SRAM GX 2X11
GX 2X11
SRAM

SRAM GX 2X11

In Stock

The SRAM GX 2x11 rear derailleur delivers the widest 2x11 gear range available with X-ACTUATION precision and a Roller Bearing Clutch for chain control. Available in long and medium cages for 10–42T cassettes.

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Available Options

Option Price Availability
SRAM, GX 2X11, Rear derailleur, 2X11sp., Long cage, Black — In Stock
SRAM, GX 2X11, Rear derailleur, 2X11sp., Medium cage, Black — In Stock

Product Details

Overview & Technology

SRAM GX 2x11 (RD-GX-11-A1) is built to give mountain riders the broadest 2x11 gearing range while keeping shifts crisp and chain retention strong. Designed for use with 10–42T cassettes, the GX 2x11 pairs SRAM’s X-ACTUATION™ shifting geometry with a Roller Bearing Clutch to eliminate slop and dampen chain movement on rough trails. The derailleur uses a lightweight aluminum main body and a robust cage assembly with high-quality steel hardware and sealed bearings for long service life. At just 265g (long cage) it balances durability with weight-conscious performance — ideal for gravity-assisted trail riding where range and reliability matter.

Key Features & Benefits

X-ACTUATION™ technology provides precise lateral movement of the derailleur for consistent, accurate shifts across the entire 11-speed range — less hunting between cogs and reduced index variation compared with traditional designs. ROLLER BEARING CLUTCH™ minimizes chain slap and maintains chain tension over rough terrain, reducing dropped chains and improving pedalling efficiency. Combined with a long or medium cage option, GX 2x11 handles wide-range 10–42 cassettes while keeping chain wrap and chain length optimized. • 10–42T compatible — supports wide-range 2x11 setups. • Long and medium cage options — match cage length to chainring and cassette range. • Standard mount — fits most modern MTB frames with a hanger.

Fit, Compatibility & Specifications

The GX 2x11 is a direct-fit replacement for standard MTB derailleur hangers and is tuned for SRAM 11-speed systems. Key specs: 11-speed, maximum cog 42T, minimum cog 10T, long-cage weight ~265g, and standard B-tension/mounting. Available in both long and medium cage lengths to suit different chainring/cassette combinations. Installation notes: set B-tension to achieve correct upper jockey clearance across the 10–42 cassette, and use proper chain length for your chosen chainring pair. The derailleur accepts standard 11-speed chains and pairs best with SRAM 11-speed shifters and cassettes for ideal shift calibration.

Who It's For

The SRAM GX 2x11 is aimed at mountain riders who want the flexibility of a wide 2x11 range without sacrificing shift accuracy or chain stability — ideal for mixed-terrain trail riders, all-mountain weekenders, and light enduro riders who prefer two front chainrings for climbing and high-speed sections. If you ride technical singletrack and need reliable chain retention plus the wide top-to-bottom gearing of a 10–42 cassette, GX 2x11 offers an excellent balance of value, durability, and performance.

Key Features

  • ✓ X-ACTUATION™ for precise, consistent 11-speed shifts
  • ✓ ROLLER BEARING CLUTCH™ reduces chain slap and dropped chains
  • ✓ Compatible with 10–42T cassettes for the widest 2x11 range
  • ✓ Available long and medium cages to match drivetrain setups
  • ✓ Lightweight aluminum construction with sealed bearings
  • ✓ Standard hanger mount for broad frame compatibility
  • ✓ Long-cage weight approx. 265g — durable yet light

Specifications

Maximum Cog 42T
Minimum Cog 10T
Primary Color Black
Cage Long
RD Weight 265g
Speed 11
Mount Standard

Product Identifiers

Vendor Item # 00.7518.082.000
UPC 710845771859

Frequently Asked Questions

Is the GX 2x11 compatible with 1x drivetrains?

Yes — mechanically the GX 2x11 will work in 1x setups, and the Roller Bearing Clutch improves chain retention. However, the derailleur is optimized for 2x11 use with wide-range 10–42 cassettes and indexed front shifting expectations, so you may see slightly different chain wrap behavior depending on chainring choice.

Which cage length should I choose: medium or long?

Choose long cage when running large total capacity (big difference between small chainring and large cassette cog) or when using large chainrings. Medium cage is suitable for more modest total capacities and saves a little weight. Match cage length to your specific chainring pair and cassette range for best chain tension.

How do I set B-tension for a 10–42 cassette?

Adjust the B-tension screw so the upper jockey wheel has the recommended clearance from the largest cog (consult SRAM's torque/clearance specs for exact mm). Proper B-tension ensures smooth shifting to the biggest cogs and prevents pulley-to-cog interference.

Can I service the Roller Bearing Clutch?

The clutch is designed for long-term durability, but periodic inspection and light lubrication of pivot points is recommended. Major clutch service typically requires SRAM-specific parts or a tech service; follow SRAM maintenance guidelines to retain optimal performance.

Will this derailleur fit frames with ISCG tabs or direct mount hangers?

The GX 2x11 uses a standard derailleur hanger mount. If your frame has a direct-mount interface or non-standard hanger, you may need an adapter or compatible hanger to fit the derailleur properly.

Buying Guide

When choosing a rear derailleur for a 2x11 mountain drivetrain, prioritize total capacity (the difference between largest and smallest chainring plus cassette range) and cassette compatibility. The SRAM GX 2x11 is engineered for wide-range 10–42 cassettes and is available in medium and long cage options to match different chainring setups. Also consider weight, material durability, and clutch technology — features like a Roller Bearing Clutch and sealed pivots improve chain control and longevity on rough trails. Finally, ensure your frame uses a standard hanger mount or get the correct adapter for a secure fit.

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