Wossner Yamaha YZ125 2005-2019 53.97mm Piston Kit 8160DC

When you're pushing a YZ125 to its limits, piston durability and ring seal integrity directly impact throttle response, engine longevity, and race-day reliability. Wossner's 8160DC kit is engineered to handle the thermal and mechanical demands of 2-stroke competition, giving you the confidence to attack every lap without worrying about catastrophic failure. This complete solution eliminates guesswork—you get a matched piston, rings, pin, and clips from a manufacturer with decades of German precision engineering.

The 4032 T6 forged aluminum construction provides the strength-to-weight ratio essential for high-RPM stability, while the permanent skirt coating reduces friction and piston rock for quieter, more efficient combustion. Wossner's use of Finite Element Analysis in the design process means every dimension has been optimized for performance under load, not just assembled to nominal tolerances.

• Bore Diameter: 53.97mm
• Material: 4032 T6 Forged Aluminum
• Complete Kit Contents: Piston, rings, pin, clips
• Fitment: Yamaha YZ125 2005–2019
• Heat Treatment: T6 Process
• Skirt Coating: Permanent friction-reducing
• Design Method: FEA-optimized
• Installation: Bolt-on replacement
• Origin: German-engineered
• MPN: 8160DC