The STR calipers have more pad volume than our previous parts for more pad area and more grab with less effort. To increase stiffness the calipers have a bridge bolt.
The rear AeroRotors are 328x28mm and have modest CFD optimized venting, about the same level as our previous front brakes did. Our old rotors were solid. Our new rotors will run much cooler. Even with the added thickness, the new rotors are not much heavier than our old solid ones were.
You can see the venting on the new hats between the rotor friction ring and the hat itself. This helps keep the hub and rotors cooler just like the front rotors.
The bracket bolts actually thread into the knuckle for maximum clearance.