Caliper Bracket Big GM Clamp On ALL42101 Allstar Performance MSRP: Now: $53.99 Was: Allstar Caliper Bracket Big GM Clamp On ALL42101 Made from 1/4" thick steel, brackets fit 3" diameter axle housings and work with 11.75" diameter rotors. Available for many setups. Alternate Description CALIPER BRACKET BIG GM CLAMP ON Part... MSRP: Now: $53.99 Was: