The heart of the Eagle 90 system is its Full Mount derailleur design—clamping directly to both sides of the frame to eliminate the need for a traditional hanger. This creates a tough, consistent connection that stays aligned even after impact. Built for long-term reliability, the derailleur features replaceable inner and outer links, bash guards, and a tool-free cage assembly—easy to service and designed to last.

For riders on SRAM or Brose drive units, the forged aluminium crankset is tuned to match your setup perfectly. A neat “Gap Cap” ensures seamless integration between the crank and chainring, and crank arm lengths are available in 160mm, 165mm, or 170mm. A solid clip-on guard offers added protection where you need it most.

The groupset includes the XS-1275 10-52T cassette, built with X-SYNC technology to deliver precise shifts even when you're pushing hard. The single-click mechanical shifter is shaped for comfort, routes cables neatly for a clean cockpit, and comes with a textured aluminium lever for tactile feedback with every shift.

Setup is fast and simple with SRAM’s four-step process—prepare, hang, tighten, route. There’s no need to adjust limit screws or fine-tune b-tension, so you’ll be trail-ready quicker than ever.

Key Features

• Hangerless Interface – UDH frame compatibility only
• Black and silver finish with durable construction
• SRAM/Brose-specific crankset offset with “Gap Cap” for smooth integration
• Forged aluminium crank arms in 160mm, 165mm, and 170mm lengths, includes clip-on guard
• 34T 104BCD variant available without crank arms for use with other drive units
• Stealth-routed Eagle 90 shifter with MMX brake compatibility and tidy hose/housing clip
• Single-click mechanical shift lever – built for E-MTB use
• XS-1275 cassette (10-52T) with full X-SYNC tooth profile for consistent shifting under load
• Eagle 90 Full Mount derailleur – most rebuildable SRAM derailleur to date
• GX Eagle Transmission Flattop chain – solid pins and fully E-MTB approved

SRAM Eagle Mechanical Transmission Drivetrain Review

For riders who enjoy the feeling of a mechanical shift but still want the latest in drivetrain tech, the Eagle 90 DUB Groupset delivers. Built tough for E-MTB power, it’s simple to set up, easy to maintain, and built to keep pace with wherever the trail leads.

Occasionally, without notice, manufacturers change product design and/or specifications.