Avid BB7 MTB S Disc Brake The Avid BB7 MTB S disc brakes are some of the best mechanical disc brakes on the market today. The Avid BB7 S brakes are super reliable and offer compatibility with long pull levers. Avid Tri-Align Caliper Positioning System (CPS) is easy to use for getting the perfect alignment. The strength of the Avid BB7 S brakes will bring you peace of mind as you're zipping down the trail. For use with with long cable-pull levers Mono-block caliper design has outboard pad adjustment Spring tension is adjustable Dual pad adjuster knobs and full pad retraction for drag free setup Caliper has 74mm mounting bolt spacing; mounting adaptors are sold separately Rotor is not included Intended Use: XC Weight: 197g | Avid | Bb7 Mtb S Disc Brake | Black | Front Or Rear, No Disc Or Adapter