Description
When you’re pushing a 2-stroke to its limits, stock pistons become your bottleneck. The Wossner 8179D050 kit delivers the strength and precision engineering needed to handle aggressive riding, high RPMs, and sustained load—all while reducing friction and extending engine life. Complete with piston, rings, pin, and clips, this is a bolt-in solution for serious IT250 and YZ250 builders.
Built from 4032 T6 forged aluminum, Wossner’s piston undergoes Finite Element Analysis to optimize every dimension for reliability and performance. The permanent skirt coating minimizes piston rock and friction, keeping your engine running cleaner and quieter even under full throttle. Whether you’re racing or rebuilding after hard use, this kit gives you OEM-plus durability without compromise.
- Fits: Yamaha IT250 (1978–1980), YZ250 (1976–1979)
- Bore: 70.44mm
- Material: 4032 T6 forged aluminum
- Heat-treated: T6 process
- Includes: Piston, rings, pin, clips
- Coating: Permanent friction-reducing skirt
- Design method: Computer-optimized FEA
- Installation: Bolt-on replacement
- MPN: 8179D050
