Description
A top-end rebuild is one of the most critical maintenance intervals for any 4-stroke engine, and cutting corners with inferior components will cost you performance and reliability when it matters most. The WSM Top End Kit delivers OEM-quality pistons and a complete gasket set in one package, eliminating the guesswork of sourcing individual components and ensuring proper fitment on your Honda 420. This is the rebuild solution for riders who refuse to compromise on durability or precision.
- Fits Honda 420
- Piston kit included
- Compression rings
- Wrist pins
- Circlips
- Needle bearings
- Head gasket
- Base gasket
- Intake gasket
- Exhaust gasket
- Oil filter
- Complete gasket set
- 4-stroke models only
- MPN: 54-231-21









