The SRAM XX 10 Speed Trigger Rear Shifter is one of the lightest & most compact shifters ever created, the XX Trigger features a fully adjustable carbon fibre lever, resulting in minimal weight with maximum durability. Pair the XX trigger with the Match maker clamp system to create the most streamline handlebar setup available in mountain biking. The Exact Actuation system uses a 1:1 actuation ratio (shifter cable travel: derailleur movement) for 10 speed shifting. This Exact Actuation helps to simplify & stabilize the uneasy act of balancing rear derailleur hanger design, tight cog spacing & exact cable tension. The result: the easiest index shifting system to set up, & it stays that way. The Match Maker X clamp offers a clean integrated system that conserves handlebar real estate while putting everything right where you want them for those late braking or gear change situations that might just buy you valuable seconds.