Mobil 1 98LD49 20W-50 V-Twin Synthetic Motor Oil for Motorcycle - 1 Quart Maximum shear stability to resist viscosity shear down in high performance engines and transmissions Exceptional thermal stability to resist oxidation and high-temperature degradation Outstanding protection against wear of engine and transmission components Enhanced lubrication to help maintain maximum power and acceleration over the life of the engine Optimized wet-clutch performance , meets JASO MA