Technology to match your machine. Today’s touring, sports and V-Twin motorcycles operate on the razor’s edge of power, performance and reliability. Combined with the rigors of using unleaded gas, motorcycle oils must include the latest technology to keep up with the demands of today’s motorcycle engines. Their revving and hot running engines need a lubricant made to handle these punishing levels of stress. Since 1911, Castrol motorcycle oils have dominated the World Racing Circuit. Trust Castrol, a motorcyclist's best friend.
Full synthetic 4-stroke motorcycle oil designed for modern V-Twin engines, transmissions and primary chaincases
Engineered and tested for performance in Harley-Davidson® motorcycles
Provides excellent protection against thermal and viscosity breakdown under high temperatures generated by air-cooled V-Twin engines
Delivers proven wet clutch performance allowing for smooth operation and protection
Suitable for all Japanese and North American 4-stroke motorcycles where SAE 20W-50 is recommended