Wilwood's aluminum rear disc/drum backing plate bracket is an undrilled, single-piece caliper mounting bracket made from high-strength aluminum alloy and fitted with steel 5/16-24 clinch nuts for accessory or caliper attachment. These brackets are offered to match common axle flanges and will work with one-piece rotors from 11.00" to 12.19" or hat-mount rotors from 12.88" to 14.00".
Wilwood Aluminum Rear Disc / Drum Backing Plate Bracket, Undrilled - Single