The Sealed housing is a perfect fit for Yamaha's high-performance engines, such as the 400TPI YP400G, YP400W, YP400A, and X, and the Majesty 400. It is designed to boost engine performance and durability by maintaining perfect seal and preventing leaks, even under harsh conditions. This OEM housing is engineered to ensure precise and reliable shift operation, reducing wear and tear on the rest of the drivetrain. Its robust construction and rigorous testing meet the demanding standards of Yamaha and OEM specifications, providing unparalleled performance and reliability.