Performance Machine Classic Rear Caliper Kit For Harley Dyna 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 For use with 11.5 rotors Complete with caliper and bracket