Piston kit (increased compression) - Honda CRF 250 R ('10-'13) - 250 4T - ProX

Please select the piston size from the box above.

ProX piston kit for Honda CFR 250 R (2010-2013) - 250cc 4T. The complete application list can be found below.

Technical specifications:
- standard cylinder diameter (factory diameter): 76.80 mm
- engine type: 4-stroke
- total piston length (B): 33.20 mm
- piston pin diameter (C): 16.00 mm
- compression height (D): 11.00 mm
- intake valve pocket diameter (E): -
- exhaust valve pocket diameter (F): -
- internal distance of piston pin (G): 20.00 mm
- piston crown shape: domed
- other information: 4 x valve pockets
- manufacturing technology: forged piston

- compression ratio: 14.2:1

Available piston sizes (A):
- A (76.77 mm)
- B (76.78 mm)