Description
When you’re pushing a YZ125 to its limits, a worn or undersized piston robs you of compression, efficiency, and reliability. The Wossner 8091DA restores peak performance with a purpose-built 53.95mm piston that’s precisely engineered to handle the demands of 2-stroke racing. This complete kit—piston, rings, pin, and clips included—gives you everything needed for a proper rebuild without the guesswork.
Wossner’s 4032 T6 forged aluminum and proprietary skirt coating eliminate piston rock and friction losses that plague stock or worn units. The result is a stronger, lighter piston that dissipates heat efficiently while delivering the cylinder sealing you need for consistent power delivery, whether you’re racing or riding hard on the weekend.
- Fitment: 1998-2001 Yamaha YZ125
- Bore Size: 53.95mm
- Material: 4032 T6 forged aluminum
- Complete Kit: Piston, rings, pin, clips
- Skirt Coating: Permanent friction-reducing
- Heat Treatment: T6 for durability
- Design Method: FEA optimized
- Installation: Bolt-on replacement
- Manufacturer: Wossner (German-engineered)
- Part Number: 8091DA
