Red Line Synthetic motorcycle oils offer the specific chemistry required for motorcycles. Engine oils and gear oils are specifically engineered for the latest high-revving four-stroke motocross bikes and ATVs, Sportbikes, and V-Twins. Each gear oil product reduces the thinning effect from high temperature. Engine oils are packed with higher levels of anti-wear chemistry like zinc and phosphorus. Special friction modifiers in our engine oils better wet-clutch operation.