When it comes to Yamaha, it's all about the engine. And when it comes to the engine, it's all about performance. So whether you prefer the track, trail, highway, water or snow, choose oil and care products specifically formulated to enhance the performance of your Yamaha engine - Yamalube. Full-synthetic GP Racing Spec (RS4GP) engine oil based on MotoGP® technology - designed for on and off-road racing applications. Blended with advanced additives to maximize engine power and enhance overall clutch / shifting performance. Extreme anti-wear-frictional properties (for superior performance while minimizing overall power loss). GP Racing Spec oil provides high thermal resistance in extreme racing and other severe environments. Modern balanced formulation designed to maximize the durability of today's advanced high-performance engine parts.