Schaeffer’s Extreme Performance V-Twin Primary Lube 

is designed for use in HD Big Twin Models in the primary chain case and in the wet and primary/transmission common sumps found in Harley Davidson Sportster models with clutches sharing the same sump as the transmission gears.

Extreme Performance V-Twin Primary Lube can be used in chain cases equipped with original, modified or aftermarket high-performance clutch assemblies.