Synthetic Motorcycle Oils

Outstanding Performance for Harley-Davidson and Other Bikes


AMSOIL Synthetic Motorcycle Oil is recommended for most motorcycle brands, including Harley-Davidson®, KTM, Ducati, Aprilia, BMW and Triumph. With several riders among our ranks, including our Co-President & CFO, Dean Alexander, we understand firsthand the tremendous power and heat motorcycles can generate – and the unique challenges they present to lubricants. That expertise has resulted in a lubricant prized for its ability to fight wear and heat in powerful, hot-running Harley-Davidsons and other bikes. You can trust its ability to protect your bike no matter which brand you ride or how hard you ride it.  

Synthetic V-Twin
Motorcycle Oil


Large-displacement, air-cooled, low-revving V-twins run notoriously hot, placing unique and stringent demands on the lubricants that protect them. AMSOIL Synthetic V-Twin Motorcycle Oil is formulated to keep hot-running V-twin bikes running cool and operating at peak performance, no matter how hard you ride.

  • Fights engine wear
  • Cools hot-running engines
  • Also excellent for transmission and primary chaincase
Parked up Harley-Davidson motorbike with rider sat on seat overlooking the valleys below and blue sky
Indianapolis, Indiana, USA – September 28, 2019: The Circle City Classic Parade, A group of Bikers going down Pennsylvania street during the parade
Amsoil synthetic V-twin motorcycle oil product range
Closeup from low angle looking up at rider on high performance red motorcycle
Amsoil synthetic motorcycle oil 4T product range

Synthetic Metric
Motorcycle Oil


Excessive friction and heat rob high-performance motorcycle engines of horsepower and longevity. AMSOIL Synthetic Motorcycle Oil’s premium synthetic formulation effectively reduces performance-robbing friction for maximum horsepower, cooler engine temperatures and long equipment life.

  • Premium wear protection
  • Smooth, confident shifts
  • Cool, clean performance

Synthetic Dirt Bike Oil


AMSOIL Synthetic Dirt Bike Oil’s superior friction-durability helps minimise clutch slippage, fade and chatter, giving you consistent clutch feel during take-offs or when manoeuvring around obstacles on the trail. Testing with professional teams in Monster Energy Supercross helped fine-tune AMSOIL Synthetic Dirt Bike Oil for consistent clutch feel and outstanding wear protection.

  • Confident clutch feel
  • Protects against wear
  • Maximises power

Dirt Bike and rider parked on gravel mountain road overlooking valley scene
Windhoek, Namibia. 1 September 2011. A group of adventure motorbike riders stop to refuel on a gravel road outside Windhoek
Amsoil synthetic dirt bike engine oil and transmission fluid product range
Parked up Harley-Davidson motorbike with rider

Amsoil Products for Harley-Davidson® Motorcycles


Not only do we formulate one of the best synthetic motorcycle oils available, we’re the Official Oil of the most prestigious motorcycle rallies in the world, helping bring Sturgis, Daytona Bike Week and Laconia Motorcycle Week to life for the millions who attend. We proudly support your passion for riding.