PRIMARY CHAINCASE LUBE. Specially formulated high-quality lubricant for the primary chaincase for all Big Twin models. Ideally suited to stand up to high pressures. Helps ensure long service life for the primary chain. Works to prevent clutch slipping and chatter for a consistent engagement, including in hot stop-and-go traffic. Features a distinctive red color to help detect leaks. 1 liter bottle, 12 per case; sold each.