Kit piston - Honda CRF 250 R ('20) - 250 4T - ProX

Please select the piston size from the box above.

ProX piston kit for Honda CFR 250 R (2020) - 250cc 4T. The complete application list can be found below.

Technical specifications:
- standard cylinder diameter (factory diameter): 79.00 mm
- engine type: 4-stroke
- total piston length (B): 34.60 mm
- piston pin diameter (C): 16.00 mm
- compression height (D): 10.50 mm
- intake valve pocket diameter (E): -
- exhaust valve pocket diameter (F): -
- internal piston pin distance (G): 17.50 mm
- piston crown shape: domed
- other information: 4 x valve pockets
- manufacturing technology: forged piston

- compression ratio: 13.9:1

Available piston sizes (A):
- A (78.97 mm)
- B (78.98 mm)
- C (78.99 mm)