Wossner Piston Kit for 1998-2001 Yamaha YZ125 53.95mm 8091DA

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