Description
A worn or damaged top end doesn’t just cost you power—it compromises reliability when you need it most. The WSM Top End Kit delivers OEM-quality components engineered to restore your 4-stroke engine to peak performance, whether you’re rebuilding after high-mileage use or addressing ring blow-by and compression loss. This complete kit eliminates the hassle of sourcing individual gaskets, rings, and bearings separately, giving you everything needed for a thorough, professional-grade top-end refresh.
What’s Included:
- Precision-forged pistons
- Piston rings (matched set)
- Wrist pins
- Piston clips
- Needle bearings
- Cylinder head gasket
- Base gasket
- Intake gasket
- Exhaust gasket
- Engine oil filter
Specifications:
- Overbore size: .75mm
- Fitment: Polaris 4-stroke models
- Manufacturer: WSM
- MPN: 54-311-13
- Installation: Requires engine disassembly









