he DURA-ACE R9100 series of Flat Mount disc brakes bring powerfully integrated brake performance to the highest rungs of road cycling. The R9170 calipers are light weight while offering better control and confidence in race conditions.

Specifications
Optimally balanced hydraulic brake system for racing
Easy and clean bleeding system
One piece Alloy body design
Integrated low-profile caliper design
Light weight
Improved heat dissipation
Better control and confidence in race conditions

Mfr Claimed Weight
133g (Front)
123g (Rear)