Bel Ray 10w-40 Thumper 4T Synthetic Ester Blend Engine Oil

Bel Ray 10w-40 Thumper 4T Synthetic Ester Blend Engine Oil

SKU #: BR-1007-THUMPER-10.40
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 SM and JASO MA2 requirements. Suitable for air-cooled/liquid-cooled 4-stroke engines and wet clutches.

Perfect for all single cylinder engines (thumpers), Grom, Z125 Pro, SR400, SR500, TW200, and much more!

1-Quart bottle
$12.25 In stock


Availability: In stock


  • For use in all 4-stroke engines requiring an oil meeting the API SG/SH/SJ/SL/SM 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
  • Provides cost-effective, superior performance protection and reliable all-season use
  • Use in all 4-stroke motorcycle engines with or without wet clutches
  Features and Benefits:
  • Quality engine protection
Bel-Ray anti-wear chemistry reduces bearing and valvetrainwear. Prevents scuffing.
  • Superior deposit control
Cleans deposits. Controls sludge and varnish formation. Keeps ring lands and grooves free of carbon build-up.
  • Economical protection
Provides cost-effective lubrication protection of engines and transmissions.
  • Smooth power transfer
Prevents clutch grabbing for an easily controlled and efficient gear shifting and clutch operation.