SRAM GX 2x10-Speed Rear Derailleur

Leveraging the legendary history of SRAM shifting, the GX 2x10 rear derailleur provides incredible shifting speed and precision. EXACT ACTUATION technology eliminates slop and shifting variation. ROLLER BEARING CLUTCH technology delivers maximum drivetrain stability-even through the most punishing terrain. And with CAGE LOCK technology, wheel removal and installation are easier than ever.

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

Technology:

• CAGE LOCK: With CAGE LOCK technology in the rear derailleur, wheel removal and installation — as well as chain installation — becomes faster and simpler. Just push the cage forward to create slack and lock it into place.
• DIRECT ROUTE: Here's the dirt on middlemen: they suck. That's why DIRECT ROUTE technology doesn't have one. Instead, the cable routes directly to the actuation mechanism. Result? Less friction. Less effort. More oomph. Plus it's impervious to cable housing damage. Nice.
• EXACT ACTUATION: When we launched our road technology from scratch we reapplied our MTB proven SRAM 1:1 actuation ratio (shifter cable travel : derailleur movement). EA helps to simplify and stabilize the uneasy act of balancing rear derailleur hanger design, tight cog spacing, and exact cable tension. The result: the easiest index shifting system to set up — and it stays that way.
• ROLLER BEARING CLUTCH: ROLLER BEARING CLUTCH technology eliminates derailleur bounce and chain slap without sacrificing precision.

Specifications:

• Model ID: RD-GX-T21-A1
• Model Name: RD-GX T21-A1
• 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

2x 3x MTB Mechanical Derailleurs User Manual (9.13 MB)