Bel-Ray Thumper Racing Works Synthetic Ester 4T Engine Oil

Bel Ray Thumper Racing Works Synthetic Ester 4T Motor Oil is a premium 4-stroke synthetic motorcycle racing oil engineered for full competition use. Its full synthetic ester base provides unmatched thermal stability and film strength, protecting engines under extreme racing conditions. Designed for air-cooled and liquid-cooled 4-stroke engines with wet clutches, it meets API SM and JASO MA2 specifications.

Key Features:

• Reduces cylinder and ring wear; extends bearing life
• Controls sludge and varnish formation; keeps ring lands and grooves clean
• Shear-stable formula ensures superior lubrication and film strength
• Minimizes friction for maximum power output
• Prevents clutch grabbing; ensures smooth, controlled gear shifts and clutch operation