Race Face Cinch BSA Threaded Bottom Bracket, 68/73mmNavigating bottom bracket standards can be a headache when you're trying to customize your ride. Fortunately, the Cinch system from Race Face offers an easy solution as the cranks will fit just about any bike if you get the correct Cinch bottom bracket. This particular one allows you to experience the ride enhancing stiffness of a Cinch 30mm spindle in any frame that has a standard 68 73mm bottom bracket shell. Product Dimensions: 10 x 8 x 2 inches