The workhorse of the XX1 group, the Sram XX1 X-Horizon Rear Derailleur makes an 11 speed system possible. It starts with Sram's X-Horizon technology. X-Horizon uses a horizontal parallelogram design that eliminates ghost shifting and increases shift precision. X-Horizon also keeps the chain gap between the upper pulley and cassette, which increases shift precision. Sram's Roller Bearing Clutch eliminates chain slap and Cage Lock makes wheel removal and installation easier than ever.
SRAM XX1 11 Speed Rear Mech Technologies:
X-Actuation - Designed specifically for SRAM XX1, X-Actuation keeps shifting sharp and consistent across the entire 10-42T cassette.
X-Sync - A "wide tooth, narrow tooth" pattern is repeated around the pulley wheel, perfectly mirroring the chain's inner and outer links for maximum control.
Cage Lock - With Cage Lock, wheel removal and installation - becomes faster and simpler. Just pushing the cage forward to create slack and lock it into place.
Roller Bearing Clutch - Roller bearing clutch technology eliminates derailleur bounce and chain slap without sacrificing precision.
X-Horizon - Straight parallelogram design limits all movement to the horizontal axis, which makes ghost shifting impossible while also reducing shift force. For quicker, more exact shifting, the large upper pulley offset design maintains a constant chain gap across all gears.
SRAM XX1 11 Speed Rear Mech Features:
Designed To Work With All XX1 Components
Maximum Chain Control
Cage Lock Easy Wheel Removal
Roller Bearing Clutch Reduces Chain Slap
Buy SRAM XX1 11 Speed Rear Mech at Chain Reaction Cycles, the world's largest online cycling store.
Rated 4 out of 5 by Skyrey1 Great mech
Chain retention has been excellent and the accuracy of gear selection has been top notch right up until the jockey wheels wore out after 1200 miles of use
17 March 2014
Rated 5 out of 5 by oldnslow Smooth shifting through a large gear range.
After a number of components on the groupset mounted to my MTB reached the end of their service life and were due for replacement or an update I thought that I'd give XX1 a shot. Aside from fitting the full XX1 kit and as I can have some tendon issues in my thumbs I also decided, for the first time, to go the gripshift option. In recent rides I have found the shifting to be awesome and gear range suits the riding I do. As you would expect there is a bit of a difference between specific gears so the option is to push or spin harder. I suppose the true test of any component is the question "would you buy it again after having used it". For me the answer is definitely yes.
22 December 2013