Performance Machine Classic Rear Caliper Kit For Rigid Frame Going fast is good, but stopping is even better. Don't trust those stock calipers to tame you high horsepower hog! Upgrade to Performance Machine caliper and know that the most trusted name in aftermarket brakes has your back. Features: Precision machined from billet aluminum 4 piston dual action design for positive stopping power Uses 3/8-24 brake line fitting Comes with weld-on tab and 6 anchor rod Includes caliper and bracket