Description
A complete top-end rebuild requires precision components that work in concert—and compromising on any single element undermines the entire assembly. The WSM Top End Kit delivers OEM-quality pistons, rings, and gaskets in one package, eliminating the guesswork of sourcing individual parts and ensuring proper fitment on your 4-stroke Yamaha. This is a bolt-on solution for riders who demand reliability and consistent performance without the downtime of piecing together a rebuild.
- Includes pistons and rings
- Piston pins and clips
- Needle bearings (wrist pin)
- Head gasket
- Base gasket
- Intake gasket
- Exhaust gasket
- Oil filter included
- Yamaha 4-stroke compatible
- MPN: 54-540-13
- Bore spec: .75mm
- Complete top-end assembly









