XX1 X-HORIZON™ Rear Derailleur
With its “horizontal parallelogram” design and pulley offset, X-HORIZON™ keeps the chain gap constant across all 11 gears, providing fast, precise shifts. By limiting all movement to the horizontal axis, this design is faster, 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 XX1 shifter, the X-HORIZON™ RD forms the backbone of X-ACTUATION™ technology for unbelievably smooth shifting action.
- This XX1 rear derailleur is an integral part of the SRAM 1x™ drivetrain system. NO COMPROMISES.
- X-HORIZON™ design reduces shift force, ghost shifting and chain slap
- 12-tooth X-SYNC™ pulley wheels
- Large upper pulley offset automatically adjusts chain gap
- Ceramic bearings
- Carbon cage
Some variations of this product featured on this page are not available for purchase and are installed on bicycles as original equipment only. See your dealer for details.Find a Dealer Product Matrix
Specifications for XX1 X-HORIZON™ Rear Derailleur
|Bearings||BLACKBOX™ ceramic bearing pulleys|
|Pivot Design||Horizontal Parellelogram design|
|Pulleys||12t X-SYNC™ pulley wheels|
|Technology Highlight(s)||X-ACTUATION™, X-HORIZON™, ROLLER BEARING CLUTCH™, CAGE LOCK™, X-SYNC™|
|Retail Availability||August 2012|
- 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™
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.
Developed specifically for SRAM 1X, X-ACTUATION keeps shifting sharp and consistent across the entire 10- to 42-tooth cassette.
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.
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 conditions, the X-SYNC™ chain rings have been designed with mud-clearing recesses for the inner chain links and rollers. Engineered in Germany, X-SYNC™ rings are an integral part of the SRAM 1X™ drivetrain.
Documents Available for XX1 X-HORIZON™ Rear Derailleur
"In conclusion, it’s still the same old drivetrain system we have had since the late 1800s, but XX1 is its biggest evolutionary step forward in a long time. It is simple, silent, reliable and rather resilient to real world use. All things you don’t normally expect from a boutique drivetrain. In short, I would find it hard to go back to anything else now.”