Performance Machine Black Ops 6-Piston Caliper for use with 11.5" Rotor Left Front 0051-2909-SMB Style and function merge for an ultra-clean look with proven technology for optimal braking performance. Each caliper is machined from billet aluminum to eliminate flex Subjected to rigorous testing on the PM brake dyno to ensure performance Compatible with ABS For use with 11.5/11.8in. rotors (112 X 6B calipers)