Record Direct Mount Caliper Brake Rear Reach: 40-50mm Black OPEN BOX BR19-DMRSS. Direct-mount brakes for Super Record and Record groupsets. Compatible with wider rims and 28mm tires. Stiff structure plate behind the brake to prevent any flex in the frame/fork while braking. Rear brake available for seat stay (-05), or under BB mount(-03). Weight: 158g (under BB), 160g (fork/seatstay). Bike / Ebike Parts. For MORE GREAT DEALS on powersports parts and accessories! Your friends at MOTOMENTUM appreciate your Business!