Sport Transmission Fluid has been developed for the unique demands of Harley-Davidson® Sportster® V-Twin motorcycle transmissions equipped with wet clutches. Bel-Ray Sports Transmission Fluid 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. Formulated for the transmission and primary of Sportster® motorcycles and Buell® Blast™ motorcycles. Wear protection extends transmission life. Prevents clutch slipping and chatter for consistent engagement. Distinctive red color for easy leak detection. For Sportster® transmissions.