New features for the 2007 X9 Trigger Shifters include SRAMs ZERO Loss Travel, & adjustable clamp positions, just like its bigger brother X.0. The rear derailleur has also been re-designed for 2007, & features a forged B-Knuckle for enhanced stiffness, & the addition of a short cage option... & for the first time, there is now a dedicated X9 Front Derailleur available to complete your drivechain!