The Sram X01 Type 2.1 Rear Derailleur facilitates the experience of mountain bikers with a horizontal parallelogram that eliminates chain movements and ghost shifting, which makes shifting smooth and precise. It features 11 speeds, a maximum capacity for 42 teeth, and a bearing clutch that eliminates chain bounce and bumps.This bike rear derailleur is made of aluminum, while the pulley bearings are steel. The X SYNC technology provides good performance, easy shifting, and silent operation. The X HORIZON allows for faster and effortless shifting. Besides, it comes with a cage lock that makes wheel removal and installation easier.Thanks to its ®horizontal parallelogram® design, X-HORIZON® can keep the chain gap the same across all 11 gears.By taking vertical movement out of the equation, this design doesn®t just make shifting faster®it reduces shift force and eliminates ghost shifting.ROLLER BEARING CLUTCH® technology reduces bounce and chain slap.CAGE LOCK® technology makes wheel removal and installation easier than ever before.Paired with the X01 shifter, the X-HORIZON® RD forms the backbone of X-ACTUATION® technology:the key to totally smooth shifting action.Features:- Large upper pulley offset automatically adjusts chain gap- X-HORIZON® design reduces shift force and ghost shifting- 12-tooth X-SYNC® pulley wheels- Sealed cartridge bearingsSpecifications:- Speeds:11-speed- Material:Carbon fiber or aluminum outer cage- Weight:250g- Compatibility:1x11 X-ACTUATION®- Bearings:Sealed cartridge bearings- Cage Sizes:Long- Pivot Design:Horizontal Parellelogram design- Max Tooth:42t- Pulleys:12-tooth X-SYNC® pulley wheels- Technology Highlight(s):X-ACTUATION®, X-HORIZON®, X-SYNC®, ROLLER BEARING CLUTCH®, CAGE LOCK®Technology:CAGE LOCK®:With CAGE LOCK® 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 CLUTCH®:Rear derailleurs deliver maximum drivetrain stability®even through the most punishing terrain.With ROLLER BEARING CLUTCH® technology, derailleur bounce and chain slap are eliminated without sacrificing precision.X-ACTUATION®:Developed specifically for SRAM 1X, X-ACTUATION keeps shifting sharp and consistent across the entire 10- to 42-tooth cassette.X-HORIZON®:The X-HORIZON® 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-SYNC®:SRAM X-SYNC® 1X chain rings provide the highest level of performance and durability.The SRAM X-SYNC® 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...