Description
A worn or damaged top end directly compromises combustion efficiency, power output, and engine longevity. The WSM Top End Kit delivers OEM-quality pistons and matched components engineered to restore or upgrade your 4-stroke engine’s performance and reliability. This complete assembly kit eliminates guesswork during rebuild, providing everything needed for a proper top-end refresh without sourcing individual components.
- Includes pistons, rings, pins
- Needle bearings included
- Head gasket set
- Base gasket set
- Intake and exhaust gaskets
- Oil filter included
- 4-stroke engine compatibility
- Yamaha fitment specific
- MPN: 54-546-20
- Complete assembly kit
- Bolt-on installation ready
