High end Dual-Pivot Caliper rear brake ULTEGRA BR-R8000 from SHIMANOStabilizer between axles reduces deformation and improves braking efficiencyMore predictable, linear braking curveNarrower gap between armsCompatible with wider 28C tire sizeClear contact feeling with balanced rigidity, weight and stopping powerSleek designWider clearance with larger tire sizesWeight:178 gSLR-EV is SLR with a dual symmetric pivot brake caliper. The short-arm brake design employs two bearings and a roller to realize greater efficiency in the pivot area and deliver superior modulation and power for braking. Together with the BC-9000 brake cable, the latest calipers deliver 36% more braking power than SHIMANOs previous brake model.