Transmission & Gear Oil

Big Twin Transmission Oil is a multi-grade oil designed specifically for the high pressure and shearing forces unique to Big Twin transmissions. Its distinct red color makes leaks easy to identify in multiple lubrication cavity engines. Premium shear stable, high Viscosity Index base oils prevent lubricant viscosity breakdown caused by the stresses of Big Twin engines. All Bel Ray products are RoHS compliant and manufactured to a high standard right here in the USA.

Formulated for Sportster transmission/chain case lube has been developed for the unique demands of Sportster motorcycle transmissions equipped with wet clutches. Lube flows freely for better clutch cooling and provides positive clutch engagement for better starts and longer clutch life while protecting highly-loaded gears from wear, ensuring smooth shifts for more positive action.

The Milwaukee Twins® Gear and Chaincase Oil is engineered specifically for Harley Davidson® Sportster® motorcycles, featuring a premium blend of high-flow base oils and select additives. It delivers exceptional performance and protection, ensuring smooth shifting across the RPM spectrum and reliable clutch engagement under various riding conditions. This formula is designed to maintain optimal clutch coolness and performance, making it suitable for both daily commuting and high-performance applications.

Red Line V-Twin Transmission Oil with ShockProof