Chemicals & Fluids › Synthetic Transmission Gear Lube Image 1 of 1 Synthetic Transmission Gear Lube $21.95 Certified warranty compliantCustom formulated for the Harley-Davidson Big Twin modelsSmoother and quieter shiftingReduced driveline frictionProvides protection from shock loading and gallingExtended bearing and gear lifeReduced gear and transmission temperatures Quantity: Purchase Added! Certified warranty compliantCustom formulated for the Harley-Davidson Big Twin modelsSmoother and quieter shiftingReduced driveline frictionProvides protection from shock loading and gallingExtended bearing and gear lifeReduced gear and transmission temperatures