SRAM XX1 Eagle® Power Meter


The SRAM XX1 Eagle Power Meter unites Quarq’s DZero power meter platform with CARBON TUNED crank arms for robust, intuitive power measurement in the lightest ever chassis. The DZero platform embodies 10 years of Quarq’s technology advances and adds new features such as dual Bluetooth low energy and ANT+ wireless data transfer, and the Qalvin BLE app. The companion X-SYNC 2 chainrings are designed specifically for Eagle chains and drivetrains. SRAM’s Eagle groupset and the XX1 Eagle Power Meter are a winning combination for mountain bikers who want to soar.Built hand-in-hand with the XX1 drivetrain – highest performance, integrated look

  • 168Q CARBON TUNED crank arms – extreme stiffness and light weight.
  • Bluetooth low energy technology and ANT+ wireless data transfer.
  • AxCad – no cadence magnet required.
  • 10K Temperature Compensation.
  • Battery – CR2032, 200-hour battery life, change without tools.
  • OmniCal – swap chainrings without affecting accuracy.
  • Power Balance.
  • IPX7 waterproof rating.
  • Accuracy – within 1.5%, measuring both legs.
  • Free firmware upgrades with the Qalvin BLE mobile app.
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USD: $1129
Euro: €979
Euro MSRP includes VAT

*Maximum Suggested Retail Price

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Specifications for SRAM XX1 Eagle® Power Meter

Arm MaterialCarbon crank arms with CNC machined AL spider
Weight511/512g - Conventional/Boost (175mm GXP, no BB or chainrings included)
Available Arm Lengths170mm, 175mm
Bottom BracketGXP, Press Fit GXP, BB30, Press Fit 30, BBright, BB386EVO, BB30A, PF30A
ChainringsRequires an X-SYNC 2™ or X-SYNC™ 104 BCD chainring.
Battery TypeCR2032 – over 300 hours of riding time
Technology Highlight(s)X-SYNC™, BB30, PressFit 30, GXP®, PressFit GXP®
Wireless TechnologyANT+, Bluetooth low energy technology



Besides serious weight savings, this bottom bracket means narrow Q-factor, more ankle clearance, greater bearing durability and stronger crank construction. 

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GXP’s Gutter Seal design cuts friction and weight—improving both feel and performance.

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A variant of the external GXP bottom bracket, PressFit cuts weight by up to 40 grams and eases installation by allowing you to press the bearing cups into the frame instead of threading them. It requires no change to the crank spindle length and diameter.

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Pressfit 30™

This is a new design led by SRAM. It’s all the best from BB30 and Press-Fit bottom brackets in one captivating package. This bottom bracket is designed for 30mm spindle cranksets. The key difference with PressFit 30 is how the bearings are fitted into the frame. Bearings are housed in nylon cups which will be pressed into the frames bottom bracket shell. PressFit 30 will feature an integrated seal, pre-assembled into the cups, to further prolong bearing life. Frames will need a 46mm inner-diameter bottom bracket shell to accommodate this system. PressFit 30 for road will require a 68mm wide shell while PressFit 30 for MTB will require a 73mm wide shell. Advantages: Huge weight savings, narrow Q-factor, more ankle clearance, greater bearing durability, stiffer/stronger crank construction, simple installation. Allows for larger diameter frame tubes increasing frame stiffness. Drawbacks: Still searching.

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SRAM X-SYNC™ 1x chain rings provide the highest level of performance and durability. The SRAM X-SYNC™ tall square teeth edges engage the chain earlier than traditional triangle shaped teeth. The sharp and narrow tooth profile, as well as rounded chamfer edges, help manage a deflected chain. To provide the best possible performance in muddy conditions, the X-SYNC™ chain rings have been designed with mud-clearing recesses for the inner chain links and rollers. Engineered in Germany, X-SYNC™ rings are an integral part of the SRAM 1x™ drivetrain.

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Documents Available for SRAM XX1 Eagle® Power Meter

See more documents available for SRAM MTB products.

SRAM Warranty (589.9 KB, PDF)

29 Pages Updated May 3, 2019



Industry Reviews

Tested: Ten Months On SRAM XX1

"In conclusion, it’s still the same old drivetrain system we have had since the late 1800s, but XX1 is its biggest evolutionary step forward in a long time. It is simple, silent, reliable and rather resilient to real world use. All things you don’t normally expect from a boutique drivetrain. In short, I would find it hard to go back to anything else now.”

by Seb Kemp,, December 1, 2013
SRAM XX1 Quarq Power Meter | Enduro Magazine

"The QUARQ is one of the most accurate on the market.”

“After 460 km of muddy and wet off-road riding, the QUARQ has performed flawlessly, giving instant and reliable real-time power data direct to Trev’s Garmin Edge 500.”

“strong washing with a hose has not caused any problems; even on the muddiest and wettest of rides, the recording has been faultless.”

“Trev is still on the original CR2032 battery (which promises 300 hours of riding time).”


by Trev Worsey,, August 21, 2015
SRAM RISE 60, XX1 Quarq, Guide Ultimate with RockShox RS-1 featured on Huffington Post

Huffington Post's Max Gladwell recently completed the Point-to-Point 80-mile Singletrack race in Utah focused on reviewing the new SRAM RISE 60 Wheels, SRAM Guide Ultimate brakes, SRAM XX1 Quarq equipped drive train and RockShox RS-1. In nearly 8 hours of non-stop racing that descends and ascends over 10,000 feet ranging from 7k to almost 10k feet he gave much praise to our products for getting him through.

by Max Gladwell,, September 21, 2015
SRAM 1x11 drivetrain | long-term test | Enduro Magazine

The German Enduro Magazine published a long-term test about the SRAM 1x11 drivetrain. With each of these group sets having ticked off several thousand kilometers on their test fleet, they thought it was time to see how they were faring. The 1x11 drivetrains have been out on all terrains for serious testing - from the Bavarian mountains to the flowing trails around Stuttgart, and not forgetting the filthy wet lines of Scotland

by Christoph Bayer,, September 24, 2015