Description
When you’re pushing a CR80R to its limits, factory pistons become your bottleneck. The Wiseco 643M04750 delivers the strength and thermal stability you need to extract real power gains without sacrificing reliability—whether you’re racing competitively or maximizing trail performance.
This 0.50mm oversize kit is engineered to restore compression and improve combustion efficiency in worn or modified engines. High-silicon aluminum construction handles the extreme pressures and temperatures of aggressive riding, while precision forging ensures consistent performance across the entire RPM range.
- Fitment: 1986-2002 Honda CR80R
- Oversize: 0.50mm
- Material: High-silicon aluminum alloy
- Wrist pin: Lightweight design
- Construction: Precision forged
- Thermal stability: Optimized
- Installation: Standard bore sizing
- MPN: 643M04750
