Bontrager's BackRack S Disc is made for disc-equipped mountain and hybrid bikes with frame sizes 18 inches and under, and road bike frames 54cm and under. This durable and light rack is perfect for turning your bike into a commuter and errand-runner. Tough and rustproof stainless-steel hardware is included and the single-bolt strut mounts allow for maximum adjustablility and ease of installation. Plus, the BackRack is compatible with standard trunk bags and panniers as well as Bontrager's Interchange models (sold separately). What's more, the BackRack includes a spacer to give you the necessary clearance for use with most disc brakes.
I have woman's frame bike, in the petite (smallest/shortest) size with disc brakes. There is almost nothing out there in rear rack world that will fit this without add-on converter kits, bending parts, hacksaws, and more. This went right on and fit perfectly. Manufactures instructions were sketchy, but it was so intuitive we had no problems quickly and easily put it on(only 5 parts, 4 screws and a couple of headless screws.) Wish there was a place to show how well it fits. It sits level and looks like it belongs. Dan @ Helen's was answered questions and was great to work with. I worried about ordering something from California, never touching it and return hassles. Helen's was the only place that would answer my questions and carried women's bikes in petite size. This is what every small bike owner with disc brakes has been looking for!
Bottom LineYes, I would recommend this to a friend