Red Line® Primary Case Oil

Red Line® Primary Case Oil

Red Line 's® V-Twin Primary Crankcase Oil is designed specifically for the primary crankcases of 1984 to present American Big Twin motorcycles with wet clutches . Designed to operate over a wide temperature range, this primary crankcase oil improves clutch operation by reducing wear and temperature.

Where most synthetics are too slippery for clutch operation, this friction-balanced product is designed to provide less slip, smoother operation , and help apply more power in modified engines.