With proven hydraulic braking technology, the Shimano 105 BR-R7170 caliper features the Shimano Flat Mount System and its low-profile design that is ideal for road bikes. More compact and lighter than ever, the R7170 brakes offer wide pad clearance for easy wheel removal and quiet performance as well as one-way bleeding for easy, clean maintenance. Please note: Rear caliper will work for front fork, however, the rear version does not include front mount adapter with hardware.