Drawing upon 16 years of innovation and experience with clutches, these new oils have been engineered and tested to ensure they meet Rekluse's high standards of performance. Rekluse Factory Formulated Oil is the perfect complement to any O.E.M. or aftermarket clutch. All three oils are full synthetic and Rekluse Factory Certified for use with Rekluse auto and manual clutch systems. Smoother shifting. Reduced clutch heat for longer clutch life. Direct and consistent clutch feel. Improved power transfer through the clutch. Rekluse Factory Certified for optimal clutch and engine performance. Meets API SL, JASO MA2 standards. Notes: V-Twin 20W-50 is recommended for use in V-Twin primaries. Designed for use in wet clutch systems (2T/4T).