SRAM X01 11 Speed Type 2.1 Rear Derailleur Black/Green

The X01 reduces shift force and wont ghost shift and shifts faster all thanks to the horizontal parallelogram design which means it only moves in one plane, horizontally. By eliminating all that unnecessary movement you get a better drivetrain. When added to the bouncing and chain slap minimizing roller bearing clutch and cage lock for maintenance and combined with the X01 shifter you get the backbone of X-Actuation technology and a step closer to the prefect gear shift.
Technology:
CAGE LOCKT
With CAGE LOCKT technology in the rear derailleur, wheel removal and installation-as well as chain installation-becomes faster and simpler. Just pushing the cage forward to create slack and lock it into place.
ROLLER BEARING CLUTCHT
ROLLER BEARING CLUTCHT rear derailleurs deliver maximum drivetrain stability-even through the most punishing terrain. With ROLLER BEARING CLUTCHT technology, derailleur bounce and chain slap are eliminated without sacrificing precision.
X-ACTUATIONT
Developed specifically for SRAM 1xT, X-ACTUATIONT keeps shifting sharp and consistent across the entire cassette.
X-HORIZONT
The X-HORIZONT rear derailleur's '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.
X-SYNCT
SRAM X-SYNCT 1x chain rings provide the highest level of performance and durability. The SRAM X-SYNCT tall square teeth edges engage the chain earlier than traditional triangle shaped teeth. The sharp and narrow tooth profile, as well as rounded chamfer edges, help manage a deflected chain. To provide the best possible performance in muddy conditions, the X-SYNCT chain rings have been designed with mud-clearing recesses for the inner chain links and rollers. Engineered in Germany, X-SYNCT rings are an integral part of the SRAM 1xT drivetrain.