Description
A piston assembly is one of the most critical components in your engine’s combustion chamber, and OEM units often leave performance and durability on the table. The WSM +1 mm piston assembly for Polaris engines delivers measurable improvements in heat management and longevity through advanced coating technology and precision manufacturing—meaning more reliable power delivery and extended service life, especially under high-RPM or racing conditions. If you’re rebuilding or upgrading, this is the upgrade that actually performs.
Key Performance Features:
- MOS2 coating reduces friction
- Heat dissipation through piston walls
- Improved E-clip design
- Hardened ring groove tops
- Meets/exceeds OEM quality
- Nonabrasive skirt coating
What’s Included:
- Complete piston assembly
- Rings and pin
- E-clips
- Order one per cylinder
- Additional rings available separately
Specifications:
- Manufacturer: WSM
- Application: Polaris
- Oversized: +1 mm
- MPN: 50-306-07PK
- Material: High-grade aluminum alloy
- Installation: Bolt-on/Standard replacement
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