Description
A worn or damaged top end directly impacts your engine’s compression, efficiency, and power output—making a quality piston kit essential for any serious rebuild. The WSM Top End Kit delivers OEM-grade components in one complete package, eliminating the guesswork and multiple part orders. Whether you’re refreshing a high-mileage 4-stroke or maximizing performance, this kit provides everything needed for a reliable, precision rebuild.
- Complete piston assembly
- Piston rings included
- Wrist pins and clips
- Needle bearings
- Head gasket
- Base gasket
- Intake gasket
- Exhaust gasket
- Oil filter included
- .25mm oversized piston
- 4-stroke applications
- Honda fitment: 54-231-11
- MPN: 5423111
- Bolt-on installation
