Twin Power™ O-ring and seal kits provide precision OEM replacements for Harley-Davidson engines, transmissions, and primaries, ensuring leak-free performance in convenient multi-packs. Durable...

Converts rear belt to chain drive and increases tire clearance. The Conversion Sprocket from Twin Power™ converts the front pulley to an offset sprocket and chain drive for use with wide tires. ...

Twin Power™ Premium Engine Oil is specially formulated to protect American V-Twin motorcycle engines operating under extreme conditions. Possessing a special additive package that extends engine life...

Precision-made mainshaft bearing for direct O.E. replacement on 4-speed setups. Supports the left side of the mainshaft to help maintain proper alignment and smooth shifting Ideal for...

Twin Power™ Drive Chain for American V-Twins. High-tensile steel, solid rollers and oversize pins ensure longer life and higher strength. The 530 Heavy-Duty is a perfect replacement chain for classic...

Twin Power™ splined shaft engine sprockets for early Big Twins deliver a solid, dependable connection at the crank, replacing worn stock units to restore accurate primary drive alignment. Matches...