Description
If you’re running a 1985-1986 Honda ATC250R, a worn or damaged piston directly kills your power output and engine reliability. Wiseco’s forged-aluminum piston restores lost compression, sharpens throttle response, and gives you the durability to push hard without catastrophic failure. This is a straightforward bolt-on upgrade that pays dividends whether you’re racing or riding hard on the trail.
- High-silicon aluminum alloy
- CNC precision machined
- 66.75mm bore diameter
- Lightweight wrist pins
- Forged construction
- Enhanced compression ratio
- Exact OEM fitment
- 1985-1986 ATC250R compatible
- Also fits 1986 TRX250R
- Also fits 1984-1985 CR250R
- Superior heat resistance
- Resists wear and tear








