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SRAM EAGLE TRANSSION, the last revolution in mountain cycling

SRAM EAGLE TRANSSION, the last revolution in mountain cycling

SRAM has revolutionized the mountain bicycle transmissions market with the launch of the new SAM EAGLE AX Transmission change group. Actually it is not a change group as such, but a new range of transmissions that open a new horizon in regard to the change systems we know so far. SRAM has marked milestones in the past, such as the introduction of the first single -sequate change group, the XX1, and subsequently the SRAM Eagle with its 12 speeds and a range of developments that opened a new horizon in the Mountain Bike. Now the brand surprises again with its latest innovation to Mountain bikes: The SRAM EAGLE AX TRANSSION, a new change group that promises to change the rules of the game. It is a transmission system different from any other marching system in the market. Can you never have to adjust the rear diverter or suffer problems with the change pin? Well, that's just what Sram promises. The SRAM EAGLE TRANSSION Group does not need a change patilla to attach the rear diversion to the bicycle box. And neither are adjustment screws necessary. It is mounted directly to the box. In addition, this system has a flat chain that is thinner and more rigid than traditional chains, which also improves the precision of gearshift. You want to know more? Let's see it in detail.

Main innovations of the SAM EAGLE TRANSSION GROUP

The main innovation of SRAM TRANSMISSION EAGLE GRUPO It is that the rear diversion is fixed directly to the frame instead of a change pin such as the transmission systems we know so far. SRAM says this is the fruit of 8 years of R&D. Then we summarize in 10 points the highlight of this new change group:
  1. There are 3 versions available: XX SL, XX and X0. The first is lighter and faster, the second is more durable and the third is the most affordable.
  2. The rear diversion does not need screws to adjust the tension or the route, so the change is never disagree. Of course, you must pay attention to the length of the chain.
  3. The replacement pieces are interchangeable if any part of breaking, but keep in mind that this system is only compatible with bicycle frames that have a UDH assembly system.
  4. The new exchange buttons, called Pod Controller, are smaller and light and can look at the handlebar or in any brake handle, both right and left. It has two buttons that you can configure to your liking.
  5. The cassettes have been redesigned to eliminate the jump between the penultimate and the last crown, which means that the change of marches will be softer. The cassette of the SRAM XX SL version is the lightest SRAM created so far with only 345 grams of weight. Yes, you have read well, a 12V 10-52 cassette less than 350 grams. Crazy!
  6. The connecting rods have also been redesigned in all available versions, and are lighter than the previous ones.
  7. The Eagle Transmission groups come with quarq potentiometers that measure the power in both legs for the XX SL version, and in the left connecting rod for the XX and X0 versions.
  8. The chains are Flat Top and are lighter thanks to a recess in all links at the top. In this way the friction with the cassette and the plate is lower and the transmission set is less wearing up. They also have fast -use powerlock rapid links.
  9. There are different prices for each of the versions of this transmission system, but the cheapest costs more than many medium ranges bicycles. The most expensive include the potentiometer.
  10. SRAM has also taken the opportunity to launch new brake handles designed to operate with the T-Type Eagle Transmission system.
Let's see below in detail what really attracts the attention of the SAM EAGLE TRANSSION Group: [Captation id = "Attachment_10663" Align = "Alignnone" Width = "900"]SAM EAGLE AX TRANSMISSION DESCISSION (Image: SRAM)[/caption]

The change patilla is eliminated

This new Eagle Transmission change group is different from any other gear change system in the market. After years of development, he arrived to fulfill the dream of the perfect change system. And this transmission does not use change patilla and does not have adjustment screws. It literally does not disappoint. The direct assembly deviation is fixed directly to the bicycle box, which creates a stronger, rigid and stable connection. Thanks to this characteristic, the diversor is always in the right position with respect to the cassette, allowing more precise and fast changes, even under high loads. It is important to keep in mind that these new rear changes of direct assembly will only be compatible with pictures that have the UDH system, which was another of the innovations that SRAM launched a few years ago in their commitment to standardize the transmission assembly system in all The bicycle pictures.

Greater durability thanks to the Flat Top chain

Resistance is another characteristic that SRM has sought to strengthen with this new change group. Mountain bicycles support enormous wear of the transmission consumables due to the nature of the routes that are made in this sport and that expose the components to continuous frictions with earth, sand, mud, dust, pecks of stones that jump, scratches With bushes and roots, etc. And what has SRAM done to reduce this wear in your Eagle Transmission group? Because among other things a new one has introduced each one that uses a technology called "Flat Top". Basically it is a chain that eliminates the cut in the upper part of the links, similar to the chains of the road groups (although it is not compatible with them). With this design the Eagle Transmission chain is thinner and more resistant without losing the necessary strength to transmit the power. The flat chain also avoids direct contact with the cassette's teeth, thus reducing friction and, therefore, transmission wear. [Captation id = "Attachment_10662" Align = "Alignnone" Width = "900"]SAM EAGLE TRANSMISSION CHAINS (Image: SRAM)[/caption]

New cassettes for more progressive tours

The redesign of the cassettes and the connecting rods are also key characteristics of the new SAM Eagle Transmission system. The new cassettes offer a more progressive step, which allows a softer transition between crowns, while the new rods are lighter and are designed to offer maximum efficiency in the strength transfer of the pedaling. SRAM has eliminated the jump between the penultimate and the last crown of the cassette. The range of 10-52 is maintained but including 44 and 38 crowns that accentuate that progressivity. All the group's cassettes use XD nuclei, and highlights the XX SL version, the lightest in the history of SRAM, with only 345 grams of weight.

New change controller controller

The change is completely modular and replaceable and configuring it is simpler than the previous models. Only a Trchacadenas, an 8 mm Allen key and a T25 Torx, and the specific tightening torque are needed. Another improvements that attracts attention is the change controller; The controls are smaller and light and can be mounted on both the right side and the left of the handlebar. If we talk about the version with electronic change, one of the most interesting novelties of this new change group Eagle Ax Transmission is the personalization that allows through the AX application. Each AXS POD Controller has two different buttons, and you can customize what each one does from the app. In this way, you can control the suspension of the rockshox reverb ax fork with the button you want, raise a change with the button you want, and go down with another. In addition, you can choose Infinity or Bridge clamps so that your controls are totally adjustable and that you are like you and only you want. [Captation id = "Attachment_10664" Align = "Alignnone" Width = "900"]SAM EAGLE AXSION CHANGE CHANGE CONSISSION (Image: SRAM)[/caption]

Fundamental questions about the new SAM EAGLE TRANSMISSION CHANGES

So far the innovations and technical novelties that the new SRAM change group brings. From here we will try to answer the fundamental questions that you will surely be asking about the SRAM Eagle Transmission change.

What exactly is the Eagle Transmission?

The SAM EAGLE TRANSSION is an advance in mountain bicycle transmissions technology. The most prominent novelty of this group is the direct change, which is installed directly in the bicycle box, without the need for a change pin. This means that the adjustment is always perfect and does not need additional adjustments.

What are the versions or groups Eagle Transmission that are and what are different?

There are three versions of SAM EAGLE TRANSMISSION GROUPS:
  • XX SL EAGLE: The lightest and top of the range, oriented to the competition cross country.
  • XX EAGLE: A little heavier than the XX SL, but designed for greater durability and resistance. Is designed for use on paths and enduro
  • X0 Eagle: more affordable and versatile, but also heavier than the other two.

What are the advantages of the SAM EAGLE TRANSSION Group?

The SAM Eagle Transmission offers a series of advantages compared to other change systems:
  • Always precise changes, even under high loads.
  • It is not disagreement, the change pin and adjustment screws are dispensed with.
  • Greater durability and wear resistance.
  • Greater compatibility with different pictures and bicycle components.
  • New customization and configuration options.

What are the disadvantages of the SAM EAGLE TRANSSION?

The main disadvantage of the SAM EAGLE TRANSSION Group is its price. We are talking about a transmission system that in its most accessible version has a departure price above 1,300 euros. Another disadvantage is that if you want to update your bicycle by installing this change group you can only do it if the frame is compatible with the UDH direct assembly rear -assembly deviation system. Third, the components of the SAM EAGLE TRANSSION Group are not compatible with the previous SRAM groups.

How much do the different versions of the SAM EAGLE TRANSSION group cost?

Below we indicate the starting prices of the different SAM Eagle Transmission groups in their standard and potentiometer versions:
  • SRAM X0 EAGLE AX E -Bike Transmission: € 1,370 - € 1,550
  • SRAM XX SL EAGLE AX TRANSMISSION: € 2,650 - € 3,250
  • SRAM XX EAGLE AX E -Bike Transmission: € 1,700 - € 2,000
  • SRAM XX EAGLE AX Transmission: € 2,450 - € 2,750


The innovative SAM Eagle Transmission change group promises to mark a before and after in the world of mountain cycling, offering a practical and efficient solution in terms of installation, maintenance and adjustment of their changes. In addition, he advances to his main competitor, Shimano, in establishing the technological paradigm in terms of deviators. The main problem is in the price. It is not a change for all audiences and only the transmission components are worth more than many bicycles, but perhaps it is just a matter of time that the technological transfers of this revolutionary change group end up arriving at the rest of the middle ranges, as happened with Other great technological revolutions of SRAM such as monopathic transmissions and 12V cassettes.
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