Bel-Ray Works Thumper Oil

• Product Details

  This item is considered hazardous material. Orders containing this product will ship ground only and cannot be shipped to Alaska, Hawaii, US Territories or outside the United States.

  Bel-Ray Works Thumper Racing Full Synthetic Ester 4T Engine Oil is a 4-stroke synthetic motorcycle racing oil that has been developed for full works competition use and is designed to withstand extreme racing conditions. Full synthetic ester base oils withstand the highest temperatures and stresses which provide the ultimate 4-stroke motorcycle oil. Meets API SM and JASO MA2 requirements. Suitable for air-cooled / liquid-cooled 4-stroke engines and wet clutches.

  • Thumper engines (single cylinder, multi-valve racing engines).
  • 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.

  Bel-Ray Works Thumper provides superior anti-wear and reduced cylinder and ring wear for longer bearing life. Its superior deposit control cleans deposits and controls sludge and varnish formation. This also keeps ring lands and grooves free of carbon build-up. The shear stability provides superior lubrication and film strength which minimizes friction for maximum power. Smooth power transfer prevents clutch grabbing for an easily controlled and efficient gear shifting and clutch operation.

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• # Part Numbers for the Bel-Ray Works Thumper Oil

  Product Variant	Manufacturer Part #
  1 Liter / 10W50	99550-B1LW
  1 Liter / 10W60	99551-B1LW
  4 Liter / 10W50	99550-B4LW

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