As its name implies, this is Sram's Ultimate brake design for XC and light trail use. Sram took the same technology used in the brake that Loic Bruni rode to a Downhill World Championship and packed it into a smaller, sleeker, lighter-weight and XC-optimized package. The carbon-fiber level blade pulls crisp and clean, thanks to pivot bearings and the DirectLink design. And it maintains that feel throughout the ride because it is matched to Sram's monoblock, two-piston caliper. This caliper’s superior heat management and smooth piston actuation give you braking power exactly when and how you need it. And the bleeding edge design significantly simplifies fluid maintenance.   Specification Same proven lever technologies as Guide - piston, seals, reservoir and bladder. Compact lever body with DirectLink. New detent design for reach adjust. New, 21-millimeter, 2-piston monoblock caliper for superior heat management, consistency, control and feel. Carbon lever and blade. Lever pivot bearings. Ti hardware. Alloy backed pads. Bleeding Edge. MatchMaker X. PLEASE NOTE: Spare barbs and olives not included.