Piston Kit - Yamaha WR 450 F ('16-'18) / YZ 450 F ('14-'17) / YZ 450 FX ('16-'18) - 450 4T - ProX

Please select the piston size from the box above.

ProX piston kit for Yamaha WR 450 F (2016-2018) / YZ 450 F (2014-2017) / YZ 450 FX (2016-2018) - 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): 40.40 mm
- piston pin diameter (C): 18.00 mm
- compression height (D): 15.20 mm
- pin groove position measured from center (E): -
- pin groove position measured from center (F): -
- internal distance of piston pin (G): 21.50 mm
- piston head shape: flat
- other information: 4 x valve pockets
- manufacturing technology: forged piston
- compression ratio: 12.5:1

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