WOSSNER 4086DA Piston Kit with a 96.96 mm piston size is designed for select Yamaha motorcycle applications. The kit includes the piston, rings, pin and clips.
The piston is forged from aerospace-grade aluminum alloy and features optimized machining for reduced weight while maintaining strength in key areas, including the crown and skirt wall cross section. A permanent skirt coating helps reduce friction and piston rock for quiet operation and improved performance.
Distributor part number: 09106839. Manufacturer part number: 4086DA.
Vehicle fitment: 2023 Yamaha YZ450F; 2024 Yamaha YZ450F; 2025 Yamaha YZ450F; 2026 Yamaha YZ450F; 2024 Yamaha WR450F; 2025 Yamaha WR450F; 2026 Yamaha WR450F; 2024 Yamaha YZ450FX; 2025 Yamaha YZ450FX; 2026 Yamaha YZ450FX.
Features:
- Brand: WOSSNER
- Product: Piston Kit
- Piston Size: 96.96 mm
- Manufacturer Part Number: 4086DA
- Distributor Part Number: 09106839
- Construction: Forged aerospace-grade aluminum alloy
- Skirt Coating: Permanent coating helps reduce friction and piston rock
- Machining: Optimized for lightness while maintaining strength in key areas
- Included Components: Piston, rings, pin and clips
- Fitment: Fits select 2023–2026 Yamaha YZ450F, YZ450FX and WR450F models
Fitment:
2023 Yamaha YZ450F
2024 Yamaha WR450F
2024 Yamaha YZ450F
2024 Yamaha YZ450FX
2025 Yamaha WR450F
2025 Yamaha YZ450F
2025 Yamaha YZ450FX
2026 Yamaha WR450F
2026 Yamaha YZ450F
2026 Yamaha YZ450FX