Sram Eagle 90 Transmission Groupset

The new mechanical Sram Eagle 90 mountain bike and e-bike drivetrain with the XS 1270 cassette for HG freehub bodies.

The Transmission Full Mount rear derailleurs are only suitable for frames with UDH specification (interface without a derailleur hanger); the rear derailleur cannot be fitted to frames with conventional derailleur hangers.

Contents of the Sram Eagle 90 Transmission AXS eTap group:

• SRAM Eagle 90 Transmission rear derailleur, RD-90-A1
• SRAM Eagle 90 Transmission shifter, Single Click SL-90-A1 or Double Click SL-90-PA-A1
• SRAM Eagle 90 Transmission DUB Wide T-Type crankset, FC-90-A1
• SRAM Eagle 90 Transmission T-Type chainring with Bushguard, 32 teeth
• SRAM Eagle Transmission T-Type XS 1270 12-speed cassette, 10-52 teeth for HG freehub body CS-XS-1270-A1
• Sram Eagle 70 Transmission T-Type Chain 126 links incl. link, CN-TTYP-70-A1

Eagle 90 Transmission groupset:

mechanical shifting at its best. Eagle 90 is a dream come true … and much more besides. It features the same full-mount rear derailleur architecture as its AXS Transmission siblings, making it undoubtedly extremely robust. And just in case, the outer and inner parallelogram links, the skid plates and the tool-free removable cage assembly on the rear derailleur body can all be replaced. This makes it the most serviceable rear derailleur we have ever built. A key element of the system is the sleek and sturdy DUB crankset made from forged aluminium, featuring its T-Type chainring in Signature Silver and interchangeable bashguards. Another special feature of the Eagle Transmission is its shifting performance under load, which on the Eagle 90 is only made possible by the XS-1270 T-Type cassette with its full X-Sync technology. For anyone who likes to tinker with their bike themselves, the Eagle Transmission can be installed in a revolutionary simple setup process comprising just 4 steps. Prepare. Attach. Tighten. Route the shift cable and outer housing. It requires no limit screws, no wrap-around angle screw or any other guesswork. Built to take you as far as your imagination and your body allow, the Eagle 90 Transmission offers the rider an unrivalled experience.

Sram Eagle 90 Transmission rear derailleur, RD-90-A1:

The Eagle 90 Transmission rear derailleur is the definitive answer to just how good a mechanical rear derailleur can be. It features a completely new T-Type cable ratio, delivering the most precise and crispest gear changes ever – every time! The Eagle 90 utilises the same full-mount design as its electronic counterparts, making it the most rigid mechanical rear derailleur we have ever built. Not only is it robust, but the derailleur body also features replaceable outer and inner parallelogram links, skid plates and a tool-free removable cage assembly, making it our most serviceable derailleur in the Eagle Transmission ecosystem.

UDH, Universal Derailleur Hanger, Interface:

UDH stands for Universal Derailleur Hanger and is a standard for derailleur hangers that unifies the multitude of existing standards. The aim of the UDH is to reduce the complexity of finding replacement derailleur hangers for bikes by using a uniform design. Sram UDH rear derailleurs are mounted directly onto the frame without a derailleur hanger. This guarantees maximum torsional stiffness and always ensures the perfect position relative to the cassette. Of course, it is essential that your frame has a UDH derailleur hanger or the UDH interface.

Sram Egale 90 Transmission Double Click 12-speed shift lever, SL-70-A1:

There is nothing better than the tactile feel and the satisfying click when shifting mechanically with the Eagle Transmission. After decades of ergonomic refinement, the shifting feel is superb. The Eagle 70 shifter, mounted parallel to the handlebars, is perfectly paired with the SRAM Stealth brakes and our mechanical dropper lever, creating the cleanest mechanical cockpit on a mountain bike.

Sram Eagle 90 Transmission DUB Wide crankset, FC-90-A1:

The new Eagle 90 crankset is an elegant, robust response to the growing demand for durable and aesthetically pleasing components. And with availability extending to shorter lengths of 155 mm and 160 mm, riders have greater freedom to build their bike to their own specifications. The Eagle 90 crankset is compatible with 8-hole chainrings and features a silver T-Type chainring made from embossed steel with optional bashguards for durability and protection on the trail.

Sram Eagle 90 Transmission Chainring:

The stamped steel chainring for maximum durability, with two bashguards. The Eagle 90 chainrings are fitted with an 8-bolt pattern and are compatible with all MTB cranksets featuring this mounting.

Sram GX Eagle Transmission Cassette, CS-XS-1275-A1:

The T-Type cassette is one of the main reasons why the Eagle Transmission offers incredible shifting performance under load. Thanks to its X-SYNC design, the harder you pedal, the better it shifts. The nickel coating ensures first-class durability and quiet shifting. 55 mm chainline for a lower chain angle, less wear and greater precision. The 520% gear range features optimised gear spacing with larger 38- and 44-tooth sprockets. Thanks to the clearly marked setup sprocket, installation is child’s play and absolutely secure. The cassette features a so-called PinDome design for gears 1–8 and a one-piece MINI-CLUSTER for gears 9–12.

Sram XD Driver Body XD

allows the use of a 10-tooth sprocket as the smallest sprocket and offers an improved engagement surface with the cassette. Only compatible with rear wheels featuring the special XD freehub body

Sram Eagle 90 Transmission Flattop Chain:

Description Eagle Transmission is the first fully integrated and interdependent system of its kind. The X0 Eagle Transmission T-Type Flattop Chain is much more than just a chain. It has been specifically developed to optimise the Eagle Transmission and allows you to shift whenever you want. Its unique flat-top design makes it the strongest chain we have ever manufactured. Just as importantly, it enhances the look of any superbike. We care about the details. It features an X0-specific Dark Polar finish and a PVD coating for incredible corrosion and wear resistance. Fully approved for e-MTBs with solid rivets.

SRAM DUB Axle and Bottom Bracket System:

The DUB version of the SRAM cranks is suitable for BSA threaded, PressFit BB92, PressFit 30 and BB30 bottom bracket shells. You can find the matching bottom brackets further down in the text. The axles have a diameter of 29 mm and a length of 113 mm. Axle play is adjustable via a preloader. The SRAM DUB cranksets have a completely proprietary standard and are only compatible with DUB bottom brackets, not with other standards or bottom brackets.

Herstellerinformation: SRAM, 1000 W Fulton Market #4, 60607 Chicago, Illinois, United States, http://www.sram.com | Contact EU: SRAM Europe Sales and Services B.V., Paasbosweg 16, 3862 ZS Nijkerk, Netherlands, https://www.sram.com