Description
A worn or damaged top end directly compromises your engine’s compression, power delivery, and reliability. The WSM Top End Kit gives you everything needed for a complete piston and gasket refresh, restoring your 4-stroke to peak performance without sourcing individual components. Whether you’re rebuilding after high-mileage use or recovering from detonation damage, this comprehensive kit saves time and ensures proper fitment across all critical wear items.
What’s Included:
- Pistons
- Piston rings
- Wrist pins
- Retaining clips
- Needle bearings
- Head gasket
- Base gasket
- Intake gasket
- Exhaust gasket
- Oil filter
Technical Specifications:
- Manufacturer: WSM
- Part Number: 54-228-12
- Piston Oversize: .5mm
- Engine Type: 4-stroke
- Material: OEM-equivalent steel
- Fitment: Honda models
- Installation: Professional assembly recommended






