Description
The Wossner N1006 top end bearing is a critical wear component in your YZ85’s top end assembly—it directly impacts piston speed stability, combustion chamber seal, and overall engine longevity. A failing or worn bearing introduces unwanted play in the piston pin assembly, compromising performance and risking catastrophic engine damage. This OEM-spec replacement ensures your engine runs at peak efficiency with minimal friction and maximum reliability.
Built to Wossner’s precision standards, the N1006 handles the extreme thermal and mechanical demands of 2-stroke racing engines. Whether you’re maintaining a track bike or rebuilding after a season of hard use, this bearing restores your top end to factory specifications and performance.
- Bore diameter: 14mm
- Outer diameter: 18mm
- Width: 16.5mm
- High-quality steel construction
- Reduced friction design
- Withstands extreme temperatures
- Precise, tight tolerances
- OEM-compatible fitment
- Fits 2002-2022 YZ85
- Bolt-on installation









