Sram x5 9 speed rear derailleurthe sram x5 rear derailleur is a 9 speed mech which uses a 11 cable pull ratio and is compatible with all sram 9 speed mtb shifters'. '.strtoupper('c')oming in long and medium cage, allowing you to cover up to a 45t sprocket.features material alloy b knuckle, alloy links, high strength grilon composite p knuckle capacity medium 37t long 45t compatibility all sram 9 speed mtb shifters with a 11 ratio gears 9 speed only mount type standard hanger type mount clutch type no sram exact actuation for precise dependable shifting performance direct route technology for lighter effort shifting weight 360g long cagemanufactuer reference codesblack long cage 00.7515.082.000 black medium cage 00.7515.082.010 silver long cage 00.7515.082.020silver medium cage 00.7515.082.030technologies exact actuation  when sram launched the road technology from scratch, they reapplied their mtb proven sram 11 actuation ratio shifter cable travel derailleur movement for 9 speed rear shifting'. '.strtoupper('e')xact actuation helps to simplify stabilise the uneasy act of balancing rear derailleur hanger design, tight cog spacing and exact cable tension'. '.strtoupper('t')he result the easiest index shifting system to set up and it stays that way'. '.strtoupper('m')atchmaker compatible  save weight and clutter on the bar with matchmaker'. '.strtoupper('t')his system holds avid levers, a number of sram triggers and the rockshox pushloc control—all with one tidy, light clamp.buy sram components from chain reaction cycles, the world's largest online bike store.black long cage 00.7515.082.000black medium cage 00.7515.082.010silver long cage 00.7515.082.020silver medium cage 00.7515.082.030