LS Series

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PROFESSIONAL
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Pro CHEV Y odels P
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Armo es Piston
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LS Se
As the leader in LS-1 forged pistons, Wiseco pulled out all the stops when designing
the LS Series. These pistons are designed to accommodate the reluctor ring on
stroker cranks without having to notch the pin bosses.
Offset pins like O.E. and skirt shapes specifically designed for street applications
make these the best available. They have been tested successfully in the highest
horsepower applications.
LS Series
LS 5.3 • 3.622 Stroke
Kit
Part #
Bore
K474M96
3.780
K474M965
3.800
Comp.
Ht.
Stroke
Rod
Std.
Avg.
0 Deck at Deck
Ht. Wt.
1.300
3.622
6.098
6.125
9.209
9.236
9.240
FT -2.2
10.9
6.098
6.125
9.209
9.236
9.240
-7cc
11.2
Volume
Pin Part #
(included)
Std. Tension Rings
1/16, 1/16, 3mm
(included)
10.4
S643
.927 x 2.250
3805HF
10.8
S643
.927 x 2.250
3805HF
Compression ratio at:
58cc
61cc
3785HF
Valve
Pocket
LS1,2,6
LS 5.3 • 4.000 Stroke
K473M96
3.780
K473M965
3.800
1.110
4.000
3785HF
LS1,2,6
LS7 • OE Titanium Rod & Pin Dia.
Kit
Part #
Bore
K0004X125
4.125
K0004X130
4.130
Comp.
Ht.
Stroke
Rod
1.175
4.000
6.067
Std.
Avg.
0 Deck at Deck
Ht. Wt.
9.242
9.240
Volume
Compression ratio at:
72cc
Pin Part #
(included)
Std. Tension Rings
1.2, 1.2, 3mm
(included)
2.5
12.0
S761
.9252 x 2.250
4127GFX
4137GFX
Valve
Pocket
LS7
• 2618 Alloy: High strength. Will not shatter like hypereutectic or cast pistons.
• Strong, strutted skirt is specially designed to run at as little as .004”
clearance with excellent skirt wear and minimal noise or rock.
• Radiused valve pockets for detonation resistance and increased flow
around valves.
• Anti-detonation grooves help keep the top ring groove free of carbon.
• 1.2mm Nitride Steel Top, 1.2mm Napier 2nd, and Nitride 3mm
oil GFX ring packs included for the best seal, reduced friction,
and superior oil control.
• Pressure groove for enhanced ring seal.
• Features chrome moly pins and Spirolox®.
(Tool steel pins optional.)
• Race Ready Domes don’t require deburring by the engine builder.
• Wiseco ArmorGlideTM skirt coated for lower friction, reduced
noise, and superior life.
• Multi-fit valve pockets for interchangeability of cylinder heads.
• Individual Replacement Pistons for the LS Series are sold Left Hand (driver's side) or, Right Hand (Passenger side).
7
LS Series
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LS Standard Stroke • Nitrous/Turbo 2618 alloy
Kit
Part #
Bore
Comp.
Ht.
Stroke
Std.
Avg.
0 Deck at Deck
Ht. Wt.
Rod
Volume
Pin Part #
(included)
Std. Tension Rings
1.2, 1.2, 3mm
(included)
11.6
S643
.927 x 2.250
9.7
S528
.945 x 2.500
Compression ratio at:
65cc 67cc 68cc 70cc
K447X3903
3.903
535
3905GFX (x8)
K447XS
4.000
-
4000GFX (x8)
K447X05
4.005
K447X3
4.030
K366X05
3.903
1.300
3.622
6.098
6.125
9.209
9.236
9.240
-
12cc
12.5
12.1
12
1.335
3.622
6.098
9.244
9.240
450
4007GFX (x8)
-2.2cc
10.3
10.1
10.0
3905GFX (x8)
3.903
423
3905GFX (x8)
K398X3905
3.905
424
3905GFX (x8)
K398XS
4.000
465
K398X05
4.005
K398X3
4.030
478
4032GFX (x8)
488
4072GFX (x8)
3.622
6.098
6.125
9.213
9.240
9.240
467
-3.2cc
10.6
10.4
10.2
10.0
S643
.927 x 2.250
4007GFX (x8)
4007GFX (x8)
K398X7
4.070
K0005X125
4.125
4127GFX (x8)
K0005X130
4.130
4132GFX (x8)
K0005X155
4.155
K0005X185
4.185
4188GFM (x8)
K0005X200
4.200
4203GFM (x8)
1.300
3.622
6.098
6.125
9.213
9.240
9.240
-1cc
K444X3903
3.903
433
K444XS
4.000
477
K444X05
4.005
K444X3
4.030
1.300
3.622
6.098
6.125
9.209
9.236
9.240
478
11.75
11.2
11.3
11.0
S643
.927 x 2.250
4158GFX (x8)
9.7
9.5
9.4
9.2
S643
.927 x 2.250
4007GFX (x8)
4.070
502
4072GFX (x8)
3.905
445
3905GFX (x8)
K392XS
4.000
448
3.622
9.240
451
4.005
K392X3
4.030
502
4032GFX (x8)
4072GFX (x8)
K392X7
4.070
518
4.125
-
K393X130
4.130
K393X155
4.155
1.304
3.622
6.098
6.125
9.213
9.240
9.240
502
LS1,2,3,6,92
4007GFX (x8)
-25cc
8.6
8.5
8.4
8.1
S643
.927 x 2.250
K392X05
K393X125
LS1,2,3,6,7,92
4032GFX (x8)
K444X7
1.304
LS1,2,3,6,92
4007GFX (x8)
-11cc
K392X3905
9.213
9.240
LS1,2,6
3905GFX (x8)
492
6.098
6.125
LS1,2,6
4032GFX (x8)
K398X3903
1.304
Valve
Pocket
4007GFX (x8)
LS1,2,3,6,92
4127GFX (x8)
-25cc
8.8
8.7
8.6
8.4
S643
.927 x 2.250
4132GFX (x8)
LS1,2,3,6,7,92
4158GFX (x8)
NOTE: LS-1 block has 9.240 deck • 6.0 truck block has 9.230 • LSX block is approximately 9.255. Choose rod length accordingly.
NOTE: Individual Replacement Pistons for the LS Series are sold - Left Hand (driver's side) or, Right Hand (Passenger side).
Wiseco
Flow-dome
Technology
8
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LS Series
PROFESSIONAL
rmance
Pfo
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Autom tons
Pis
Racing
LS • 4” Stroker • Nitrous/Turbo 2618 alloy
Kit
Part #
Bore
Comp.
Ht.
Stroke
Rod
Std.
Avg.
0 Deck at Deck
Ht. Wt.
K448X3903
3.903
-
K448XS
4.000
1.110
4.000
6.098
6.125
9.208
9.235
K448X05
4.005
K448X3
4.030
9.240
-
Volume
Compression ratio at:
65cc 67cc 68cc 70cc
Pin Part #
(included)
Std. Tension Rings
1.2, 1.2, 3mm
(included)
3905GFX (x8)
4007GFX (x8)
5cc
12.9
12.5
12.4
12.0
S643
.927 x 2.250
4007GFX (x8)
K448X7
4.070
496
4072GFX (x8)
3.903
-
3905GFX (x8)
4007GFX (x8)
K464XS
4.000
465
K464X05
4.005
468
K464X3
4.030
K464X65
4.065
-
4067GFX (x8)
K464X7
4.070
-
4072GFX (x8)
K463X125
4.125
468
4127GFX (x8)
K463X130
4.130
-
4132GFX (x8)
K463X135
4.135
K463X155
4.155
K463X185
4.185
1.110
4.000
4.000
6.098
6.125
6.098
6.125
9.208
9.235
9.208
9.235
9.240
9.240
481
477
485
-3.0cc
-2.8cc
11.8
12.6
11.6
12.3
11.4
12.2
11.2
11.9
S643
.927 x 2.250
S643
.927 x 2.250
4007GFX (x8)
4032GFX (x8)
4137GFX (x8)
4158GFX (x8)
-
4188GFM (x8)
K463X200
4.200
-
4203GFM (x8)
K394X3903
3.903
391
3905GFX (x8)
K394X3905
3.905
397
K394XS
4.000
K394X05
4.005
460
4007GFX (x8)
K394X3
4.030
468
4032GFX (x8)
K395X125
4.125
451
1.115
6.098
6.125
9.213
9.240
9.213
9.240
9.240
11.1
10.9
10.8
10.5
S643
.927 x 2.250
4007GFX (x8)
-
4188GFX (x8)
K445X3903
3.903
396
3905GFX (x8)
K445XS
4.000
437
K445X05
4.005
K445X3
4.030
450
4032GFX (x8)
K445X7
4.070
-
4072GFX (x8)
K446X125
4.125
4.130
K446X155
4.155
9.213
9.240
9.240
439
4.000
6.098
6.125
9.208
9.235
9.240
432
4.005
433
K456X3
4.030
4.125
K452X130
4.130
11.1
10.9
1.110
4.000
6.098
6.125
9.208
9.235
4.000
6.098
6.125
9.208
9.235
9.240
435
9.240
446
-
10.2
10.0
9.9
9.7
S643
.927 x 2.250
4007GFX (x8)
10.4
10.2
10.1
10.0
S643
.927 x 2.250
4132GFX (x8)
-20cc
9.7
9.6
9.5
9.3
S643
.927 x 2.250
9.7
S643
.927 x 2.250
4007GFX (x8)
4032GFX (x8)
-20cc
10.2
10.1
10.0
4127GFX (x8)
4132GFX (x8)
4.125
446
4127GFX (x8)
4.130
-
4132GFX (x8)
K443X155
4.155
K443X200
4.200
6.100
9.240
9.240
460
-
LS1,2,3,6,92
LS1,2,3,6,7,92
LS1,2,3,6,92
4072GFX (x8)
K443X125
4.000
LS1,2,3,6,7,92
4127GFX (x8)
-18cc
K443X130
1.140
LS1,2,3,6,92
4007GFX (x8)
-15cc
441
1.110
4132GFX (x8)
4007GFX (x8)
4.000
4.070
11.2
4158GFX (x8)
K456XS
K456X7
11.4
456
K456X05
K452X125
FT -8cc
442
1.110
LS1,2,3,6,7,92
4127GFX (x8)
S643
.927 x 2.250
4.130
6.098
6.125
-
LS1,2,3,6,7,92
3905GFX (x8)
-8cc
4.185
4.000
9.240
456
K395X130
1.110
4.000
6.098
6.125
K395X185
K446X130
1.115
4.000
LS1,2,3,6,92
4032GFX (x8)
K464X3903
1.110
Valve
Pocket
-23cc
10.0
9.8
9.7
9.6
S643
.927 x 2.250
4158GFX (x8)
LS1,2,3,6,7,92
LS1,2,3,6,7,92
4203GFM (x8)
9
LS Series
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(Cont.) LS • 4” Stroker • Nitrous/Turbo 2618 alloy
Kit
Part #
Bore
Comp.
Ht.
K396X3903
3.903
415
K396XS
4.000
429
1.115
Stroke
4.000
Rod
6.098
6.125
Std.
Avg.
0 Deck at Deck
Ht. Wt.
9.213
9.240
9.240
431
Volume
Compression ratio at:
65cc 67cc 68cc 70cc
Pin Part #
(included)
Std. Tension Rings
1.2, 1.2, 3mm
(included)
3905GFX (x8)
4007GFX (x8)
4.005
K396X3
4.030
445
4032GFX (x8)
4072GFX (x8)
K396X7
4.070
460
4.125
430
K397X130
4.130
K397X155
4.155
1.115
4.000
6.098
6.125
9.213
9.240
9.240
-
-32cc
8.8
8.7
8.6
8.5
S643
.927 x 2.250
K396X05
K397X125
Valve
Pocket
4007GFX (x8)
LS1,2,3,6,92
4127GFX (x8)
-32cc
9.1
8.9
8.8
8.7
S643
.927 x 2.250
-
4132GFX (x8)
LS1,2,3,6,7,92
4158GFX (x8)
LS • 4.100/4.125” Stroker • Nitrous/Turbo 2618 alloy
Comp.
Ht.
Bore
K451X3903
3.903
-
K451XS
4.000
-
K451X05
4.005
K451X3
4.030
470
4032GFX (x8)
1.050
Stroke
4.100
4.125
Rod
6.125
Std.
Avg.
0 Deck at Deck
Ht. Wt.
9.225
9.237
9.240
-
Volume
Compression ratio at:
65cc 67cc 68cc 70cc
Pin Part #
(included)
Std. Tension Rings
1.2, 1.2, 3mm
(included)
Kit
Part #
3905GFX (x8)
4007GFX (x8)
3cc
12.8
12.5
12.3
12.0
S643
.927 x 2.250
4007GFX (x8)
K451X7
4.070
472
4072GFX (x8)
K462X125
4.125
-
4127GFX (x8)
K462X130
4.130
K462X135
4.135
K462X155
4.155
1.050
4.100
4.125
6.125
9.225
9.240
478
-2.8cc
13.0
12.7
12.5
12.2
4137GFX (x8)
4158GFX (x8)
K462X185
4.185
480
4188GFM (x8)
4.200
-
4203GFM (x8)
K450X3903
3.903
381
3905GFX (x8)
K450XS
4.000
423
K450X3
4.030
4.100
4.125
6.125
9.225
9.237
9.240
429
-11cc
11
10.8
10.7
10.5
S643
.927 x 2.250
4007GFX (x8)
4032GFX (x8)
K450X7
4.070
430
4072GFX (x8)
K454X3903
3.903
-
3905GFX (x8)
K454XS
4.000
K454X05
4.005
-
K454X3
4.030
-
4032GFX (x8)
K454X7
4.070
431
4072GFX (x8)
1.050
4.100
4.125
6.125
9.225
9.237
9.240
-
LS1,2,3,6,92
4132GFX (x8)
S643
.927 x 2.250
K462X200
1.050
Valve
Pocket
LS1,2,3,6,7,92
LS1,2,3,6,92
4007GFX (x8)
-14cc
10.7
10.5
10.3
10.0
S643
.927 x 2.250
4007GFX (x8)
K455X125
4.125
K455X130
4.130
K455X155
4.155
4158GFX (x8)
K449X3903
3.903
3905GFX (x8)
K449XS
4.000
K449X05
4.005
K449X3
4.030
4032GFX (x8)
K449X7
4.070
4072GFX (x8)
LS1,2,3,6,92
4127GFX (x8)
1.050
4.100
4.125
6.125
9.225
9.237
9.240
-22cc
10.4
10.2
10.1
10.0
S643
.927 x 2.250
4132GFX (x8)
LS1,2,3,6,7,92
4007GFX (x8)
1.050
4.100
4.125
6.125
9.225
9.237
9.240
414
-30cc
9.2
9.1
9.0
8.8
S643
.927 x 2.250
4007GFX (x8)
LS1,2,3,6,92
NOTE: LS-1 block has 9.240 deck • 6.0 truck block has 9.230 • LSX block is approximately 9.255. Choose rod length accordingly.
NOTE: Individual Replacement Pistons for the LS Series are sold - Left Hand (driver's side) or, Right Hand (Passenger side).
10
See page 64 for a listing of K1 Technologies Rods & Crankshafts
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otive
Autom tons
Pis
Racing
230 350 XLS Flat Top
PROFESSIONAL
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350 XLS • 2bbl Xtra Light Series • 1/16 Rings • .250/.170 Pockets
Kit
Part #
Bore
K167A3
4.030
Comp.
Ht.
Stroke
Rod
Std.
Avg.
0 Deck at Deck
Ht. Wt.
4.040
K167A6
4.060
385
K166A3
4.030
336
4.040
K166A6
4.060
Compression ratio at:
58cc 62cc 67cc 76cc
Pin Part #
(Included)
375
K167A4
K166A4
Volume
1.550
1.250
3.480
3.480
5.700
6.000
8.990
8.990
9.025
9.025
379
347
351
Std. Tension Rings
1/16, 1/16, 3/16
(sold separately)
Skirt
Type
W100F8-4030-5
-3.2cc
11.3
10.8
10.1
9.2
S424
.927 x 2.500
W100F8-4040-5
Slipper
W100F8-4060-5
W100F8-4030-5
-3.2cc
11.3
10.8
10.1
9.2
S424
.927 x 2.500
W100F8-4040-5
Slipper
W100F8-4060-5
• Radiused Valve Pocket.
• Skirt design allows for as little as .004"
clearance with excellent wear properties.
• Anti-detonation Grooves help keep the top
ring groove free of carbon.
• Pressure Groove for enhanced ring seal.
• The original Xtra Lite Series sets new
standards for light weight, quicker
revving, and reduced loads on the
bottom end.
• A specially developed skirt shape
is easy on cylinder walls and makes
excellent power.
• Features Chrome Moly Pins and Spirolox®.
11
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230 350 XLS Pro GFX
350 XLS • 4bbl Xtra Light Series • 1.2mm GFX Ring Packs • .305/.210 Pockets • Gas Ports
Kit
Part #
Bore
Comp.
Ht.
K412X2
4.020
370
K412X3
4.030
374
Rod
4032GFX
4.060
394
4062GFX
K413X2
4.020
335
4022GFX
K413X3
4.030
347
350
-4.6cc
11.1
10.6
10.0
9.0
S424
.927 x 2.500
K412X6
9.025
4042GFX
Slipper
4032GFX
-4.6cc
11.1
10.6
10.0
9.0
S424
.92 7 x 2.500
4042GFX
K413X5
4.050
354
4052GFX
K413X6
4.060
358
4062GFX
K499X2
4.020
K499X3
4.030
Slipper
4022GFX
4032GFX
1.125
3.480
3.750
6.125
6.000
8.990
9.000
9.025
10.0
10.7
9.0
9.7
S424
.927 x 2.500
K499X5
4.050
4052GFX
K499X6
4.060
4062GFX
• Skirt design allows for as little as .004"
clearance with excellent wear properties.
• Anti-detonation Grooves help keep the top
ring groove free of carbon.
• Pressure Groove for enhanced ring seal.
• Features Chrome Moly Pins and Spirolox®.
• ArmorGlide™ Skirt Coating.
-4.6cc
10.6
11.3
4.040
• Radiused Valve Pocket.
329
11.1
11.9
K499X4
12
Skirt
Type
4022GFX
4052GFX
8.990
380
Std. Tension Rings
1.2, 1.2, 3mm
(NOW included)
383
6.000
9.025
Pin Part #
(included)
4.050
3.480
8.990
Compression ratio at:
58cc 62cc 67cc 76cc
4.040
1.250
5.700
Volume
K412X5
4.040
3.480
Std.
Avg.
0 Deck at Deck
Ht. Wt.
K412X4
K413X4
1.550
Stroke
4042GFX
Slipper
• Taking the XLS Series a step further,
the GFX ring package and gas
ports reduce friction for noticeable
increases in power.
• Extra deep valve pockets and a
thicker deck allow for higher horsepower, bigger cams, and more
radically milled heads.
• Skirt coated for lower friction,
reduced noise, and superior life.
See page 64 for a listing of K1 Technologies Rods & Crankshafts
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230 350 XLS Pro .043
350 XLS Pro • 4bbl Xtra Light Series • Pro Series .043 Rings • Gas Ports • .305/.210 Pockets
Kit
Part #
Bore
K414B3
4.030
Comp.
Ht.
Stroke
Rod
Std.
Avg.
0 Deck at Deck
Ht. Wt.
4.040
K414B6
4.060
406
K415B3
4.030
345
4.040
K415B6
4.060
K416B3
4.030
K416B4
4.040
K416B6
4.060
Compression ratio at:
58cc 62cc 67cc 76cc
Pin Part #
(included)
394
K414B4
K415B4
Volume
1.550
1.250
3.480
3.480
5.700
6.000
8.990
8.990
9.025
9.025
396
356
-4.6cc
11.1
10.6
10.0
9.0
1.125
8.990
9.000
9.025
334
W70008-4040-5
Slipper
W70008-4060-5
W70008-4030-5
-4.6cc
11.1
10.6
10.0
9.0
S424
.927 x 2.500
W70008-4040-5
Slipper
W70008-4060-5
329
6.125
6.000
Skirt
Type
W70008-4030-5
S424
.927 x 2.500
360
3.480
3.750
Low Tension Rings
.043bc, .043, 3mm
(sold separately)
W70008-4030-5
-4.6cc
11.1
11.9
10.6
11.3
10
10.7
9
9.7
S424
.927 x 2.500
343
W70008-4040-5
Slipper
W70008-4060-5
• Radiused Valve Pocket.
• The Pro Series is the ultimate slipper
skirt flat top piston. Designed for ultra
low drag rings with gas ports, and
gas equalizer groove.
• Deeper valve pockets and thicker
deck allowing for radical cams and
head milling.
• Skirt design allows for as little as .004"
clearance with excellent wear properties.
• Anti-detonation Grooves help keep the top
ring groove free of carbon.
• Pressure Groove for enhanced ring seal.
• Features Chrome Moly Pins and Spirolox®.
Pro Lite II • Flat Top
350 Pro Lite II Series • Strutted High Strength • Pro Series .043 Rings • Lateral Gas Ports
Kit
Part #
Bore
K409B3
4.030
K409B4
4.040
K409B6
4.060
Comp.
Ht.
Stroke
Rod
Std.
Avg.
0 Deck at Deck
Ht. Wt.
Volume
Compression ratio at:
58cc 62cc 67cc 76cc
Pin Part #
(Included)
378
1.250
3.480
6.000
8.990
9.025
• Radiused Valve Pocket.
• Anti-detonation Grooves help keep the top
ring groove free of carbon.
• Pressure Groove for enhanced ring seal.
• Features Chrome Moly Pins and Spirolox®.
384
391
Low Tension Rings
.043bc, .043, 3mm
(sold separately)
Skirt
Type
W70008-4030-5
-5.4cc
11.0
10.5
9.9
9.0
S424
.927 x 2.500
W70008-4040-5
Strutted
W70008-4060-5
• The Pro Lite II’s deliver the same
reliability as the original, with extra
horsepower coming from low drag
.043 Pro Series rings, gas ports, and
gas equalizer groove.
• A reduction in weight makes for a
quicker revving engine and reduced
stress.
13
PROFESSIONAL
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NEW! Max 23 Series • Flat Top
350 Strutted High Strength • GFX Rings • Lateral Gas Ports • .320/.250 Pockets
Kit
Part #
Bore
K0003X2
4.020
K0003X3
4.030
Comp.
Ht.
Stroke
Rod
Std.
Avg.
0 Deck at Deck
Ht. Wt.
Volume
Compression ratio at:
58cc 62cc 67cc 76cc
Pin Part #
(included)
Low Tension Rings
1.2, 1.2, 3mm
(included)
4022GFX
4032GFX
1.550
3.480
5.700
8.990
9.025
-5.7cc
4.040
K0003X5
4.050
4052GFX
K0003X6
4.060
4062GFX
K0002X2
4.020
399
K0002X3
4.030
405
1.250
3.480
6.000
8.990
9.025
407
10.8
10.3
10.1
8.9
S643
.927 x 2.250
K0003X4
4042GFX
4032GFX
-5.7cc
10.8
10.3
10.1
8.9
S643
.927 x 2.250
4.040
K0002X5
4.050
410
4052GFX
K0002X6
4.060
415
4062GFX
K0001X2
4.020
K0001X3
4.030
4042GFX
Strutted
4022GFX
4032GFX
1.125
3.480
3.750
6.125
6.000
8.990
9.000
10.1
10.4
8.9
9.5
S643
.927 x 2.250
4.040
4.050
4052GFX
K0001X6
4.060
4062GFX
• Wiseco ArmorGlideTM skirt coating
• Nitride Steel Top Ring.
• Napier 2nd Ring.
• 150 Pressure Seal Groove for reduced oil
consumption.
-5.7cc
10.3
11.0
K0001X5
• Lateral Gas Ports.
9.025
10.8
11.5
K0001X4
14
Strutted
4022GFX
K0002X4
• 2618 Alloy.
Skirt
Type
4042GFX
Strutted
• The Max 23 Series is the first to utilize
2.250 pin forging technology. The
narrow spacing between the bosses
increases bearing area and reduces
unsupported crown area. This
reduces ring groove distortion and
adds the strength needed to hold up
to the power created by the best 230
heads.
See page 64 for a listing of K1 Technologies Rods & Crankshafts
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230 350 Hollow Dome
PROFESSIONAL
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Autom tons
Pis
Racing
350/360/383 • Sprint Car • High Strength (NOTE: K388A3 will fit ASCS Brodix spec heads)
Kit
Part #
Bore
K384A3
4.030
K384A4
4.040
K388A3
4.030
K098A3
4.030
K098A4
4.040
Comp.
Ht.
Stroke
Rod
Std.
Avg.
0 Deck at Deck
Ht. Wt.
1.250
3.480
6.000
8.990
9.025
462
12.3cc
14.2
13.3
12.3
11.0
S424
.927 x 2.500
1.213
3.562
3.875
6.000
5.850
8.994
9.000
9.025
457
8.9cc
13.7
14.8
13.0
14.0
12.0
13.0
10.7
11.6
S424
.927 x 2.500
1.120
3.480
3.750
6.125
6.000
8.985
8.995
9.025
475
12.3cc
14.2
15.2
13.3
14.3
12.3
13.2
11.0
11.7
S451
.927 x 2.950
Volume
Compression ratio at:
58cc 62cc 67cc 76cc
Pin Part #
(included)
Std. Tension Rings
1/16, 1/16, 3/16
(sold separately)
W100F8-4030-5
W100F8-4040-5
W100F8-4030-5
Skirt
Type
Full
Round
Full
Round
W100F8-4030-5
Slipper
W100F8-4040-5
• Radiused Valve Pocket.
• Skirt design allows for as little as .004"
clearance with excellent wear properties.
• Anti-detonation Grooves help keep the top
ring groove free of carbon.
• Pressure Groove for enhanced ring seal.
• The 360 Sprint Series offers a
contoured dome for efficient
combustion and a 2618 alloy forging.
• Weight has been reduced without
sacrificing strength.
• Many advanced design features.
• Features Chrome Moly Pins and Spirolox®.
15
P
180 400 Dome
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400 Stroker • Solid Dome • 18 degree
Kit
Part #
Bore
Comp.
Ht.
Stroke
Rod
K170A3
4.155
1.120
3.750
6.000
8.995
9.025
461
4.0cc
Solid
17.4
15.4
14.9
K171AS
4.125
1.000
4.000
6.000
9.000
9.025
436
4.0cc
Solid
18.4
16.3
15.8
K171A3
Std.
Avg.
0 Deck at Deck
Ht. Wt.
Volume
Pin Part #
(included)
Std. Tension Rings
1/16, 1/16, 3/16
(sold separately)
Skirt
Type
12.7
S451
.927 x 2.950
W100F8-4155-5
Slipper
13.5
S451
.927 x 2.950
Compression ratio at:
45cc 52cc 54cc 65cc
W100F8-4125-5
4.155
Slipper
W100F8-4155-5
• Radiused Valve Pockets.
• This 18 degree piston features a
strong 2618 alloy forging. Precision
CNC machining produces the flattest
ring grooves, and the dome is
specifically designed to enhance the
combustion process.
• Anti-detonation Grooves help keep the top
ring groove free of carbon.
• Pressure Groove for enhanced ring seal.
• Features Chrome Moly Pins and Spirolox®.
230 400 Dome
400 Dome • High Strength Contoured • Nitrous Compatible
Pin Part #
(included)
Std. Tension Rings
1/16, 1/16, 3/16
(sold separately)
Skirt
Type
12.7
S451
.927 x 2.950
W100F8-4125-5
Full
Round
12.6
13.4
11.2
12.0
S451
.927 x 2.950
W100F8-4155-5
Full
Round
14.4
15.3
13.4
14.3
12.0
12.7
S451
.927 x 2.950
W100F8-4155-5
Full
Round
15.4
16.3
14.5
15.3
13.5
14.3
12.0
12.7
S451
.927 x 2.950
W100F8-4155-5
Slipper
10.0cc
Hollow
14.6
14.9
15.9
13.8
14.0
14.9
12.4
13.0
13.8
11.4
11.6
12.3
S451
.927 x 2.950
W100F8-4155-5
Full
Round
472
10.0cc
Solid
14.6
14.9
15.9
13.8
14.0
14.9
12.4
13.0
13.8
11.4
11.6
12.3
S451
.927 x 2.950
W100F8-4155-5
Slipper
9.025
442
16.3
15.3
14.3
12.7
Full
Round
458
16.3
15.3
14.3
12.7
S451
.927 x 2.950
S451
.927 x 2.950
W100F8-4155-5
9.025
10.0cc
Hollow
10.0cc
Solid
W100F8-4155-5
Slipper
Kit
Part #
Bore
Comp.
Ht.
Stroke
Rod
Std.
Avg.
0 Deck at Deck
Ht. Wt.
K408AS
4.125
1.420
3.750
5.700
8.995
9.025
521
10.0cc
Hollow
15.4
14.5
13.5
K407A3
4.155
1.250
3.480
3.750
6.000
5.850
8.990
8.975
9.025
491
10.0cc
Hollow
14.3
15.4
13.5
14.4
K406A3
4.155
1.120
3.750
4.000
6.000
5.850
8.995
8.970
9.025
461
10.0cc
Hollow
15.4
16.3
K051A3
4.155
1.120
3.750
4.000
6.000
5.850
8.995
8.970
9.025
489
10.0cc
Solid
K405A3
4.155
1.060
3.562
3.625
3.875
6.125
6.125
6.000
8.966
8.997
8.997
9.025
459
K071A3
4.155
1.060
3.562
3.625
3.875
6.125
6.125
6.000
8.966
8.997
8.997
9.025
K404A3
4.155
1.000
4.000
6.000
9.000
K056A3
4.155
1.000
4.000
6.000
9.000
Volume
Compression ratio at:
58cc 62cc 67cc 76cc
• Radiused Valve Pocket.
• Skirt design allows for .004"+ clearance with
excellent wear properties.
• Anti-detonation Grooves help keep the top ring
groove free of carbon.
• Pressure Groove for enhanced ring seal.
• The newly designed 400 series parts
are the best available. Contoured
domes and other special features,
along with a dedicated forging,
ensure more than adequate thickness
for the highest horsepower.
• Features Chrome Moly Pins and Spirolox®.
16
See page 64 for a listing of K1 Technologies Rods & Crankshafts
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Big Block Dome
PROFESSIONAL
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454/496 Dome • Light Weight Drag • Open Chamber (will not fit Dart Pro 1) • 1/16 Rings
Kit
Part #
Bore
Comp.
Ht.
Stroke
Rod
K320A6
4.310
1.520
3.760
4.250
4.250
6.385
6.135
6.535
9.785
9.780
10.180
9.800
9.800
10.200
K323A6
4.310
1.395
4.000
4.500
4.500
6.385
6.135
6.535
9.780
9.780
10.180
K238A3
4.280
K238A6
4.310
1.270
4.250
4.250
6.385
6.800
K241A6
4.310
1.120
4.250
4.375
4.500
4.750
6.535
6.480
6.800
6.700
K241A100
4.350
Std.
Avg.
0 Deck at Deck
Ht. Wt.
Pin Part #
(included)
Std. Tension Rings
1/16, 1/16, 3/16
(sold separately)
Skirt
Type
11.6
13.0
13.0
S460
.990 x 2.930
W100F8-4310-5
Full
Round
12.6
14.0
14.0
12.0
13.4
13.4
S460
.990 x 2.930
W100F8-4310-5
Full
Round
14.1
13.3
12.7
S460
.990 x 2.930
14.1
15.0
15.8
13.3
14.2
15.0
12.7
13.6
14.3
S460
.990 x 2.930
Volume
Compression ratio at:
110cc 114cc 119cc 123cc
634
48.4cc
Hollow
13.5
15.1
15.1
12.9
14.4
14.4
12.1
13.6
13.6
9.800
9.800
10.200
591
48.4cc
Hollow
14.6
15.6
15.6
13.3
14.9
14.9
9.780
10.195
9.800
10.200
550
48.4cc
Hollow
14.8
9.780
9.787
10.170
10.195
9.800
9.800
10.200
10.200
525
48.4cc
Hollow
14.8
15.8
16.7
W100F8-4280-5
W100F8-4310-5
W100F8-4310-5
W100F8-4350-5
Full
Round
Full
Round
502 & Stroker • Dome • Light Weight Drag • Open Chamber • 1/16 Rings
Kit
Part #
Bore
K316AS
4.500
K316A3
4.530
K316A100
4.600
K240AS
4.500
K240A6
4.560
K240A100
4.600
K425A3
4.530
Comp.
Ht.
Stroke
Rod
1.395
4.000
4.500
4.500
6.385
6.135
6.535
Std.
Avg.
0 Deck at Deck
Ht. Wt.
Volume
Compression ratio at:
110cc 114cc 119cc 123cc
45.8cc
Hollow
14.7
16.4
16.4
Pin Part #
(included)
650
9.780
9.780
10.180
9.800
9.800
10.200
660
13.2
14.8
14.8
12.7
14.1
14.1
S460
.990 x 2.930
1.270
9.780
10.195
9.800
10.200
618
15.0
14.2
13.5
13.0
S460
.990 x 2.930
9.800
10.200
10.200
15.0
15.7
16.6
14.2
15.0
15.8
13.5
14.2
15.0
13.0
13.7
14.4
S460
.990 x 2.930
4.560
K425A100
4.600
-
W100L8-4600-5
K243AS
4.500
571
W100F8-4500-5
K243A3
4.530
4.560
K243A100
4.600
K243A125
4.625
1.120
4.250
4.375
4.500
4.750
6.535
6.480
6.800
6.700
9.780
9.787
10.170
10.195
9.800
9.800
10.200
10.200
• Radiused Valve Pocket.
• Anti-detonation Grooves help keep the top
ring groove free of carbon.
• Pressure Groove for enhanced ring seal.
• Features Chrome Moly Pins and Spirolox®.
614
581
589
Full
Round
W100F8-4530-5
42.4cc
Hollow
K425A6
K243A6
1.245
9.780
10.170
10.195
W100H8-4560-5
W100L8-4600-5
6.535
6.800
6.700
Full
Round
W100F8-4500-5
42.4cc
Hollow
641
4.250
4.250
4.500
W100F8-4530-5
W100L8-4600-5
6.385
6.800
Skirt
Type
W100F8-4500-5
14.0
15.6
15.6
686
4.250
4.250
Std. Tension Rings
1/16, 1/16, 3/16
(sold separately)
W100H8-4560-5
Full
Round
W100F8-4530-5
42.4cc
Hollow
15.0
15.7
16.6
14.2
15.0
15.8
13.5
14.2
15.0
13.0
13.7
14.4
S460
.990 x 2.930
W100H8-4560-5
595
W100L8-4600-5
602
W100F8-4625-5
Full
Round
• Designed to be the lightest on the
market, the generous Valve Pockets
are compatible with all but the most
milled cylinder heads. Full round
2618 forgings and a newly designed
skirt shape keep piston rock to a
minimum and ring seal at a maximum.
Precision tolerances make these
pistons unbeatable.
17
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Big Block Dome
540 & Stroker • 38cc Dome • Nitrous • Open Chamber • Pro Series .043 Top, 1/16, 3/16 Rings
Kit
Part #
Bore
K426BS
4.500
K426B3
4.530
Comp.
Ht.
Stroke
Rod
Std.
Avg.
0 Deck at Deck
Ht. Wt.
Volume
Compression ratio at:
110cc 114cc 119cc 123cc
Pin Part #
(included)
635
9.780
10.195
9.800
10.200
14.5
14.5
13.9
13.9
13.2
13.2
12.7
12.7
S462
.990 x 2.930
4.560
K426B100
4.600
670
W860L8-4600-5
K426B110
4.610
676
W860H8-4610-5
K427B6
4.560
4.600
K427B110
4.610
1.120
4.250
4.375
4.500
4.750
6.535
6.480
6.800
6.700
9.780
9.787
10.170
10.195
9.800
9.800
10.200
10.200
• Radiused Valve Pocket.
• Anti-detonation Grooves help keep the top
ring groove free of carbon.
• Pressure Groove for enhanced ring seal.
• Features Chrome Moly Pins and Spirolox®.
18
649
W860F8-4530-5
38.0cc
Hollow
K426B6
K427B100
1.270
6.385
6.800
605
623
633
Skirt
Type
W860F8-4500-5
640
4.250
4.250
Std. Tension Rings
.043bc, 1/16, 3/16
(sold separately)
38.0cc
Hollow
14.5
14.9
15.3
16.0
13.9
14.3
14.6
15.4
13.2
13.5
14.0
14.6
12.7
13.0
13.4
14.1
W860H8-4560-5
Full
Round
W860H8-4560-5
S462
.990 x 2.930
W860L8-4600-5
Full
Round
W860H8-4610-5
• An .043" Pro Top Ring adds top land
strength. Generous Valve Pockets
are compatible with all but the most
seriously milled cylinder heads. Full
round 2618 forgings and a newly
designed skirt shape keep piston
rock to a minimum and ring seal at
a max. “On-the-shelf” availability
means they will be available to keep
you going during the racing season.
See page 64 for a listing of K1 Technologies Rods & Crankshafts
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Big Block • Quick 16 Series
Pro Series • Gas Ported • .043 Top, 1/16", 3/16 Rings
Bore
K481B6
4.560
K481B100
4.600
K481B110
4.610
K481B125
4.625
685
W860F8-4625-5
K479B6
4.560
628
W860H8-4560-5
K479B100
4.600
K479B110
4.610
K479B125
4.625
K478B6
4.560
K478B100
4.600
K478B110
4.610
K478B125
4.625
Comp.
Ht.
Stroke
Rod
Std.
Avg.
0 Deck at Deck
Ht. Wt.
Compression ratio at:
Volume 107cc
114cc 119cc 123cc
Pin Part #
(included)
Std. Tension Rings
.043bc. 1/16, 3/16
(sold separately)
Kit
Part #
652
1.270
1.215
4.250
4.375
6.385
6.800
9.780
10.195
6.385
9.787
9.800
10.200
9.800
678
682
646
649
W860H8-4560-5
45cc
Hollow
40cc
Hollow
15.9
15.9
14.7
14.7
14.0
14.0
13.4
13.4
S462
.990 x 2.930
S462
.990 x 2.930
654
1.120
6.535
6.480
6.800
6.700
9.780
9.787
10.170
10.195
9.800
9.800
10.200
10.200
636
642
W860L8-4600-5
W860H8-4610-5
W860L8-4600-5
W860H8-4610-5
Strutted
Strutted
W860F8-4625-5
615
4.250
4.375
4.500
4.750
Skirt Type
W860H8-4560-5
42cc
Hollow
15.8
16.3
16.7
17.6
14.6
15.0
15.4
16.2
13.9
14.2
14.6
15.4
13.3
13.7
14.0
14.6
S462
.990 x 2.930
645
W860L8-4600-5
W860H8-4610-5
Strutted
W860F8-4625-5
Pro Series • Gas Ported • .043 Top, .043 2nd D-Wall, 3mm
Kit
Part #
Bore
K0009B6
4.560
K0009B100
4.600
K0009B110
4.610
NEW
K0009B125
4.625
K477B6
4.560
K477B100
4.600
K477B110
4.610
K477B125
4.625
Comp.
Ht.
Stroke
Rod
Std.
Avg.
0 Deck at Deck
Ht. Wt.
Compression ratio at:
Volume 107cc
114cc 119cc 123cc
Pin Part #
(included)
Std. Tension Rings
.043bc, .043d, 3mm
(sold separately)
Skirt Type
W77008-4560-5
1.155
4.500
6.385
9.790
45cc
Hollow
9.800
17.5
16.0
15.5
14.9
S462
.990 x 2.930
W77008-4600-5
W77008-4610-5
Strutted
W77008-4625-5
607
1.060
4.375
6.535
9.782
9.800
630
636
W77008-4560-5
40cc
Hollow
15.9
14.7
14.0
13.4
S462
.990 x 2.930
642
W77008-4600-5
W77008-4610-5
Strutted
W77008-4625-5
Pro Series • Gas Ported • .043 Top, .043 2nd D-Wall, 3mm
Kit
Part #
Bore
Comp.
Ht.
Stroke
Rod
Std.
Avg.
0 Deck at Deck
Ht. Wt.
Compression ratio at:
Volume 107cc
114cc 119cc 123cc
Pin Part #
(included)
NEW Severe Duty version of K478 (Power Adder)
K0006B6
4.560
K0006B100
4.600
K0006B110
4.610
K0006B125
4.625
Std. Tension Rings
.043bc, .043d, 3mm
(sold separately)
Skirt Type
W77008-4560-5
1.120
4.250
4.375
4.500
4.750
6.535
6.480
6.800
6.700
9.780
9.787
10.170
10.195
9.800
9.800
10.200
10.200
42cc
Hollow
15.8
16.3
16.7
17.6
14.6
15.0
15.4
16.2
13.9
14.2
14.6
15.4
13.3
13.7
14.0
14.6
S726
.990 x 2.930
W77008-4600-5
W77008-4610-5
Strutted
W77008-4625-5
19
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Big Block • Quick 8 Series
120 -140 Solid Dome • Nitrous • Gas Ported • Skirt Coated • .220 intake/.135 exh. pocket depth
Kit
Part #
Bore
K490B6
4.560
K490B100
4.600
K490B110
4.610
K490B125
4.625
K491B6
4.560
K491B100
4.600
K491B110
4.610
K491B125
4.625
K493B6
Comp.
Ht.
Stroke
Rod
1.215
4.375
6.385
1.155
4.560
4.500
4.250
6.385
6.535
Std.
Ring
0 Deck at Deck
Ht. Lands Volume
9.788
9.790
9.780
9.800
9.800
Top:
.335
4.600
4.375
6.480
9.787
4.610
4.500
6.800
10.170
Top:
.305
W77008-4560-5
4.625
K492B6
4.560
K492B100
4.600
K492B110
4.610
K492B125
4.625
4.750
1.060
4.375
6.700
6.535
10.195
9.787
18.3 17.8
17.0 14.6
4cc
solid D dome dome dome dome
S462
.990 x 2.930
-6cc
2nd:
16.2 15.8 15.1 13.3
.182 cut to FT flat top flat top flat top flat top
17.3 16.9 16.0
dome dome dome
15.3 15.0 14.3
flat top flat top flat top
13.9
dome
12.6
flat top
4cc
solid
dome,
17.8 17.4 16.5
dome dome dome
15.7 15.4 14.7
flat top flat top flat top
14.3
dome
13.0
flat top
-6cc
cut to
flat top
17.0
18.3 17.8
dome dome dome
16.2 15.8 15.1
flat top flat top flat top
14.6
dome
13.3
flat top
19.3 18.8 17.8
dome dome dome
17.0 16.6 15.9
flat top flat top flat top
15.4
dome
14.0
flat top
9.800
9.800
10.200
2nd:
.167
K493B125
18.3 17.8
17.0 14.6
6cc
solid D dome dome dome dome
10.200
9.800
Std. Tension Rings
.043bc, .043d, 3mm
(sold separately)
W77008-4560-5
W77008-4600-5
1.120
K493B110
Pin Part #
(included)
S462
.990 x 2.930
-6cc
2nd:
15.7 15.4 14.7 13.0
.212 cut to FT flat top flat top flat top flat top
Top:
.285
K493B100
Compression ratio at:
61cc 63cc 67cc 80cc
Top:
.257
18.3 17.8
17.0 14.6
6cc
solid D dome dome dome dome
-6cc
2nd:
15.7 15.4 14.7 13.0
.140 cut to FT flat top flat top flat top flat top
W77008-4610-5
Skirt
Type
Strutted
W77008-4625-5
W77008-4600-5
W77008-4610-5
Strutted
W77008-4625-5
W77008-4560-5
W77008-4600-5
S462
.990 x 2.930
Strutted
W77008-4610-5
W77008-4625-5
W77008-4560-5
S462
.990 x 2.930
W77008-4600-5
W77008-4610-5
Strutted
W77008-4625-5
Wiseco Quick 16 pistons are designed to fit conventional heads from today's leading manufacturers.
Wiseco Quick 8 pistons are designed to allow for additional flycutting as necessary. Domes that can be cut to a
lower rise to tune volume for different combustion chamber volumes. Every 2.76 grams off dome/valve pockets = 1cc
volume.
• New skirt coatings use Wiseco’s proprietary ArmorGlide™ material (Superior to graphite or Teflon based formulas).
Benefits include - longer engine life, increased horsepower, noise reduction, and much tighter dimensional
tolerances than typical spray-on coatings. Controlled curing processes guarantee the best possible results.
• Designed with input from today's leading edge engine builders and Pro Stock technology to fill the demands of
today's big valve, big cubic inch Sportsman Series engines.
• Configured to maintain proper flame travel and desired compression ratios needed for today's extreme horsepower
engines and exotic fuels. Generous valve pockets for all popular heads and high lift cams
• With the ability to produce dedicated forgings in house, Wiseco is able to design pistons with the lightweight
extreme durability that is expected in a modern day race engine. Fortified pin bosses, maximized ring lands,
dedicated skirt shape designs to minimize piston rock, and reinforced deck and pockets, all add up to handle the
shock loads of modern day power adders
• Vertical Gas Ports located away from valve pockets.
• Oil reservoir below oil drainbacks allow the lower rail to act more efficiently for optimal oil control.
• Ring packages incorporated to handle the highest cylinder pressures and temperatures.
• In stock availability of kits and singles keeps you racing all season.
20
See page 64 for a listing of K1 Technologies Rods & Crankshafts
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Autom tons
Pis
Racing
Big Block • Quick 8 Series
PROFESSIONAL
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180 Solid Dome • Nat. Asperated or Nitrous • Gas Ported • Skirt Coated • .290 intake depth
Kit
Part #
Bore
K498B6
4.560
K498B100
4.600
K498B110
4.610
K498B125
4.625
K497B6
4.560
K497B100
4.600
K497B110
4.610
K497B125
4.625
K496B6
Comp.
Ht.
1.215
1.155
4.560
Stroke
4.375
4.500
4.250
Rod
6.385
6.385
6.535
Std.
Ring
0 Deck at Deck
Ht. Land Volume
9.788
9.790
9.780
9.800
9.800
Top:
.335
4.600
4.375
6.480
9.787
Top:
.305
4.610
4.500
6.800
10.170
9.800
9.800
10.200
2nd:
.167
K496B125
4.625
K495B6
4.560
K495B100
4.600
K495B110
4.610
K495B125
4.625
4.750
1.060
4.375
6.700
6.535
10.195
9.787
10.200
9.800
Pin Part #
(included)
S462
.990 x 2.930
Top:
.257
14.9
dome
12.2
flat top
15.4
dome
12.6
flat top
15.8
dome
13.0
flat top
16.6
dome
13.6
flat top
14.3
dome
11.8
flat top
14.7
dome
12.2
flat top
15.1
dome
12.6
flat top
15.9
dome
13.1
flat top
2nd:
-4cc
.140 cut to FT 14.3 12.9 12.5 12.2
flat top flat top flat top flat top
W77008-4600-5
W77008-4610-5
Strutted
W77008-4560-5
14.0
dome
11.6
flat top
14.5
dome
12.0
flat top
S462
14.8 .990 x 2.930
dome
12.4
flat top
15.5
dome
12.9
flat top
18.0 15.7 15.0 14.7
15.6cc dome dome dome dome
solid D
Skirt
Type
W77008-4625-5
18.0 15.8 15.1 14.8
15.6cc dome dome dome dome
solid D
17.0
dome
13.6
flat top
17.5
15.6cc dome
solid
14.0
dome, flat top
16.0
-4cc
cut to dome
flat top 14.6
flat top
19.0
dome
15.0
flat top
Std. Tension Rings
.043bc, .043d, 3mm
(sold separately)
W77008-4560-5
S462
.990 x 2.930
2nd:
-4cc
14.6
13.0
12.6
12.4
.182 cut to FT
flat top flat top flat top flat top
1.120
K496B110
18.0 15.7 15.0 14.7
15.6cc dome dome dome dome
solid D
2nd:
-4cc
.212 cut to FT 14.3 12.9 12.5 12.2
flat top flat top flat top flat top
Top:
.285
K496B100
Compression ratio at:
74cc 85cc 89cc 91cc
W77008-4600-5
W77008-4610-5
Strutted
W77008-4625-5
W77008-4560-5
W77008-4600-5
Strutted
W77008-4610-5
W77008-4625-5
W77008-4560-5
S462
.990 x 2.930
W77008-4600-5
W77008-4610-5
Strutted
W77008-4625-5
21