AMSOIL Synthetic Motorcycle Oils are formulated with premium synthetic base stocks and high-performance additive technology that provide superior multi-functional benefits for the special requirements of motorcycle applications. These independent and exclusive AMSOIL formulations provide second-to-none viscosity protection for hot-running American and foreign motorcycle engines, transmissions and primary chaincases.

10W-30 Advanced Synthetic Motorcycle Oil – AMSOIL Synthetic 10W-30 Motorcycle Oil is the result of extensive research, and it is specially formulated to excel in all areas unique to motorcycles, including high engine RPM, wet clutch lubrication, extreme pressure regions of gears and rust common to short drives and storage.

10W-40 Advanced Synthetic Motorcycle Oil – Advanced multi-functional formula for both domestic and foreign motorcycles. Recommended for high-performance liquid or air-cooled 4-stroke engines and transmissions and both 4- and 2-stroke motorcycles. Wet-clutch compatible. Not recommended where an API GL-4 or GL-5 gear oil is required.

20W-50 Advanced Synthetic Motorcycle Oil – Advanced multi-functional formula for both domestic and foreign motorcycles. Excellent in air-cooled motorcycle engines due to high heat resistance. Can be used in engines, transmissions and the primary chaincase. Not recommended where an API GL-4 or GL-5 gear oil is required.