Trp r970sl magnesium caliper brakes take brakes design to a whole new level with forged cnc machined magnesium arms rotating on dual pivots feathery titanium hardware innovative sliding quick release and mechanic pleasing inplace pad holders are the perfect chassis for the grippy trp brake pads these feathery light brakes come with two sets of brake pads for carbon or aluminium rims so you can ride train and race with confidence