SRAM announce RED eTap AXS, a 12-speed wireless road groupset

SRAM today unveiled their latest road groupset, RED eTap AXS. The RED eTap AXS groupset features a 12-speed cassette controlled by an improved eTap AXS electronic-wireless control system with motorised shifting on the front and rear derailleurs.

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The SRAM RED eTap AXS Disc groupset with Quarq power meter chainring set. A rim brake groupset is also available.

 

A new gearing


While 12-speed and eTap AXS are both cutting edge developments, it's the new gear that goes against most against road groupset traditions. Traditionally an 11 tooth sprocket was the smallest on road cassettes but the RED 12-speed cassette goes as small as 10 tooth. This smaller sprocket allowed SRAM to reduce the size of the chainrings compared to standard 11-speed chainrings, while still offering an extended range at both the top and bottom end of the gearing. The reason for shrinking the chainrings, smoother gear progression when shifting.

 

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SRAM RED eTap AXS crankset cassette 1.JPG

 

Smaller chainrings, wider cassettes

 

The 2x RED chainring gearing options now include 50/37, 48/35, and 46/33 which replace the traditional 53/39, 52/36 and 50/34 respectively. The RED single chainring options range from 36 tooth up to 46 tooth, with the aero chainrings topping 48 and 50 tooth. The 12-speed RED cassette is available in three variations, 10-26, 10-28 and 10-33.

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Fewer steps

 

SRAM explains that it made an effort to reduce the number of steps in any given gear change. The pay-off is a smoother shifting experience with less fluctuation in cadence when up or downshifting. As mentioned, they reduced the size of the RED chainrings to create smaller jumps but they also paid close attention to creating smaller steps on the RED cassettes. The 10-26 and 10-28 cassettes boast 7 single tooth steps (See the chart below). That said, there is a considerably big 5 tooth jump from 28 to 33 on the widest range cassette offered. Granted that this particular gear is designed as a bailout option for gravel riders on steep slopes.

 

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SRAM RED ETap AXS new mid range gear ratio is a 48-35 chainring and 10-28 cassette combination.

 

The chart below compares the RED cassette gear spread compared to traditional 11-speed cassette configurations:

 

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We're going to have to come to grips with the idea of smaller chainring sizes but the pay off is a wider range and smaller jumps in shifting, which SRAM believes will noticeably improve the experience of changing gears.

 

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Chain management with Orbit fluid clutch


The RED eTap AXS rear derailleur employs an all-new chain retention system to reduce the likelihood of the chain becoming dislodged. Instead of the friction clutch system seen on mountain bike derailleurs (and some road derailleurs), SRAM's new Orbit chain management uses a silicone fluid damper system to reduce chain bounce and derailleur cage movement. The advantage the Orbit system over the friction clutch is that there is no added resistance on the derailleur under slow or light movements, like shifting gears. While the faster, harsher movements associated with chain bounce are resisted. It is good to learn that the Orbit system will require no servicing.

 

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The RED eTap AXS derailleur features a single design with the Orbit system standard across 2x and 1x configurations. This also means that one derailleur design (cage length) is compatible across all gearing combinations.

 

One-by


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SRAM RED 42T and 48T aero cranksets.

Yes, SRAM is doing a 1x specific RED eTAP AXS groupset. As mentioned above, the single chainring sizes range from 36T to 46T (in even-numbered progression, of course). While some riders may employ the single chainring groupset on the road, SRAM is also looking to provide versatility to the ever-expanding needs of cyclists, with those exploring off-road firming in mind.

 

There is also be an aerodynamic package to accommodate time trialists and triathletes which includes the option of a smaller, more easily integrated eTap BlipBox. The disc-like aerodynamic chainrings are available in larger 50T and 48T sizes.

 

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What is AXS?


AXS (pronounced "access" for accessibility) promises integration between SRAM's bicycle components, smartphones, sensors, and bike computers. AXS provides this broad compatibility of devices by supporting eTAP, Bluetooth, and ANT+. In addition, all AXS enable components will talk to each other.

 

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Switching it up


SRAM's new AXS wireless system is not defined by riding types. It's happy to chop and change as the riders see fits. All components with the AXS label will be able to communicate and function with each other. This means that the mountain bike Eagle AXS parts, and even the Reverb AXS dropper post, will work with RED eTap AXS road components.

 

But there are some mechanical barriers, however. The cassette, rear derailleur, and chain must come from the same groupset. For example, you might want to build a gravel bike with an Eagle AXS derailleur, cassette, and chain using RED eTap shifters on drops. The eTap shifters can then control the Eagle AXS derailleur. You can even throw in a Reverb AXS dropper seat post which can be activated using the eTap shifters.

 

Customizing


The AXS App allows for an even deeper level of personalisation through your smartphone. From the app, you can change the behaviour of the components and controls, get maintenance reminders, update the firmware, see battery status. The App is available on both Android and iOS.

 

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Does this groupset introduce any new requirements?


The RED crankset is designed to be used with a DUB road bottom bracket. The DUB bottom bracket is compatible with a number of existing bottom bracket standards, including BSA, BB30, PF30, BBRIGHT, PF30A, 386, and PF86.5. This is a move that SRAM has already made on the mountain bike side.

 

The 12-speed RED cassette requires an XDR ("XD Road") driver body to mount to the hub. This is a standard that Zipp has been offering for a number of years but it has not seen much adoption, until now. The XDR interface is designed specifically for road hub applications and is 1.85mm longer than XD driver bodies used for SRAM mountain bike cassettes. XDR drivers are compatible with XD cassettes with the use of a 1.85mm spacer. The XDR driver body is an open standard for any hub manufacturers to apply.

 

Groupset Weights


SRAM RED eTap AXS groupset weights.png

 

 

For a bunch more details on SRAM RED eTap AXS, please see the press pack provided by SRAM below.

 

Press Release: SRAM RED eTap AXS


Always in the right gear


Road bikes are faster and more capable than ever, and riders are expanding what’s possible with drop bar bikes. X-Range offers wider range, more useful and smoother gear progression, as well as smarter shift settings—enabled by AXS.

 

Quiet, secure, and smooth


On tarmac or gravel, 1x or 2x, eTap AXS gives a quiet, secure, and smooth ride. Thanks to Orbit chain management and a unique Flattop chain, you’ll ride more confidently and efficiently than ever—no matter the terrain.

 

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Easily personalized


Control. Personalize. Monitor. AXS—SRAM’s new bike component integration system—takes eTap wireless shifting to the next level. The SRAM AXS app allows riders to see battery status, change component behaviour, personalize controls, get maintenance reminders, and update the firmware.

 

More aero
A smaller eTap BlipBox easily integrates into aero frames or the new Zipp Vuka Aero bar, improving aerodynamics and allowing for a super sleek look.

 

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A new power paradigm
By integrating a Quarq DZero power meter into our chainrings, we made power measurement more affordable and accessible—and lighter, too.

 

Beyond road
AXS allows you to mix and match Road and MTB components. Dropper post with a drop bar groupset? No problem.

 

SRAM RED eTap AXS Front Derailleur


The SRAM RED eTap AXS front derailleur leverages our advancements with X-Range gearing. The derailleur design carves out space for wide rear-tire clearance, making it a perfect fit for modern riding. And the shifting is quick and precise.

 

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  • AXS enabled for easy personalization
  • Elegant and streamlined form for more rear-tire clearance
  • SRAM Yaw trimless cage technology with an optimized cage profile
  • for new SRAM RED front chainring combinations
  • The most responsive, quick, and precise front shifting to date
  • Compatible with existing eTap batteries

SRAM RED eTap AXS Rear Derailleur


The heart of the connected cadre. The SRAM RED eTap AXS rear derailleur is AXS enabled for easy personalization and designed for both 1x and 2x systems. Advanced chain management keeps it silent and secure no matter the terrain. The derailleur also comes with faster pulleys, bearings, motors and signals, improving speed in every way.

 

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  • SRAM AXS enabled for easy personalization
  • Orbit chain management technology keeps drivetrain quiet and secure
  • A single rear derailleur for all gearing combinations, including 1x and 2x
  • Improved motor and signal travel for faster shifting
  • Larger X-SYNC pulleys and ceramic bearings for increased durability and efficiency
  • Compatible with existing eTap batteries

SRAM RED Chain


The all-new SRAM RED chain was developed from the ground up. The unique link shape allows the chain to be narrower and lighter while increasing strength and providing more space between the outer plates of the chain and the cogs on either side.

 

Result: a quieter chain with faster, more precise shifts.

 

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  • Flattop technology enables a narrower chain with quieter operation
  • and increased strength and durability
  • Hard Chrome plated inner link plates and rollers for reduced wear
  • and prolonged life
  • HollowPin construction for increased strength and efficiency
  • Requires new Flattop PowerLock

SRAM RED XG-1290 Cassette


The workhorse of X-Range gearing. The SRAM RED XG-1290 cassette progresses fluidly and quickly through a wider range
of gears. It’s specifically designed for wireless electronic shifting and the one-piece design offers you the best in weight savings.

 

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  • Updated design for smoother and faster shifting
  • More gradual gear progression between cogs—at least five
  • one-tooth jumps
  • 10-tooth start helps provide a wider gearing range
  • Designed to work with an XDR driver body
  • One-piece machined steel X-Dome design for weight savings
  • All Zipp wheels starting from 2012 are XDR ready

SRAM RED eTap AXS HRD Shift-Brake System


Fully wireless electronic shifting. Fully hydraulic disc braking. The SRAM RED eTap AXS HRD shift-brake system is the future. And the future is custom. AXS enabled and easily personalized for hand size and reach, this is the best shifting and braking experience—for all riders.

 

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  • AXS enabled for easy personalization
  • Simple and intuitive eTap shift logic
  • Personalize for your hands and preferences using Contact Point Adjustment and separate Reach Adjust with HydroHC brake platform
  • Newly textured shift paddles and hoods for a better feel
  • Two ports for Blips on each lever
  • Bleeding Edge technology for easy and clean brake bleeds
  • Available in flat mount and post mount caliper options
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SRAM RED eTap Shift-Brake lever


Award-winning eTap shift logic, now with the connectivity of AXS. The SRAM RED eTap shift-brake levers build on this foundation while integrating our newest technologies. And it’s easily personalized, from shifting sequences to reach.

 

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  • AXS enabled for easy personalization
  • Simple and intuitive eTap shift logic
  • Customizable fit with Reach Adjust
  • Two ports for Blips on each lever
  • Large SRAM eTap paddles provide positive controls for rider input
  • For use with mechanical rim brakes

SRAM eTap AXS Blipbox


Significantly smaller, the SRAM eTap AXS BlipBox is now easier to integrate—mounting inside a stem faceplate cap, feed box or frame. It’s also AXS enabled, for easy personalization. Simple, intuitive, aero.

 

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  • Replaces standard drop bar shift levers
  • Simple and intuitive eTap shift logic
  • AXS enabled for easy personalization
  • Limitless aero configurations
  • Two ports per side for Blips and Clics
  • Fits the included optional stem mount
  • Compatible with existing eTap Blips and Clics
  • Mounts inside stem faceplate cap, feed box or frame (See user manual for details.)

SRAM RED AXS Power Meter


The SRAM RED AXS power meter breaks with tradition—and breaks through to new levels of performance. We re-engineered road gearing: reducing front chainring size and adding more range to the rear cassette. We also maintained a 13-tooth delta on all chainring pairs, ensuring precise shifting for any setup. This results in more useful gearing and better shifting across all configurations. Our power meters are also designed with Quarq DZero power measurement into crankset. Welcome to the pinnacle of the power meter.

 

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  • X-Range gearing technology gives you more range and a smoother gear progression, so you’re always in the right gear
  • Power readings are accurate within +/-1.5% and aren’t affected by climate conditions during a ride
  • Power Balance measures left and right legs separately
  • Improved front shifting performance for crisp and accurate front shifts
  • Unique chainring shape results in a lighter weight, stiffer, more durable crankset
  • Integrated chainring design significantly reduces weight
  • DUB bottom bracket adds durability, simplicity and broad compatibility

SRAM RED 1 AXS Power Meter


In certain disciplines, the single-ring drivetrain reigns supreme. Championing simplicity, strength, and durability, the SRAM RED 1 AXS™ power meter meets the demands of triathletes, time trialists, and cyclocross racers. The power meter features improved aerodynamics thanks to direct mount aero chainrings with fully integrated power, and the tighter gearing range is perfect for racing and areas with flatter terrain.

 

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  • Single-ring drivetrain simplifies functionality
  • 48 and 50t variants have fully integrated power into a direct mount aero chainring, 36-46t variants have spider-based power
  • Chainrings can be easily changed without requiring recalibration of the power meter
  • Power readings are accurate within +/-1.5% and aren’t affected by climate conditions during a ride
  • Power Balance measures left and right legs separately
  • SRAM X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain control
  • Laser-etched chainring finish is more durable
  • DUB bottom bracket adds durability, simplicity and broad compatibility

SRAM RED Crankset


The SRAM RED crankset leverages a pivotal design innovation: smaller chainrings and a wider cassette range. This leads to smoother and faster shifting up front and more useful gearing for today’s riders. The new configurations improve cadence and efficiency while also delivering shifts that are crisp, clean and quick—every time.

 

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  • X-Range gearing technology gives you more range and a smoother gear progression, so you’re always in the right gear
  • Improved front shifting performance for crisp and accurate front shifts
  • Unique chainring design results in a lighter weight, stiffer, more durable crankset
  • DUB bottom bracket adds durability, simplicity and broad compatibility
  • Power upgradeable

SRAM RED 1 Crankset


Triathlon. Time Trial. Cyclocross. Some disciplines are made for 1x. And while our X-Range 2x set up has integrated much of the simplicity of a 1x system, there are still times when a single ring is best. The SRAM RED 1 crankset offers the most demanding racers the right mix of features—aerodynamics, durability, and simplicity.

 

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  • Single-ring drivetrain simplifies functionality and reduces weight
  • 48 and 50t variants feature direct mount aero chainrings for better aerodynamics
  • Non-aero chainrings can be installed with a single tool, making gearing changes a breeze
  • SRAM X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain control
  • Laser-etched chainring finish is more durable
  • DUB bottom bracket adds durability, simplicity and broad compatibility
  • Can be upgraded to a power meter

SRAM CenterLine XR (CLX-R) Rotor


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Designed specifically for road riding, the SRAM CenterLine XR (CLX-R) rotor is the perfect complement to a new SRAM eTap AXS drivetrain.
  • Streamlined form optimized for road use
  • CenterLine track offers quiet brake operation
  • Designed to match eTap AXS components
  • Rounded edges make for easier wheel installs and are UCI-compliant

SRAM RED Brakeset


The SRAM RED brakeset improves on all fronts: it’s lighter, more aerodynamic, and leverages more braking power. What’s more, it features broader tire clearance. A classic made modern.
  • AeroLink arm amplifies braking power while reducing frontal area
  • Lighter, aero pad retainers carry SwissStop Flash Pro pads standard
  • Aero design extends to the shape of the indexed four-position quick release
  • Wider clearance for modern tires and wheelsets (up to 28c)
  • Updated finish to match new SRAM RED eTap AXS
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Technologies

 

AXS
AXS is SRAM’s new bike component integration system that connects electronic bicycle components and software. The SRAM AXS App allows riders to see battery status, change component behaviour, personalize controls, get maintenance reminders, and update firmware.

 

Flattop
To enable X-Range gearing technology, we developed a narrower chain. The unique link shape of Flattop technology not only allowed for a wider gear range, but also results in quieter drivetrain operation and increased chain strength and durability.

 

DUB
The relationship between bottom bracket spindle and bearing is the core of DUB technology. It’s where stiffness meets durability. We took it a step beyond conventional thinking and made everything simpler—better integrating the relationship between chainring, crank, spindle, and bottom bracket. It’s this approach to developing a complete system that equals better drivetrain performance.

 

BSA, BB30, PF30, BBRIGHT, PF30A, 386, PF86.5

 

XDR
The XDR driver body is a universal mounting system for cassettes that incorporate cogs with fewer than 11 teeth. It allows for lighter and more versatile drivetrains without requiring new rear axle standards, cassette tools or hub redesigns. The XDR interface is 1.85mm longer than XD and is designed for road hub applications. XDR driver bodies are compatible with all XD cassettes when the cassette is installed with a 1.85mm spacer.

Orbit

 

Orbit technology is an innovative new form of derailleur motion control. It utilizes silicone fluid as part of an elegant and ultra-lightweight damper system. Compared to a standard friction clutch system, Orbit technology places no additional resistance on the rear derailleur’s spring when under slow or light movement. This means easier shifting and rear wheel removal.

 

And while riding, the fluid damper reduces chain bounce. It’s rock-solid reliability for both 1x and 2x systems.

 

X-Range
Road bikes are faster and more capable than ever before, and riders are expanding what’s possible with drop bar bikes. X-Range is gearing for today’s road riding. We completely reimagined road gearing for wider range, more useful and smoother gear progression, as well as smarter shift settings—enabled by AXS. With X-Range, you’re always in the right gear.

 

DZero
Quarq’s next-generation DZero power meter platform is named for the DØ Experiment, one of science’s most accurate and innovative projects to detect subatomic particles moving at the speed of light.

 

With a new measurement circuit, a revised strain gauge design, improved accuracy throughout the pedal stroke, and software advances, DZero represent the state of the art in power meter technology.

 

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27 Comments

shaper, Feb 06 2019 05:37

Nice !!

thisismyotherbike, Feb 06 2019 05:56

Can one use "AXS enabled for easy personalization" to set up sequential shifting for a 2x12 groupset, effectively turning it into a 1x18? (no use running the cross-chaining combinations)

 

That to me was the only shortcoming of Etap - which Shimano offered on the latest Di2 as Synchro Shifting.  Turns your 2x11 into a 1x16, automatically choosing the correct chainring/cog combo to give you the next ratio in an efficient chainline.  No need to think about being in the correct chainring, you simply shift up/down and the system does the rest.

thisismyotherbike, Feb 06 2019 07:37

Answered by Ray as usual

MDJ, Feb 06 2019 10:02

Looks very cool, nice to see them pushing the technology forward. Now about that pricing ...

shaper, Feb 07 2019 07:08

Pricing here https://www.bikerada...d-review-52441/

 

2 x Rim £3,159

2 x HRD £3,349

Furbz, Feb 07 2019 07:25

USD4300 for the disc with power meter.

 

this does look superb though.

i love my current Etap.

Schnavel, Feb 07 2019 08:57

SRAM have just gotten this right! 

 

This groupset looks amazing, ticks all the right boxes, including the crazy price tag!

 

Hopefully they release a Force Etap.. (where can I hand in my money?)

DieselnDust, Feb 07 2019 09:15

must have!

'Dale, Feb 07 2019 12:29

Thoe engineering geeks

Geniuses

 

For the South African Randela holder, yeah, it'll dent the plastic card oraait.

Nibali, Feb 07 2019 12:35

Can one use "AXS enabled for easy personalization" to set up sequential shifting for a 2x12 groupset, effectively turning it into a 1x18? (no use running the cross-chaining combinations)

 

That to me was the only shortcoming of Etap - which Shimano offered on the latest Di2 as Synchro Shifting.  Turns your 2x11 into a 1x16, automatically choosing the correct chainring/cog combo to give you the next ratio in an efficient chainline.  No need to think about being in the correct chainring, you simply shift up/down and the system does the rest.

 

They have two options - sequential and compensating. Check the Cycling news article:

 

"You can assign the groupset to work in one of two semi-automated ways. Firstly, there’s sequential; when you activate the next available gear it will automatically actuate the front derailleur to keep the ratio change even between shifts, and therefore keep your cadence steady.

Secondly, there’s compensating; this smooths out gear shifts, so when you change the front ring up or down, it compensates at the rear derailleur, moving either one or two cogs to keep your gear progression even and your cadence steady."

http://www.cyclingne...axs-hrd-review/

gummibear, Feb 07 2019 12:37

Thoe engineering geeks

Geniuses

 

For the South African Randela holder, yeah, it'll dent the plastic card oraait.

 

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gummibear, Feb 07 2019 12:38

€11500 for the Venge and €11000 for the Tarmacemoji85.pngemoji85.pngemoji15.png

The gears are silent,the shifting is precise and looks greatemoji6.pngemoji106.png

The Venge is to drool over thoughemoji1786.png emoji106.png
 
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gummibear, Feb 07 2019 12:39

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gummibear, Feb 07 2019 12:39

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gummibear, Feb 07 2019 12:40

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gummibear, Feb 07 2019 12:40

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gummibear, Feb 07 2019 12:41

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gummibear, Feb 07 2019 12:41

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gummibear, Feb 07 2019 12:41

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gummibear, Feb 07 2019 12:42

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gummibear, Feb 07 2019 12:42

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stringbean, Feb 08 2019 06:58

Just not so keen on the disposable crank set tho.The blades and PM all built into one so basically if you need blades it’s a whole new crank baby

PeterF, Feb 08 2019 08:07

Just not so keen on the disposable crank set tho.The blades and PM all built into one so basically if you need blades it’s a whole new crank baby

I don't believe this is true based on the following statement in the article :- "Chainrings can be easily changed without requiring recalibration of the power meter".

Spoke101, Feb 08 2019 09:36

Just not so keen on the disposable crank set tho.The blades and PM all built into one so basically if you need blades it’s a whole new crank baby

I really hope SRAM haven't been that stupid. It sounds like something Shimano would do!

PeterF, Feb 08 2019 09:41

I really hope SRAM haven't been that stupid. It sounds like something Shimano would do!

No they are not, they use direct mount chainrings.