The WOSSNER Piston Kit measures 95.95 mm and is designed for select Honda CRF450R, CRF450RX, and CRF450RWE applications. The kit features enhanced piston pin oiling slots, radial boss machining, and annular grooves to support improved wrist pin lubrication. Its lightweight piston design uses tight piston wall clearance for quieter engine operation.
The skirt is coated to help reduce friction and improve break-in performance, while ring land treatment supports improved ring seal and oil control. A double-bridged forging design is used where noted. The kit includes the piston, rings, wrist pin, and pin locks. Distributor part number: 09106159. Manufacturer part number: 8937DA.
Vehicle fitment includes the 2019 Honda CRF450R and CRF450RX; 2020 Honda CRF450RX and CRF450RWE; 2021 Honda CRF450RX; 2023 Honda CRF450R; 2024 Honda CRF450RWE; 2025 Honda CRF450RX; and 2026 Honda CRF450R and CRF450RX.
Features:
- Size: 95.95 mm piston kit
- Piston Design: Lightweight construction with tight piston wall clearance for quieter engine operation
- Lubrication: Enhanced piston pin oiling slots, radial boss machining, and annular grooves for improved wrist pin lubrication
- Friction and Break-In: Coated skirt helps reduce friction and improve break-in performance
- Ring Seal and Oil Control: Ring land treatment supports improved ring seal and oil control
- Forging: Double-bridged forging design where noted
- Kit Contents: Piston, rings, wrist pin, and pin locks
- Fitment: Select 2019–2026 Honda CRF450R, CRF450RX, and CRF450RWE models
Fitment:
2017 Honda CRF450R
2017 Honda CRF450RX
2018 Honda CRF450R
2018 Honda CRF450RX
2019 Honda CRF450R
2019 Honda CRF450RWE
2019 Honda CRF450RX
2020 Honda CRF450R
2020 Honda CRF450RWE
2020 Honda CRF450RX
2021 Honda CRF450R
2021 Honda CRF450RWE
2021 Honda CRF450RX
2022 Honda CRF450R
2022 Honda CRF450R-S
2022 Honda CRF450RWE
2022 Honda CRF450RX
2023 Honda CRF450R
2023 Honda CRF450R-S
2023 Honda CRF450RWE
2023 Honda CRF450RX
2024 Honda CRF450R
2024 Honda CRF450R-S
2024 Honda CRF450RWE
2024 Honda CRF450RX
2025 Honda CRF450R
2025 Honda CRF450RWE
2025 Honda CRF450RX
2026 Honda CRF450R
2026 Honda CRF450RWE
2026 Honda CRF450RX