Free Standard Shipping     Canada Wide Over $150cad     Lower 48 Over $225usd

Slideshow Items


SRAM GX Eagle B2 Rear Derailleur 12 Speed Lunar | RD-GX-1-B2

In store: Check availability

Available in store

Article number: RD-GX-1-B2
SKU: 00.7518.137.000

The workhorse derailleur for your 12 speed Sram Drivetrain.



  • 12 Speed 1BY MTB
  • Answers the Eagle drivetrain’s need for great capacity pair with Sram’s proven 1x specific X-Horizon design that allows for straight horizontal derailleur path through shifting.
  • 14T X-Sync lower pulley allows for easy and smooth shifting through 10-50T and 10-52t cassettes
  • Type 3.0 Roller Bearing Clutch provides torque on drivetrain for quiet and consistent operation and feel
  • Cage Lock feature allows for easy rear wheel and chain maintenance.
  • Aluminum cage
  • Weight: 290g


  • Primary Color: Black
  • Cage: Medium
  • Speed: 12
  • Maximum Cog: 52T
  • Minimum Cog: 10T
  • RD Capacity: 42T


No reviews yet

Add yours

Keep in touch

Don’t worry, we won’t spam

Your cart — 0

You cart is currently empty


Please accept cookies to help us improve this website Is this OK? Yes No More on cookies »