Description
When your top end is worn, you lose compression, power, and reliability—exactly what you can’t afford on the track or trail. The WSM Top End Kit delivers a complete piston assembly solution with OEM-quality components engineered for 4-stroke engines that demand precision and longevity. This .5mm oversized kit restores your engine’s performance while eliminating the guesswork of sourcing individual gaskets and bearings separately.
- Includes: Pistons, rings, pins, clips
- Needle bearings: High-load rated
- Head gasket: OEM specification
- Base gasket: Precision-cut seal
- Intake/exhaust gaskets: Complete coverage
- Oil filter: Included, ready to install
- Oversized bore: .5mm above standard
- Engine type: 4-stroke compatible
- MPN: 5421812
- Installation: Professional machine work recommended
- Material: Forged piston construction
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