In life, we all know that things that sag when they aren't supposed to are no good. It's no different with the bikes we ride. Having a saggy chain causes unwanted damage and chatter noise no one wants to hear. It's super important for you single speeders to keep things tight. Here at Bikewagon.com, we've got all kinds of chain tensioners, from high-performance models to ones with great style. So take a look around at our collection of bike parts and you'll find the chain tensioner that fits your ride.