My guess is that fins on the callipers don’t help all that much. TRP had them on earlier brakes and these are apparently an improvement. Also, Shimano put the fins on their ice-tech pads and rotors, but not the callipers, so they don’t think it’s worthwhile either.
Joined Aug. 2, 2020
Commented on TRP DH-R Evo Brake Review - 1 week, 6 days ago
My guess is that fins on the callipers ...