Description
If you’re running a KTM 520 EXC and want measurable gains in power and throttle response, a high-compression piston kit is one of the most cost-effective upgrades available. The Wiseco 4731M09500 raises your compression ratio to 11:1, translating to sharper acceleration and better mid-range performance without sacrificing reliability. Since this is a complete kit with rings and circlips included, installation is straightforward for anyone comfortable with basic engine work.
Technical Specifications:
- Bore diameter: 95mm
- Compression ratio: 11.0:1
- Material: High-silicon aluminum alloy
- Fitment: KTM 520 EXC 2000–2002
- Installation: Bolt-on replacement
- Kit includes: Piston, rings, circlips
- Heat dissipation: Enhanced design
- MPN: 4731M09500









