Box Two Chain Tensioners let you dial in your chain tension so it's just right. Two mounting holes provide room for ample adjustment on most frames. When used properly, Box Two Chain Tensioners help protect frame dropouts and keep your rear wheels locked in place where they should be. For use with 10mm axles only.
Adjusting chain tension is quick and easy with the Box Three Chain Tensioner. With a single hole "lollipop" design, these tensioners reduce weight and help keep your rear wheel locked in place.
SS Tensioner, Spring Loaded Single speed chain tensioner (fits to rr mech hanger)Spring loaded chain tensioner,Takes up chain slack when running SS on vertical dropout frames,Bolt fixes to rear mech hanger,Adjustable chainline.