DESIGNED FOR - the latest Big-Twin motorcycle engines that specify 20W50 motor oil, including Milwaukee-Eight, Evolution, Twin Cam and aftermarket engines of similar designSUPERIOR FILM STRENGTH - through the use of ester base stocks for protection and ring seal, blended with specific friction modifiers that are compatible with wet-clutchesFULL-SYNTHETIC - with PAO and Ester base stocks and 2200 ppm of ZDDP for antiwearPOPULAR MOTOR OIL FOR - JASO MA/MA2 applicationsWHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises