WOSSNER Piston Kit, 96.96 mm, Yamaha, 4085DA

Piston Kit - 96.96 mm - Yamaha

The WOSSNER Piston Kit 4085DA is designed for select Yamaha motorcycle applications and features a 96.96 mm piston size. The piston is forged from aerospace-grade aluminum alloy and uses optimized machining to reduce 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 quieter operation and improved performance. The kit includes the piston, rings, pin and clips for the listed applications.

Fits 2023 Yamaha YZ450F; 2024 Yamaha WR450F, YZ450F and YZ450FX; 2025 Yamaha WR450F, YZ450F and YZ450FX; and 2026 Yamaha WR450F and YZ450FX. Distributor part number: 4085DA. Manufacturer part number: 4085DA.

Features:

• Brand: WOSSNER
• Product: Piston Kit
• Piston size: 96.96 mm
• Material: Forged aerospace-grade aluminum alloy
• Skirt coating: Permanent coating designed to reduce friction and piston rock
• Machining: Optimized for lightness while maintaining strength in key areas
• Included components: Piston, rings, pin and clips
• Vehicle fitment: 2023 Yamaha YZ450F; 2024 Yamaha WR450F, YZ450F and YZ450FX; 2025 Yamaha WR450F, YZ450F and YZ450FX; 2026 Yamaha WR450F and YZ450FX
• Distributor part number: 4085DA
• Manufacturer part number: 4085DA

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 YZ450FX