Piston Kit - Yamaha WR 450 F ('19-'20) / YZ 450 F ('18-'19) / YZ 450 FX ('19-'20) - 450 4T - ProX

Please select the piston size from the box above.

ProX piston kit for Yamaha WR 450 F (2019-2020) / YZ 450 F (2018-2019) / YZ 450 FX (2019-2020) - 450cc 4T. The complete application list can be found below.

Technical specifications:
- standard cylinder diameter (factory diameter): 97.00 mm
- engine type: 4-stroke
- total piston length (B): 40.90 mm
- piston pin diameter (C): 18.00 mm
- compression height (D): 15.50 mm
- pin ring position measured from center (E): -
- pin ring position measured from center (F): -
- internal distance of piston pin (G): 19.80 mm
- piston head shape: flat
- other information: 4 x valve pockets
- manufacturing technology: forged piston
- compression ratio: 12.8:1

Available piston sizes (A):
- A (96.95 mm)
- B (96.96 mm)
- C (96.97 mm)