Piston Kit - Yamaha RD 400 - 400 2T - ProX

Please select the piston size from the box above.

ProX piston kit for Yamaha RD 400 - 400cc 2T. The complete application list can be found below.

Technical specifications:
- standard cylinder diameter (factory diameter): 64.00 mm
- engine type: 2-stroke
- total piston length (B): 72.00 mm
- piston pin diameter (C): 16.00 mm
- compression height (D): 28.00 mm
- pin ring position measured from center (E): 14.50 mm
- pin ring position measured from center (F): 14.50 mm
- internal distance of piston pin (G): 22.50 mm
- piston crown shape: domed
- additional information: 2 intake ports
- manufacturing technology: cast piston coated with molybdenum disulfide (MoS2)

Available piston sizes (A):
- standard (64.00 mm)
- +0.25mm (64.25 mm)
- +0.50mm (64.50 mm)
- +0.75mm (64.75 mm)
- +1.00mm (65.00 mm)
- +1.25mm (65.25 mm)
- +1.50mm (65.50 mm)
- +1.75mm (65.75 mm)
- +2.00mm (66.00 mm)
- +2.25mm (66.25 mm)
- +2.50mm (66.50 mm)