Description
A worn top end compromises compression, efficiency, and reliability—this complete WSM piston kit eliminates guesswork by delivering OEM-quality components engineered for Yamaha 4-stroke engines. Whether you’re rebuilding after high-mileage wear or refreshing your engine for consistent performance, this kit includes everything needed for a proper top-end restoration. Direct fitment and comprehensive gasket inclusion mean fewer trips to the parts counter and faster time back on the track or trail.
- Manufacturer: WSM
- MPN: 54-546-22
- Fitment: Yamaha 4-stroke engines
- Piston kit included
- Piston rings
- Wrist pins
- Retaining clips
- Needle bearings
- Head gasket
- Base gasket
- Intake manifold gasket
- Exhaust manifold gasket
- Oil filter included
- Bore size: .5mm oversize
- Type: Complete top-end kit
- Installation: Bolt-on assembly
- Application: 4-stroke models
