Surly Tuggnut Chain Tensioner for Horizontal DO
Ever stomp on the pedals just to have your rear wheel slide forward in the dropouts and throw your chain? There are lots of BMX-style tensioners out there, but few of them fit in many dropouts without some serious grinding. So, Surly decided to design a chain tensioner that will keep that rear wheel static in most rear-facing horizontal dropouts. Plus, it even has a bottle opener!