There is no TPA on the brake, it has automatic pad ajustmant so the pads will adjust them sleves as they wear. just dont pull the lever without the rotar in the caliper or else you will have to prise the pads apart with a screw driver so the rotar will fit back in. ive warped a rotar on my mono trial put hope replaced it for me, also i had a partially sticky piston so hope replaced my lever for me. great service by them. Also dont give the caliper to many hard knocks as i knocked the seals out of place which made it piss out oil but thankfully hope fixed that for me aswell. As for the performance of the break i love it, i have a 160 mm rotar on my mod and that sends me over the bars easily, has plenty of modultion and lots of bite. deffinatly a brake worth buying.