Description
The PROX Piston Kit is engineered for the demanding demands of off-road racing, delivering the reliability and precision your KTM 125SX demands at high RPM. OEM pistons wear quickly under competition conditions—upgrading to PROX ensures consistent compression, reduced blowby, and extended engine life between rebuilds. Whether you’re racing motocross or pushing hard on the trail, a quality piston kit is non-negotiable maintenance.
- Fits KTM 125SX
- OEM replacement specification
- Off-road racing application
- High-compression tolerances
- Bolt-on installation
- MPN: 016220B









