Black Spring-Loaded Chain Tensioner For 49cc 66cc 80cc Motorized Bicycle Engine

Keep your motorized bicycle's chain right where it belongs with this spring-loaded chain tensioner kit.

It's a brand new, unbranded part that's specifically designed to fit 49cc, 66cc, and 80cc engine kits.

You know the drill—chains can get loose and sloppy, causing wear and even coming off at the worst times.

This little black tensioner uses a strong spring to keep constant, gentle pressure on your chain, stopping slack and ensuring a smooth, reliable ride.

It comes as a complete kit with everything you need for installation.

It's a simple, cheap upgrade or replacement part that can save you from a ton of headaches down the road.

If you're building or maintaining a motorized bike, this is one of those essential bits of hardware that just makes everything work better.