Adaptor to change SRAM's rotor size to suit SRAM's avid brake set and whatever kit you use.
. Rotor size: 200mm Front / 180mm Rear
. Caliper: 74mm
. Mount: 74mm
. Fit: post mount 40mm
. For use with Sram disc brakes with Post-style tabs
. Forged alloy construction
. Includes 2 bolts to attach adapter to the fork/frame (bolts to fix calliper onto adapter not included