Bare Knuckle Performance, sprung chain tensioner

A secondary (rear wheel) chain tensioner. We all know that rear chain slap, whipping, stretch and regular adjustments comes with the territory. Sounds bad but this automatic chain tensioning device makes the world a better place by keeping a constant tension on the bottom side of the chain for a nicer ride, less maintenance and a longer lasting chain. Note: Requires fitment and welding by a qualified mechanic.