Piston Kit - Suzuki RM 250 ('03-'12) / Yamaha YZ 250 ('99-'20) / YZ 250 X ('16-'20) - 250 2-Stroke - ProX

Please select the piston size from the box above.

ProX piston kit for Suzuki RM 250 (2003-2012) / Yamaha YZ 250 (1999-2020) / YZ 250 X (2016-2020) - 250cc 2T. The complete application list can be found below.

Technical specifications:
- standard cylinder diameter (factory diameter): 66.40 mm
- engine type: 2 stroke
- total piston length (B): 79.00 mm
- piston pin diameter (C): 18.00 mm
- compression height (D): 29.00 mm
- pin ring position measured from center (E): 12.75 mm
- pin ring position measured from center (F): 12.75 mm
- internal distance of piston pin (G): 23.30 mm
- piston head shape: domed
- other information: intake window
- manufacturing technology: cast piston coated with molybdenum disulfide (MoS2)

Available piston sizes (A):
- A (66.35 mm)
- B (66.36 mm)
- C (66.37 mm)
- D (66.38 mm)