And for the just in case, the derailleur body features replaceable outer and inner parallelogram links, skid plates, and a tool-free threaded cage assembly, making it the most rebuildable derailleur SRAM has ever built. At the heart of the system is a sleek and sturdy forged aluminum DUB crankset, with a signature silver T-Type chainring equipped with removable bash guards. Shifting under load is a signature of Eagle Transmission, and this is made possible on 90 with an XS-1275 T-Type cassette that features full X-Sync technology, and a premium double-click T-Type Actuation mechanical shifter. For those inclined to DIY, mechanical Eagle Trans-mission has a revolutionary simple four step setup procedure: Prepare. Hang. Tighten. Route. Featuring no limit screws, no b-tension, and no guesswork. Built to take you as far as your imagination and body will allow, Eagle 90 Transmission provides riders with an unparalleled ride experience.

• Sleek and sturdy forged aluminum Eagle 90 DUB crankset, with a signature silver T-Type chainring equipped with removable bash guards
• 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 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

Ordinary shift cable. Extraordinary everything else.

 

First, SRAM delivered the dream of the perfect mountain bike shift. Now they’re delivering the dream of ultimate performance for the mechanical mountain bike transmission too. This is Eagle 90 Mechanical Transmission. The world’s first mechanical groupsets to use a Full Mount interface instead of a derailleur hanger. The first to let you shift anywhere, under absolute power, without compromising or compensating. It’s the world’s first mechanical system with incredibly easy “prepare, hang, tighten” installation, no adjustment screws needed. Rebuildable. Reliable. Affordable. Mechanical Eagle 90 Transmission is the dream, delivered.

 

 

Crank it up. Or down.

 

Eagle 90 cranksets unique design is forged from aluminum for robustness and dependability, at arm lengths in 5mm increments. Like the feel of spinning big circles? Choose longer crankarms. Want to minimize pedal strikes on a bike with a low-slung BB, or change up your balance, choose from new shorter crank arm options.

Tough and robust

 

Hangerless Interface and Full Mount give the Eagle 90 Transmission derailleur a remarkably strong attachment, clamping around both sides of the frame itself and eliminating the need for a hanger. This super strong connection eliminates variance and improper adjustment across frame designs. It also eliminates hanger failures and allows the derailleur to rotate backward in the case of an impact.

Game-changing rebuildability

 

The Eagle 90 derailleur is so durable that you’ll hopefully never need to rebuild it. But if it becomes necessary, it’s the most rebuildable SRAM derailleur ever. And all it takes is minutes to rebuild it, with three basic tools. Rebuild kits and skid plates can be found easily. All to help keep your Eagle 90 derailleur on the trails for a lifetime.

Mechanical Shifters

 

Eagle 90 Transmission mechanical shifters combine decades of ergonomic refinement, delivering a positive mechanical shift. A new architecture routes cables parallel to the bar for pairing perfectly with stealth routed SRAM brakes. For riders who appreciate the satisfying tactility of the mechanical shift, this is love at first click.

GX Eagle T-Type Cassette

 

The GX Eagle T-Type XS-1275 cassette is a key reason why Eagle 90 T-Type Transmission offers incredible inboard and outboard shifting performance under load. Thanks to its full X-SYNC design, the harder you pedal, the better it shifts. The nickel plating delivers top-tier durability as well as a quiet shift experience. Featuring 55mm chainline compatibility for a more moderate chain angle, longer wear, and improved precision. It’s 520% range has optimized gear steps featuring larger 38 and 44-teeth cogs. With the clearly marked “Setup Cog”, installation is both simple and foolproof.