SRAM X7 9 Speed Rear Derailleur 2013
SRAM X.7 Rear Derailleurs 2012: Updated design with a slimmer and lighter profile over previous X.7. Di.R.T (Direct Route Technology) for light-effort shifting performance. Compatible with ESP (1:1 ratio) trigger and twist shifters. Aluminum outer / Steel inner links and cages, Grilon composite P-knuckle, steel tension spring, and an alloy B-knuckle with alloy bolt. Hardened pivots, ported 11-tooth pulleys, and a matte alloy finish.
Came today, took 5 minutes to setup and is smooth as butter. This is the best price online!
I purchased this derailleur to replace the broken X4 that came stock on my bike. It installed quickly, was easy to dial in, and works great. It provides smooth, fast shifts and is a huge improvement over the old X4. Good Deal!