The SRAM GX 2x10 rear derailleur is built for 10-speed 2x MTB drivetrains — X-ACTUATION cable pull geometry for consistent, precise indexing across the cassette range, and durable GX construction suited to trail and recreational riding. A reliable mid-range 2x derailleur for builds where 10-speed gearing covers the terrain.

Highlights

  • 10-speed 2x MTB rear derailleur — GX tier
  • X-ACTUATION cable pull for consistent indexing
  • Compatible with GX 2x10 trigger and Grip Shift shifters
  • Trail and recreational MTB construction
  • Available in short and medium cage lengths

Fit and compatibility

10-speed MTB rear derailleur for 2x builds. Compatible with SRAM GX 2x10 shifters and 10-speed cassettes. Confirm cage length and maximum cog size for your cassette range before ordering.

Installation. Service. Compatibility. Find all the documentation needed to set up, use, and maintain your components in the SRAM Service hub.

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Features
  • EXACT ACTUATION™ for precise and dependable 10-speed performance
  • TYPE 2.1 technologies: ROLLER BEARING CLUTCH™ and CAGE LOCK™ (also available without TYPE 2.1 configurations)
  • Cage lengths: Short, Medium and Long

Specifications

Cage (RD) Long, Medium, Short
Cable pull ratio Exact actuation
Speed (RD) 10s
Color (RD) Black
Cage material (RD) Aluminum
Pulley bearings material Steel
Max tooth 36
Weight (g) 302
Weight Based On RD 2x10 Long Cage Black
SKU SRM-RD-GX-T21-A1
Model # RD-GX-T21-A1
Barcode # RD-GX-T21-A1
Brand SRAM