Description
A worn piston is one of the most common culprits behind power loss and reliability issues in your Polaris Sportsman 400. The Wiseco Piston Kit gives you everything needed for a complete top-end rebuild—with forged high-silicone construction that resists thermal expansion and delivers consistent performance lap after lap. Whether you’re rebuilding after hard use or stepping up your engine’s capability, this kit eliminates guesswork with precision-engineered components designed specifically for your machine.
- Forged high-silicone construction
- Superior strength, reduced expansion
- Fits 1994-2003 Polaris Sportsman 400
- Complete rebuild kit included
- Piston, rings, wrist pins
- Circlips and gasket set
- Wiseco-specific ring compatibility
- 2-cycle engine optimized
- Enhanced power output
- Improved throttle response
- Bolt-on installation ready
- Part number PK1109
