Description
The Wiseco Piston Kit restores and elevates your ATC 250R’s top-end performance with precision-engineered components built to handle sustained high-RPM operation. A quality piston kit is non-negotiable for riders who demand reliability on the trail or track—worn pistons lead to compression loss, poor throttle response, and potential catastrophic engine failure. This kit delivers the exact fitment and performance characteristics your 1985-1986 ATC 250R needs to run strong.
Key Technical Features:
- High-silicon aluminum alloy
- CNC-machined precision design
- Optimized compression ratio
- Complete gasket kit included
- Race-tested durability
- 66.25mm bore specification
- Fits 1985-1986 ATC250R
- Also compatible: CR250R (1984-1985), TRX250R (1986)
- Bolt-on installation
- Wiseco MPN: 526M06625
