![Bel-Ray Thumper Racing Synthetic Ester Blend 4T Engine Oil 15W50](http://roco4x4.com/cdn/shop/files/82e127c1-ef0f-4d8a-98fa-33bd672c8dbf.c4f08db8be9b67f2e23aa138fcefae2c_700x700.jpg?v=1715360156)
![Bel-Ray Thumper Racing Synthetic Ester Blend 4T Engine Oil 15W50](http://roco4x4.com/cdn/shop/files/82e127c1-ef0f-4d8a-98fa-33bd672c8dbf.c4f08db8be9b67f2e23aa138fcefae2c_700x700.jpg?v=1715360156)
Description
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. Meets API SN and JASO MA2 requirements. Suitable for air-cooled/liquid-cooled 4-stroke engines and wet clutches.