In a time where the eclipse of disc brakes over rim brakes looms in the future, Shimano's Dura-Ace BR-9100 Brake Calipers show continued refinement of their pinnacle dual-pivot offering. They're sleeker than ever with a low-profile design that reduces gaps between the arms and tucks away the quick-release so it's not out in the wind, and braking performance improves at the top end with stiffer arms that use an internal brake-booster to reduce flex and provide a linear braking curve.
Compatible with tires up to 28 mm wide. Rear brake only. Direct mount.