V-Twin Primary oil is a mineral-based motorcycle gear oil formulated specifically for use in high-performance V-Twin transmissions and primary chain cases. Robust formulation maintains film thickness and viscosity stability across all operating temperatures to minimize chain and gear wear. Advanced formula ensures optimal clutch engagement, preventing slippage and facilitating smooth shifts even under extreme loads.

• Designed for all 1984 and newer Harley-Davidson® models with wet diaphragm spring clutches
• Formulated for use in high performance V-Twin transmissions and primary chain cases
• Ensures optimal clutch engagement, prevents slippage and facilitates smooth shifts
• Shear-stable formula minimizes chain and gear wear
• Extends chain life by minimizing stretch and wear