FIRST LOOK: SRAM XX1 One by Eleven Drivetrain

Published: 3rd July 2012 | By billy1979

SRAM XX1 was built with a dedicated 1X drivetrain philosophy-making it simpler, lighter and more durable than any other. No matter where you ride, no matter what you're up against: SRAM XX1. UNSTOPPABLE.

SINGLE-MINDED PURSUIT

Driven by a cutting-edge, single-ring carbon crank and seamless component integration, SRAM 1X drivetrain delivers flawless chain management and faster, more precise shifting. But the relationship between XX1 components goes far beyond fitment. From the X-HORIZON rear derailleur with TYPE 2 technology to the super wide range 11-speed 10-42T cassette, each component is designed to function synergistically with the others, achieving what no other 1X drivetrain has before.

XX1 Cassette

First Of Its Kind.
Ranging from 10- to 42-teeth, the 11-speed X-DOME™ delivers an incredibly wide gear range while maintaining even, optimized steps. The single-unit cassette combines with the XD™ driver body for a superior connection to the wheel. Available October 2012.

Technologies:

X-DOME
Machined from a single piece of billet steel, X-DOME has an "open" interior—giving riders better mud clearance, less weight, cleaner shifting performance and longer component life.

XD
This new cassette driver body design lets the drivetrain use a 10 tooth small cog—all while providing better interface across the entire cassette.

XX1 Crank

Developed for maximum chain control, each tooth's thickness is precisely CNC-machined to support the chain's inner and outer links perfectly. Six available chain rings (28-30-32-34-36-38) allow you to tune your gear range to match your terrain, wheel size and riding style. Each X-SYNC™ chain ring fits a single, universal spider—allowing you to change rings without removing the light-weight carbon crank arm. Available October 2012.

Technologies:

X-SYNC
A CNC-machined, "wide tooth, narrow tooth" pattern is repeated around the entire chainring, perfectly mirroring the chain's inner and outer links for maximum control.

BB30
Besides serious weight savings, this bottom bracket means narrow Q-factor, more ankle clearance, greater bearing durability and stronger crank construction.

GXP
GXP's Gutter Seal design cuts friction, durability and weight—improving both feel and performance.

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. Available October 2012.

Technologies:

X-HORIZON
This 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
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—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 Clutch™ technology eliminates derailleur bounce and chain slap without sacrificing precision.

X-ACTUATION
Developed specifically for the SRAM 1X11 drivetrain, X-ACTUATION keeps shifting sharp and consistent across the entire 10-42T cassette.

XX1 Grip Shift

Seismic Shift

Technologies:

JAWS
Once the shifter and grip interlock securely, forged aluminum clamps on either end reinforce the assembly by locking tightly to handlebar.

ROLLING THUNDER
Three rows of ball bearings provide zero friction or play—reducing the force needed to shift and promoting long-term performance under all weather conditions.

SPEED METAL
Full metal, 11-speed indexing keeps shifting crisp and precise.

XX1 Trigger Shifter

Technologies:

X-ACTUATIONTM
Developed specifically for the SRAM 1X11 drivetrain, X-ACTUATION keeps shifting sharp and consistent across the entire 10-42T cassette.

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