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Motor oils are designed to meet the fuel efficiency and emissions requirements of cars and trucks. However, most motorcycles operate at higher engine speeds and temperatures and share oil with the transmission, which requires completely different oil formulation. The mechanical forces of high-rpm operation and gear engagement can physically tear automotive motor oils apart. Tightly integrated high-performance motorcycle engines also produce extreme heat that can exceed an automotive motor oil’s ability to protect your engine and transmission. Motorcycle oil is specifically formulated to handle this extra heat and pressure to protect your engine and transmission
Your bike is precision engineered—your oil should be too. Motorcycle manufacturers focus on making bikes, so their branded oil is usually outsourced to target the minimum specifications. They also don’t publish oil test results, so you can’t verify the performance claims or compare oil quality. When you choose a premium synthetic motorcycle oil backed by published test results, you can expect superior stability at extreme temperatures for extended oil and engine life and superior stability under pressure for smooth, precise shifting and extended transmission life.
Different types of motorcycles present unique challenges. However, most motorcycle engines can easily surpass 10,000 rpm, turning cheap motor oil into foam that provides zero protection against wear. For fast-revving adventure, touring, street, sport and race bikes, anti-foam agents in premium oils deliver maximum protection when you’re riding aggressively. Synthetic motorcycle oils also help prevent and remove wear-causing deposits for cleaner engines and improved performance in bikes of any vintage. For peace of mind at any speed or temperature, look for professional-grade synthetic oil specifically engineered for motorcycles
The JASO MA/MA2 standard means the motorcycle oil is wet-clutch compatible to ensure you experience smooth, reliable operation every time you pull the clutch, shift gears and twist the throttle. Synthetic motorcycle oils that meet both JASO and API service requirements are specifically designed for maximum performance in motorcycles, no matter what you ride or how hard you ride.
Air-cooled V-twin engines get extremely hot, which can thin the oil and leave behind power-robbing varnish and sludge. For large American cruisers, AMSOIL Synthetic V-Twin Motorcycle Oil maintains viscosity under extreme heat and pressure for maximum performance and engine life. It is specifically designed to be used in the engine, transmission and primary chaincase, delivering the convenience of complete motorcycle protection in a single oil.
Dirt bike engines are built for performance rather than longevity, and riders stress their bikes even further with aggressive clutch and throttle action. AMSOIL Synthetic Dirt Bike Oil provides superior oil film strength for maximum engine protection and consistent clutch performance in harsh racing and off-road riding conditions.
Whether you’re cruising the backroads, commuting to work in stop-and-go traffic, touring on a cross-country adventure or pursuing podiums on the racetrack, AMSOIL Synthetic Motorcycle Oil is purpose-built to deliver precise shifts and long engine and transmission life. It is boosted with premium anti-foam agents to deliver maximum power and superior reliability in fast-revving adventure, touring, street, sport and race bikes, even when you ride aggressively.
Click the category links above or use our Motorcycle Lookup Guide to quickly identify the right AMSOIL products for your motorcycle.