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Deliver The Dream.

Eagle Transmission drops a seismic shift on what it means to shift a mountain bike. Built around the universal constant of the wheel axle itself, Eagle Transmission is a radically robust, fully integrated and interdependent transmission available in both wireless and mechanical that literally changes how we ride. It simplifies, strengthens and extends lifespan to new limits. It uses no derailleur hanger or adjustment screws and lets you shift flawlessly under maximum power. Welcome to the dream made real. 
A SRAM XX SL rear derailleur.

XX SL

XX SL leaves nothing left to desire, and nothing left to chance. Because power to weight is everything when flying off the line.

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An XX rear derailleur

XX

This is where imagination, innovation and unprecedented performance meet. The race worthy drivetrain of dreams.

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A SRAM XX SL rear derailleur.

X0

This is for put-up or shut-up riders who don’t have time to wonder about their componentry. Tough, reliable, precise and light, X0 Eagle Transmission is built to help you prove your mettle.

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A GX rear derailleur

GX

GX Eagle Transmission is ready to go toe to toe with anything, perfect shifting that’s unapologetically robust. Forget the old excuses, this is the new people’s champion for all-in, all-day rides. 

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SRAM Eagle 90 Transmission rear derailleur

90

Eagle 90 Transmission delivers the dream of the world’s best mechanical shifting. Crazy robust with ultra simple setup, it also features the most rebuildable derailleur ever. Simply unstoppable.

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SRAM Eagle 70 Transmission rear derailleur

70

Eagle 70 Transmission gives riders radical toughness with reliability, durability, and simplicity to match. Ready for whatever you throw its way, 70 is the group to look for on your new bike.

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Impossible until now

Impossible. Until now.

Enabling Nirvana.

Full Mount / T-Type

Utilizing the widely adopted frame design required for the Universal Derailleur Hanger, the Hangerless Interface allows Eagle Transmission to work around the one universal constant – the center of the rear axle. This opens up the possibility for perfect shifting, eliminates unnecessary parts and allows all other features to work in perfect relationship to this constant.

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Full Mount

Utilizing the lager diameter of the Hangerless Interface, Eagle Transmission mounts to your bike with a super strong, super simple Full Mount design. Full Mount literally clams around both sides of the frame itself and eliminates 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.

T-Type

Welcome to the Eagle Transmission ecosystem of connected components. If it’s a T-Type component, it’s compatible with all other Eagle Transmission T-Type parts, whether AXS or Mechanical. Giving you the ultimate freedom to mix and match. Keep it T-Type, and let your dream builds fly.

BROWSE T-TYPE COMPONENTS

Cassette mapping

Sophisticated Synchronization. With the introduction of X-Sync technology on the cassette, retimed shift routes, and precise derailleur movements - Cassette Mapping allows you to shift when and where you want. AXS derailleurs feature a firmware based shift sequence, while mechanical systems have a designated number of shifter clicks that makes it possible to control the shift, under any load. When a shift is initiated, the derailleur moves into the next position, guiding the chain towards the releasing/receiving cogs - engaging chain rollers on the desired cassette teeth. This creates continuous chain engagement for pure uninterrupted power transfer. With over 44 shifting points across the gear range, strategically located based on common cassette speeds, Cassette Mapping increases shift precision and ensures constant load transfer.

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Give ‘em your max.

All this sophistication and innovation means nothing if it doesn’t increase durability and longevity. Cassette Mapping’s precision makes Eagle Transmission cassettes and the all-new Flattop MTB chains our best shifting and our longest wearing.

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Prepare. Hang. Tighten.

The entire setup procedure for Eagle Transmission AXS is completed in just three simple steps and takes about two minutes. Just prepare, hang, and tighten. Installing a mechanical Eagle Transmission? The process is shared between Eagle 90 and 70, with one additional step to route and tension a standard shift cable. Either way, simply follow the steps and you’re ready to rip.

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Ever dream of never having to adjust your derailleur during set up? It’s here. Eagle Transmission derailleurs have no adjustment screws because they require zero adjustment after setup. All required adjustments now takes place during the Eagle Transmission setup procedure – a very clear process that removes all possibility of setting it up wrong.

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Transcend toughness

Because robustness starts with simplicity, Eagle Transmission has fewer parts and fewer variance for far greater reliability and toughness.

Hangerless Interface.

Hangerless Interface and Full Mount give the Eagle Transmission derailleur a remarkably strong attachment. During prototyping, our engineers would even stand on the derailleur with their full body weight and it would still shift perfectly. Eagle Transmission was over-designed for inevitable impacts and crashes. So you can worry less and rip harder.

Inline Cage

The Eagle Transmission derailleur houses its pulley wheels in what we call our Inline Cage. Oriented to keep the top pulley in perfect alignment with the cassette throughout the entire gear sweep, it also keeps the bottom pulley in an optimum angle with the front chainring. All for superior chain management better longevity.

Magic Wheel

That oversized Inline Cage pulley found on both Eagle XX-SL and Eagle XX Transmission is called the Magic Wheel. Why? Because its outer ring rotates independently from the inner spoked hub. Should a stick become lodged between pulley and cage, Magic Wheel takes over, and your chain can continue threading through the derailleur without a damaging jam or bind. Like magic.

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Add E-MTB power. Experience Auto Shift.

Eagle Powertrain Auto Shift is a made possible by a unique motor algorithm and the system’s integration with Eagle Transmission, allowing for clean automatic shifts to happen while you pedal along naturally.

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E-MTB in full sprint

Want to shift during a 1000-watt surge of power from your E-MTB, while in full sprint? Go for it.

You’re not dreaming

Rebuild, replace, repeat

Take a crash or slam into an immovable object with your Eagle Transmission derailleur, and there’s a better chance than ever that the only damage will be cosmetic. Tough Skid Plates virtually add no weight and deflect to protect, minimizing impact. Found on all derailleurs in the Eagle Transmission Ecosystem.

Rebuild kits

If a replacement part is needed, all T-Type derailleurs have an unmatched level of rebuildability, with modular rebuild kits available right down to the smallest parts.

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Realize your vision

Welcome to infinite personalization
Eagle Transmission mechanical shifter and Eagle AXS Pod shifter

Mechanical

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

AXS

Eagle Transmission AXS Pod Controllers are intuitive, discreet and programmable. Mount on the left or right to match your vibe. Which button shifts up, which one shifts down, which controls your Reverb dropper? It’s all up to you, just configure your way on the AXS app.

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Seamlessly integrate with your existing brake-lever clamp for an elegant way to keep an extremely clean cockpit. The MatchMaker X clamp is MTB’s most versatile single clamp system, mounting mechanical shifters or dropper levers inboard or outboard. For AXS set ups, the Bridge Clamp attachment gives you a greater range of inboard or outboard adjustability for Pod controllers.

The Infinity Clamp gives you an infinite number of mounting configurations for ultimate freedom. With a flippable design and 360-degree adjustability at both the controller mount-point as well as at the handlebar. It’s thinner, more discreet, works independently of your brake lever, and offers a single bolt for further fine-tuning.

profile shot of a MTB rider sliding through some mud

The fantasy is reality.

Easiest to install, most robust and best shift under load is a bold claim, but we aren’t the only ones making it. Reviewed by dozens of trusted publications, Eagle Transmission has been stacking up the awards and winning over tech editors as the highest performance, most durable gear system available for mountain biking. Read the reviews below.
Pinkbike Awards Product of the Year 2023

PRODUCT OF THE YEAR: GX TRANSMISSION

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Design & Innovation Award XX Eagle Transmission

DESIGN & INNOVATION AWARD: XX EAGLE TRANSMISSION

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MTB News - Gold: Most Innovative Product

GOLD: MOST INNOVATIVE PRODUCT

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EMTB News Gold: Best MTB Drivetrain

GOLD: MTB DRIVETRAIN

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Eagle Transmission groupsets

Whether you are upgrading your trusted ride or building your dream bike from the frame up, there is an Eagle Transmission groupset to match your goals.

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