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.
For use in all 4-stroke engines requiring an oil meeting the API SG/SH/SJ/SL/SM/SN standards For use in all 4-stroke motorcycles with or without wet clutches including those specifying the use of a JASO MA/MA1/MA2 qualified oil Use in all 4-stroke motorcycle engines with or without wet clutches Features and Benefits: Superior anti-wear Reduced cylinder and ring wear. Longer bearing life. Superior deposit control Cleans deposits. Controls sludge and varnish formation. Keeps ring lands and grooves free of carbon build-up. High viscosity stability The shear stability provides superior lubrication and film strength. Minimizes friction for maximum power. Smooth power transfer Prevents clutch grabbing for an easily controlled and efficient gear shifting and clutch operation.