Piston Kit - Gas Gas EC 450 F ('13-'15) / Yamaha YZ 450 F ('03-'09) / WR 450 F ('03-'15) - 450 4T - ProX

Please select the piston size from the box above.

ProX piston kit for Gas Gas EC 450 F (2013-2015) / Yamaha YZ 450 F (2003-2009) / WR 450 F (2003-2015) - 450cc 4T. The complete application list can be found below.

Technical specifications:
- standard cylinder diameter (factory diameter): 95.00 mm
- engine type: 4-stroke
- total piston length (B): 40.40 mm
- piston pin diameter (C): 18.00 mm
- compression height (D): 14.50 mm
- pin groove position measured from center (E): -
- pin groove position measured from center (F): -
- internal distance of piston pin (G): 19.50 mm
- piston head shape: recessed
- other information: 5 x valve pockets
- manufacturing technology: forged piston
- compression ratio: 12.5:1

Available piston sizes (A):
- A (94.95 mm)
- B (94.96 mm)
- C (94.97 mm)