honda crf 250

Bolt
On
suitable for:
HONDA CRF 250
2010-2011
CYLINDER, PISTON, GASKET KIT
Ø 76,8 mm / 249,2 cc
P400210100032
ATHENA presents its new Kit for the HONDA CRF 250, tested on tracks and on dynamometric bench. ATHENA produces this cylinder
in a BOLT-ON version, in other words it can be installed on the engine without any crankcase modifications. ATHENA have matched
the cylinder with a forged piston which is lighter than the OE, we intended to reach the best performances ever. The gaskets have
been developed using last generation technologies; in particular the multilayers head gasket provides a new system of reliefs that
guarantees a perfect seal even at high temperatures.
- S4F07680007A
- S4F07680007B
- P400210160025
Forged piston Ø 76,75;
Forged piston Ø 76,76;
Gasket kit;
OEM
TECHNICA LDATA
SPARE
PARTS
TECHNICAL
CHARACTERISTICS
P/N:
CYLINDER BORE
76.8 mm
76.8 mm
STROKE
53.8 mm
53.8 mm
DISPLACEMENT
249.2 cc
249 cc
13.2:1
13.21:1
25.9 kW / 34.7 HP / 10700 rpm
25.65 kW / 34.4 HP / 10990 rpm
COMPRESSION RATIO
WHEEL POWER
ATHENA Ø 78
OEM
STRENGHT POINTS
1. Projects use 3D Solid Modelling software creating
virtual simulation and verification of mechanical
stresses.
2.Aluminium cylinder cast in steel moulds and manufactured by CNC machines to assure millesimal
tolerances during all manufacturing phases.
3.Redesigned water jackets to increase capacity
4. Cylinder liner with a special silicon carbide and nickel coating mixture to grant the best fluidity of the
piston and durability of the cylinder.
5.Lapping performed in rooms with indoor temperatures of around 20 degrees, in order to have an
excellent control of the boring and of each cylinder
quality.
6. Cylinder support surfaces are perfectly parallels in
order to eliminate any matching inaccuracy.
PowerA [Max = 34.7]
35
25
PowerA
POWER CURVES
30
20
15
10
4000
5000
6000
OPTIONAL
ATHENA [25.9 kW / 34.7 HP]
Test made with:
- ATHENA Cylinder kit Ø 76.8 mm.
7000
8000
9000
EngSpd RPM
10000
11000
12000
13000
OEM [25.65 kW / 34.4 HP]
Test made with stock engine.
ATHENA SUGGESTS TO USE ALSO:
Forged piston Ø 76,75 HIGH COMPRESSION 14,2:1 (not included);
Forged piston Ø 76,76 HIGH COMPRESSION 14,2:1 (not included);
GET GP1-EVO ECU STANDARD 2010-2011 (not included);
GET GP1-EVO ECU GPA 2010-2011 (not included);
Oil FIlter (not included);
Air Filter (not included).
- S4F07680008A
- S4F07680008B
- PE00140002
- GK-GP1EVO-0004
- FFC007
- S410210200069