12 x 1 speeds / mountain bike Offers greater capacity and delivers crisp, reliable shifting X-Horizon design allows the derailleur to move horizontally to reduce the force required to shift and eliminate unintentional shifts Lower X-Sync 14T pulley Roller Bearing Clutch Type 3 technology with a smoother torque curve for...
11 x 1-speed / mountain bike
X-Horizon straight-parallelogram design with horizontal movement reduces the force required to shift and improves drivetrain performance
Outer cage in aluminum and inner cage in aluminum
X-Sync 12T jockey wheels
Roller Bearing Clutch technology
Cage Lock technology
220 g
Wireless eTap electronic shift logic for intuitive shifting, easy setup and rock-solid reliability Compatible with 1x and 2x drivetrains The derailleur for a max 36T sprocket is compatible with 10-28, 10-30, 10-33 and 10-36 cassettes SRAM AXS connectivity for easy system customization Perfect chain management ensures reliable, quiet drivetrain operation...
Full-mount design (UDH frame required)
T-Type compatibility
Most robust mechanical derailleur
Replaceable wear plates, outer and inner parallelogram links, cage or cage assembly
The most rebuildable derailleur in the Eagle drivetrain ecosystem
Type T cable actuation ratio
SRAM model ID: RD-90-A1
* Fast, stable shifting even under high load * Shimano Synchronised Shift * Shimano Shadow RD construction * Low-profile rear derailleur design, less likely to be damaged in a crash * Maintains a compact, clean look * Compatible with cogs up to 46T
* Road derailleur with Shadow+ clutch technology for increased chain retention* Compatible with Dura-Ace Di2 and Ultegra Di2 shifters* Ideal for CX and gravel bikes* Available only with GS cage* Max front difference: 16T* Total capacity: 39T* Compatible with 11-28 to 11-34 cassettes* Weight: 248 g
Updated with a SHIMANO SHADOW RD design, the SHIMANO ULTEGRA 8000 rear derailleur offers a sleek appearance and optimal shifting performance. The RD-8050 DI2 rear derailleur delivers the digital precision of shifting and SHIMANO’s Synchro-Shift system.
* Shimano Shadow RD construction* Low-profile rear derailleur design, less likely to be damaged in a crash* Shimano Synchronised Shift technology and system communication with the front derailleur* SS: compatible with 11-25 to 11-30 cassettes* GS: compatible with 11-28 to 11-34 cassettes* Weight: 242g (SS), 249g (GS)
* Stable shifting performance* Shimano Shadow RD construction* Low-profile rear derailleur design, less likely to be damaged in a crash* Compatible with cogs up to 30T
10-speed / mountain bike
Direct cable entry
Système Exact Actuation 1:1
Carbon cage
Titanium spring and hardware
Sealed ceramic bearings
36T capacity
181 g (medium cage)