Since 1979, Red Line Synthetic Oil Corporation has grown to manufacture more than 100 quality products, including motor oils, gear oils, assembly lubes, fuel additives, and its popular WaterWetter cooling additive for the automotive, motorcycle, marine, and industrial markets. Based in Benicia, California, Red Line has a reputation with racers and enthusiasts alike for creating products that perform and protect better than any on the market, regardless of price. Popular for Sportster V-Twin transmissions, 65cc, 85cc, 125cc, and 250cc two-stroke motocross transmissions, as well as shifter kart gearboxes, and CRF transmission cases. ShockProof® features microscopic solid medium to provide cushioning between gear teeth, while maintaining lower drag. Provides consistent shifting and wet-clutch operation.