The WOSSNER Piston Kit is designed for select Yamaha YZ125 and YZ125X applications. This 54.95 mm piston kit features a permanent skirt coating engineered to reduce friction and piston rock for quieter operation and improved performance. Optimized machining helps reduce weight while maintaining strength in key areas, including the crown and skirt wall cross section.
Forged from aerospace-grade aluminum alloy, the piston is built for performance-focused applications. The kit includes the piston, rings, pin and clips. Distributor part number: 09106617. Manufacturer part number: 8321D100.
Vehicle fitment includes the 2022, 2023 and 2025 Yamaha YZ125 Monster Energy Yamaha Racing Edition; 2023, 2024 and 2025 Yamaha YZ125X; 2023 and 2024 Yamaha YZ125; the 2024 Yamaha YZ125 50th Anniversary Edition; and the 2026 Yamaha YZ125X.
Features:
- Brand: WOSSNER
- Product: Piston Kit
- Size: 54.95 mm
- Manufacturer part number: 8321D100
- Distributor part number: 09106617
- Construction: Forged from 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
- Fitment: Select 2022–2026 Yamaha YZ125 and YZ125X models listed in the product description
Fitment:
2022 Yamaha YZ125
2022 Yamaha YZ125 Monster Energy Yamaha Racing Edition
2023 Yamaha YZ125
2023 Yamaha YZ125 Monster Energy Yamaha Racing Edition
2023 Yamaha YZ125X
2024 Yamaha YZ125
2024 Yamaha YZ125 50th Anniversary Edition
2024 Yamaha YZ125X
2025 Yamaha YZ125
2025 Yamaha YZ125 Monster Energy Yamaha Racing Edition
2025 Yamaha YZ125X
2026 Yamaha YZ125
2026 Yamaha YZ125 70th Anniversary Edition
2026 Yamaha YZ125X