty joke or bathroom update. You’ve been forewarned.
!
S
U
W
O
L
L
O
F
D
LOG ON AN
BAKER ONLINE STORE:
BAKER product offerings 10 years ago were pretty damn simple. We offered 8 different part numbers and that was it. Our
printed catalog easily captured and conveyed our product line. American motorcycle enthusiasts got their information by
calling our toll free number, reading magazines, and attending bar stool seminars. Back then, nobody in our world relied
on, or trusted, the internet to obtain nitty-gritty details on neat new stuff for their scoot. But today, thanks to pornography,
bikers are as web-savvy as the rest of the population. And it’s a good thing because BAKER product offerings these days
number in the thousands and many configurational options are available for any one application. In 2009 we launched the
new BAKER E-Commerce site to simplify the task of product selection for our dealers (password required) and the public.
Look for the E-Commerce button prominently displayed on our home page. It will guide you interactively, through the
maize of options, so you end up with the right configuration for your application.
The ECommerce store has proved very quickly to be an excellent tool for our dealers and retail customers alike. For
complete updates, log on, and make sure we have your email address in our database! It’s the best way not to miss out!
17
6-speed
baker brand
made in the usa
baker logo
MSRP $20
twisted fuck
king of gears
vintage baker
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BAKER has a full line of apparel including t-shirts, hats, stickers, tin signs
and even shop jackets and shirts for men and women. Check out our
Official BAKER Online Store for availability and the latest merchandise
out there! What better way to brag about your BAKER?
There Is More To A Transmission
Than Just Metal
As a company tenaciously focused on any improvement to the
American Big Twin drivetrain, BAKER Drivetrain recognizes the
fluid in the transmission is key in the performance and life of a
transmission. It is a mechanical part of it as much as the gears,
case, bearings, etc…so it must be of quality. The Spectro
Platinum Heavy Duty 6-Speed Transmission Lubricant meets
our BAKER Drivetrain quality standards for recommended
transmission oil. Our standard for recommending oil is that it
must have optimized properties tailored only for components
in a V-Twin motorcycle transmission and it must exceed all
others in excellence – like our own products do. Cheaper oils
cannot provide all these qualities.Spectro’s 6-Speed formula
base is synthetic group 4 base stock which is the highest rating
for a synthetic lubricant. It is pure with absolutely no petroleum
product blended into it.
PN BD-75W140
MSRP $14
18
The V-8 car culture and V-twin bike scene are similar in many ways; American muscle, performance, and
torque . If you drop a ZZ572 into your project car, don’t overlook your transmission and rear end because that
650 ft-lbs of torque is not kind to drivetrain components. Same goes for your project bike. Today’s 124+ inch
motors can grenade an anemic clutch and slope transmission. Make sure to choose drivetrain components that
are up to the task. Our tech experts have the street and strip knowledge necessary to help you determine the
right gear ratios and drivetrain components for your application. After that, the biggest challenge will be finding
new rear tires.