Wilwood 140-16678 Wilwood 84-89 Porsche 911 Rear Dynapro Caliper Kit 3in MT - BlackWilwood 140 16678 Wilwood 84 89 Porsche 911 Rear Dynapro Caliper Kit 3in MT Black Forged Narrow Dynapro Radial caliper, pad, and bracket kits are engineered as high performance street and race for Porsche 911's. These kits combine the high tech styling and superior performance of the NDPR P calipers and the positive response, long wear, high fade resistance, and easy clean properties of the BP 10 compound Smart Pads