Bel-Ray® Thumper Racing Synthetic Ester Blend 4T Engine Oil is a 4-stroke motorcycle racing oil that combines the finest quality synthetic esters and highly-refined mineral base oils specifically engineered for today’s 4-stroke single cylinder, multi-valve racing engines. Provides maximum anti-wear protection for valve-trains, rings, cylinders and pistons. Delivers maximum horsepower while providing consistent clutch performance. Suitable for air-cooled/liquid-cooled 4-stroke engines and wet clutches. Meets API SM and JASO MA2 requirements.
Can be used in all 4-stroke motorcycle engines with or without wet clutches.
Reduced cylinder and ring wear.
The shear stability provides superior lubrication and film strength. Minimizes friction for maximum power.
Prevents clutch grabbing for an easily controlled and efficient gear shifting and clutch operation.