Many people were left wondering what brakes Aaron Gwin was using when his sponsorship announcement came down a couple weeks ago. TRP Quadiem SLs? WTF are those? TWell, RP has been in the game for a fair bit of time and have a reputation for quality materials for their road and CX brakes. Hydraulic DIsc brakes? Gwin demands the best so these four piston stoppers should also represent the quality that TRP uses on the road and in CX racing. Mineral oil is used vs DOT fluiid and the the lever blade is carbon fiber with a tool free reach adjustment. There currently is no "match maker" type of mount to simplify the handlebar clutter, but that is undoubtedly in the works.