ATHENA Top End Gasket Kit for Yamaha P400485600063 * Premium Engine Rebuild Set

Upgrade and maintain your Yamaha engine with the ATHENA Top End Gasket Kit, specifically designed for Yamaha models requiring part number P400485600063. This high-quality kit is ideal for professional racers, semi-pros, and dedicated amateurs who want to optimize their engine performance before a race or during midseason tune-ups. The kit includes a top-of-the-line MLSS head gasket and multiple premium base gaskets of varying thicknesses, allowing you to tailor your engine's compression ratio to your specific fuel choice and racing conditions.

The ATHENA P400485600063 gasket kit offers flexibility by enabling you to switch between standard gasoline with stock compression and race fuel with higher compression for increased power output. This adaptability ensures your engine performs at peak efficiency whether you're competing in a race or enjoying recreational riding. Crafted from durable materials, these gaskets are designed to withstand high temperatures and pressures, ensuring reliable sealing and long-lasting performance.

It's important to note that this kit does not include valve stem seals, rubber parts, shims, or other fiber gaskets. Instead, it focuses on providing superior head and base gaskets that are essential for a top-end rebuild or refresh. Proper installation and sealing are crucial for achieving optimal engine performance and longevity. Whether you're performing a routine maintenance or preparing for racing season, this gasket kit is a reliable choice for professional and enthusiast riders alike.