SRAM 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.

Technologies

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 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 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.

Features

This XX1 rear derailleur is an integral part of the SRAM 1X drivetrain system. No comprimises

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 hybrid bearings

Carbon cage

Specifications

Speeds: 11-speed

Weight: 245g

Colors: Black

Compatibility: 1×11 X-Actuation

Bearings: Ceramic Hybrid Bearing Pulleys

Cage Sizes: Long

Pivot Design: Horizontal Parellelogram Design

Max Tooth: 42t

Pulleys: 12t X-Sync Pulley Wheels

Technology Highlight(s): X-Actuation, X-Horizon, Roller Bearing Clutch, Cage Lock, X-sync

Reviews

Bike Mag

Tested: Ten Months On SRAM XX1

“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.” View Article

by Seb Kemp, BIKEMag.com, December 1, 2013

Huffington Post

SRAM RISE 60, XX1 Quarq, Guide Ultimate with RockShox RS-1 featured on Huffington Post

Huffington Post’s Max Gladwell recently completed the Point-to-Point 80-mile Singletrack race in Utah focused on reviewing the new SRAM RISE 60 Wheels, SRAM Guide Ultimate brakes, SRAM XX1 Quarq equipped drive train and RockShox RS-1. In nearly 8 hours of non-stop racing that descends and ascends over 10,000 feet ranging from 7k to almost 10k feet he gave much praise to our products for getting him through. View Article

by Max Gladwell, huffingtonpost.com, September 21, 2015

Enduro MTB

SRAM 1×11 drivetrain | long-term test | Enduro Magazine

The German Enduro Magazine published a long-term test about the SRAM 1×11 drivetrain. With each of these group sets having ticked off several thousand kilometers on their test fleet, they thought it was time to see how they were faring. The 1×11 drivetrains have been out on all terrains for serious testing – from the Bavarian mountains to the flowing trails around Stuttgart, and not forgetting the filthy wet lines of Scotland. View Article

by Christoph Bayer, enduro-mtb.com, September 24, 2015