Bel-Ray Thumper Racing Oil is a premium multi-grade synthetic blend motor oil specifically designed for the large displacement, single cylinder, 4-stroke motorcycles that are burning up Motocross and Supermotard tracks around the globe. Because Bel-Ray Thumper Racing Oil is designed for the most punishing conditions, it features:
Reduced high temperature oil consumption
Protection against high-temperature viscosity breakdown and high shear and fuel dilution
Exclusive Bel-Ray anti-wear additives for extended engine life
Application: For use in engine or combined engine/gearbox systems found in single cylinder multi-valve 4-stroke racing engines. Equally suitable for air-cooled and liquid-cooled engines. Available in 1 liter and 4 liter bottles. SAE 10W-40, 20W-50
