Mechanical. Now Unstoppable.

Meet the worlds first mechanical drivetrain with Full-Mount durability, rebuildable toughness, and rock-solid shifting under max power. With an easy, foolproof setup and unmatched reliability, Eagle 90 Transmission redefines mechanical shifting for the modern MTB rider.

The Best Shift Under Load. Period.

Power through every shift, no matter the terrain. With X-Sync tooth profiles and 44 optimized shifting points, Eagle 90 delivers precise, smooth gear changes under full load, whether on an E-MTB or a hard-charging trail bike.

Tougher. Smarter. Unstoppable.

Forget bent derailleur hangers! Eagle 90s Full Mount interface anchors directly to the frame at the axle for unmatched strength and precision. Its so strong you could stand on it, yet smart enough to rotate away on impact, allowing for a quick trailside reset so you can keep riding.

Built to Last, Ready to Rebuild

With industry-leading durability, you may never need to rebuild your Eagle 90 derailleur. But if you do, its the easiest to service ever. With just three tools and a few minutes, you can swap all parts and get back on the trail fast. Plus, rebuild kits and skid plates are readily available to keep your drivetrain running for a lifetime.

Effortless Setup, Clean Cockpit

With Eagle 90s “prepare, hang, tighten” process, installation is shockingly simple. Just route and tension the shift cable, and youre ready to rip. Plus, the redesigned Eagle 90 shifter delivers the most satisfying mechanical click yet – sleekly mounted parallel to the bar fora clean, modern cockpit.

Eagle 90 isnt just mechanical shifting, its the next evolution of it.

Eagle 90 Transmission Features:

• Premium double-click Eagle 90 T-Type Actuation mechanical shifter is built with modern shift ergonomics and a premium textured aluminum lever touchpoint
• GX Eagle XS-1275 T-Type Cassette features 10-52t range and full X-SYNC technology for the best inboard and outboard shifting performance under load
• Eagle 90 T-type rear derailleur features the revolutionary Hangerless Interface and Full Mount attachment method that creates a far stronger connection because it grips both sides of the frame (Requires frame with UDH interface)
• Full Mount Eagle 90 derailleur is the most rebuildable Eagle Transmission derailleur, with replaceable B-Knuckle, Inner/Outer Links, Bash Guards, Bushings, Cage, and Cage Assembly
• Includes the proven and reliable GX Eagle Transmission Flattop chain

Specs:

• Derailleur
• Shifter
• XS-1275 Cassette
• XS-1270 Cassette
• GX T-Type Chain

Derailleur

Shifter

XS-1275 Cassette

XS-1270 Cassette

Eagle T-Type Chain