They'll stop it no worries if mine are anything to go by. Probably just better OEM options out there I imagine. I wanted easy bolt on kit, no complaints. Put a new, same size master on at the same time and it works fine too. Wasn't sure if i'd need to mess with it due to going 200mm rotor single pot to 276mm rotor 4 pots, but the pistons were sized to roll factory gear from memory.