Description
When you’re pushing your RM125 to its limits on the track or trail, your original piston won’t cut it—you need a forged replacement engineered for the demands of serious riding. The Wiseco Piston Kit delivers measurable horsepower gains and extended service life through its high-silicon aluminum construction and precision forging design, allowing you to ride harder and service less frequently. This is a complete bolt-on replacement kit that includes everything needed for a full top-end rebuild.
- High-silicon aluminum alloy
- Forged construction
- Increased horsepower output
- Optimized compression ratio
- E-coated crown and grooves
- Complete kit: piston, rings, pins, circlips
- Extended service intervals
- 54mm bore diameter
- Fits RM125 2000–2003
- MPN: 755M05400






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