CHAIN SENTINEL

Chain Sentinel is easy to install, either by yourself or with the help of your local bicycle shop, requiring no special tools or experience... It cannot be overstated that chain tension is important. When your bike chain is too tight, it is harder to pedal and causes damage to your bicycle. If the chain is too loose, it can fall off the gears and cause damage to you. Chain Sentinel maintains the right tension at all times even if the chain loosens while riding.