Description
If you’re running a KTM 450 XC-W and want measurable gains in throttle response and combustion efficiency, an 11.8:1 compression piston kit is the foundation for that upgrade. Wiseco’s CNC-machined design ensures precise tolerances and reliable power delivery across the RPM range, whether you’re tackling technical terrain or pushing lap times. This complete kit includes rings, wrist pins, and circlips—everything you need for a straightforward installation.
- Bore diameter: 95mm
- Compression ratio: 11.8:1
- Material: High-grade aluminum alloy
- Machining: CNC-precision
- Fitment: KTM 450 XC-W 2012–2016
- Kit contents: Piston, rings, wrist pin, circlips
- Installation: Bolt-on replacement
- Weight: Lightweight design
- MPN: 40091M09500









