Red Line® Primary Case Oil

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Red Line’s® V-Twin Primary Case Oil is designed specifically for 1984-to-present American Big Twin motorcycle primary chaincases with wet clutches. Designed to operate over a wide temperature range, this Primary Case Oil improves clutch operation while 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 helps to apply more power in modified engines.

Red Line® V-Twin Primary Case Oil is available in quarts only. Order a case of 12 and save 10%!