Red Line® engine and transmission lubricants have long been the choice of racers and knowledgeable engine builders. The thermal stability, film strength and reduced parasitic drag found in Red Line engine oil all contribute to lower operating temperatures, increased engine life and more power. This defines Red Line® motor oil as a superior product for air-cooled engines, the heart of all American motorcycles. Red Line’s transmission lubricants enhance smooth shifting, lower operating temperatures and reduce transmission noise. Red Lines’® racing heritage is reflected in all of their products…you’ll see more Red Line® products at the track than any other lubricant manufacturer for all of these reasons.

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%!

Weight2.3 lbs
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