"SRAM RED Rear Derailleur (RD-RED-E-E1). Lighter, faster and more capable than ever, the Force AXS rear derailleur does it all in style. Covering cassette ranges from 10-28T up to 10-36T, this wireless wonder has a new, lighter cage and a larger pulley wheel to increase drivetrain efficiency, and an Orbit fluid damper to keep everything in place over the rough stuff. One derailleur ready for 1x or 2x, on road or off.
 
FEATURES
Orbit chain management technology keeps the drivetrain quiet and secure
AXS enabled for easy setup, personalization, and reliability
16 g lighter than previous generation
Compatible with both 1x and 2x drivetrains
Compatible with cassettes from 10-28T to 10-36T
Larger X-SYNC pulleys for increased efficiency
Compatible with existing AXS batteries"
 
- SRAM