Engineered specifically for high-performance primary applications, HARDDRIVE Primary Oil is the designated lubricant for all 1984 and newer Big Twin Harley-Davidson motorcycles equipped with a wet-type diaphragm spring clutch. This formulation is tailored to meet the unique demands of these drivetrain components, ensuring compatibility and optimal performance within the specified model range.
The blend incorporates extreme pressure additives designed to deliver outstanding film strength, wear protection, and durability under load. By maintaining robust lubrication characteristics, this oil supports the longevity and reliability of the primary drive system. The product is packaged in quarts, with cases containing twelve units for convenient garage and maintenance use.
Manufacturer Spotlight:HardDrive V-Twin(Est. 1960, Boise, Idaho, USA)
American V-Twin aftermarket engineering and performance components.