SRAM Exact Actuation for precise and reliable 10-speed performance. Direct Route technology reduces switching effort. Cassette with maximum 36 teeth. 9V compatible. The 1:1 ratio is a must have in design. Each pull pulley moves the rear derailleur identically. The gear ratio remains precise and supple, whether you're kicking through mud, climbing over rocks or getting caught in roots: wherever you are, no matter what conditions. It is reliable, durable and easiest to adjust. Easy to adjust. Not for nothing it is the first choice of the top mountain bikers. EA contributes to simplifying/stabilizing the complex process where it is about balancing the design of the shift eye, limited space for the pinion and perfect tensile tension. The result is the easiest to set up index-controlled switching system, and so it remains too. MatchMaker compatible. With MatchMaker you get a lighter and streamlined handlebar. This system combines AVID levers, multiple SRAM shifters and RockShox PushLoc controls in a discreet, lightweight housing.