Description
If you’re running a 1983-1984 Honda XR350R, piston wear directly impacts power delivery, fuel efficiency, and engine reliability. The Wiseco 85mm Piston Kit restores lost performance and allows you to safely push higher compression ratios without sacrificing durability. This is the rebuild component serious XR350R owners choose when they want measurable gains in throttle response and peak output.
Technical Specifications:
- Diameter: 85mm
- Compression Ratio: 10:1
- Material: High-silicon aluminum alloy
- Manufacturing Process: Precision forged
- Fitment: Honda XR350R 1983–1984
- Part Number: 4286M08500
- Installation: Engine rebuild required
- Strength-to-Weight: Optimized ratio
- Thermal Stability: Extreme conditions rated









