Formula 6-Bolt RotorDesigned specifically to replace the rotors for Formula's exceptional brakes, these 6-Bolt Rotors get the job done-and they do it well. With excellent heat distribution, and a two-piece aluminum frame, these rotors embody everything you look for in a brake. They feature the standard 6-bolt, 44mm BCD system, and come in varying sizes. Please not that bolts are not included.FeaturesCompatibility Formula Brakes, standard 6-bolt hubsSizes 160, 180mmWeight 95g (160mm)