Description
Stock pistons wear out, lose compression, and rob your engine of power—especially under sustained racing conditions. The WSM Piston Kit for Honda 300 delivers OEM-quality construction with performance-focused upgrades like MOS2 coating that actively reduces heat and friction while strengthening ring grooves. When you’re rebuilding or refreshing your top end, these pistons give you the reliability of factory engineering with measurable gains in efficiency and durability.
- Oversized +.25mm bore
- Includes piston, rings, pin, clips
- MOS2-coated skirts reduce friction
- Heat-dissipating piston design
- Hardened ring groove tops
- Improved E-clip retention
- Meets/exceeds OEM quality
- One kit per cylinder
- Additional rings available separately
- Bolt-on installation (no machining)
- MPN: 5022304K
