Avid bb5 road disc brakediscover the disc brake difference. Disc brakes arent just for mountain bikes any more. One ride with the smooth, powerful bb5 road and youll know the confidence and control that disc brakes bring to your road riding adventures.tri aligntrade caliper positioning systemtrade another original avid technology making your life better—theres never been an easier brake to install and adjust. With avids tri aligntradecaliper positioning systemtrade, aligning the caliper to the rotor literally takes seconds. Just loosen the cpstrade bolts a little, and then squeeze the brake lever while re tightening the bolts. Perfect caliper alignment—just like that.features weight 335 grams 160mm rotor front post mount caliper design mechanical, monoblok finish platinum rotor not supplied pad sintered adjustment inboard knob pad adjustment, tri align caliper positioning compatibility road style levers intended use cx trk urban roadbuy avid components from chain reaction cycles, the world's largest online bike store.