You’ll find the best components from the best brands atEscapa—theSRAM Eagle 90 E-MTB Groupset (SRAM/Bosch ) is the best mechanical drivetrain. Eagle 90 makes your dreams come true—and then some.
With the same Full Mount derailleur architecture as its AXS drivetrain siblings, it’s undeniably rugged. And just in case, the derailleur body features replaceable inner and outer parallelogram links, slide plates, and a tool-free threaded cage assembly—making it the most rebuildable derailleur we’ve ever made. At the heart of the system is an elegant and robust forged aluminum E-MTB chainring, paired with a T-Type chainring specifically designed for the drivetrain. Shifting under load is one of the hallmarks of Eagle Transmission, and this is made possible on the 90 with an XS-1275 T-Type cassette featuring X-Sync technology and a premium T-Type Actuation mechanical derailleur with dual-click operation.
For those with a mechanical bent, the mechanical Eagle Transmission features a revolutionary and simple four-step setup procedure: Prepare. Hang. Tighten. Run. No limit screws, no b-tension, and no guesswork. Built to take you as far as your imagination and your body will allow, the Eagle 90 Transmission provides riders with an unparalleled riding experience.
Features:
UDH mount derailleur, compatible with compatible frames only.
Black and silver finish.
SRAM/Bosch-specific chainring and crank arm variants with “Gap Cap” for a seamless connection between the crank arm and chainring. Forged aluminum crank arms available in lengths of 160 mm, 165 mm, and 170 mm.
36T chainring
The Eagle 90 shifter features a discreet design and is MMX-compatible for a perfect match with SRAM brakes. A clip for routing the shifter/brake hose is included.
The shifter is designed with modern shifting ergonomics and a premium textured aluminum grip.
The black XS-1275 cassette features a 10-52t range and full X-SYNC technology for the best upshift and downshift performance under load.
The Full Mount Eagle 90 rear derailleur is the most serviceable Eagle drivetrain derailleur, with a replaceable B-buckle, inner/outer links, bash guards, hubs, cage, and cage assembly.
It includes a GX Eagle Transmission Flattop chain with solid pins, fully approved for E-MTB use.
