Description
If you’re rebuilding a classic 2-stroke Yamaha RD, piston quality directly determines how long your engine will last and how reliably it performs. The Wiseco 393M06600 combines high-silicone forged construction with precision engineering to handle sustained high RPM running without thermal distortion or ring blow-by. This is a complete kit—everything you need to get your RD back on the road with confidence.
- 66mm bore diameter
- High-silicone forged material
- Fits Yamaha RD350 (1973-1975)
- Fits Yamaha RD400 (1976-1992)
- Includes compression rings
- Includes wrist pin
- Includes circlips
- Reduced thermal expansion
- 2-cycle engine optimized
- MPN: 393M06600
- Requires Wiseco rings
- Bolt-in installation
