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Welcome To The SRAM AXS™ APP

Qalvin BLE has been discontinued. In order to continue providing our customers with the best experience possible, we are migrating Qalvin BLE users over to the SRAM AXS™ App. Use the SRAM AXS™ App for:

  • SRAM RED and Force eTap AXS Groupsets and Power Meters
  • XX1 Eagle AXS Groupsets and Power Meters
  • Quarq TyreWiz
  • PowerTap G3 Hubs
  • PowerTap P1 and P2 Pedals
  • Quarq DZero and DFour Power Meters (all BLE compatible models)

Control. Personalize. Monitor.

The SRAM AXS™ App is a centralized place to control, personalize, and monitor SRAM AXS™ connected components across the SRAM family. Effortlessly connect your Quarq or PowerTap power meter and enjoy MagicZero calibration, free firmware updates, low battery messages, device personalization and more. Welcome to your digital bike garage.

Download the SRAM AXS™ App today!

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Quarq’s Mix-&-Match Guide

We’ve created a simplified step-by-step guide for selecting the best power meter for your bike. If you have more questions, you can complete the Quarq Ride Assessment and our team will be in contact with you.

Getting Started With 10- & 11-Speed Power Meters

To build a DZero DUB power meter, first choose the correct DZero DUB spider, the correct DZero crank lengths, and the appropriate SRAM DUB bottom bracket for your bike.
You can determine the bolt circumference diameter of your SRAM chainring by looking where this image is circled in red.

The DZero DUB power meter spider is designed to fit with most 10- and 11-speed chainrings and is compatible with road, triathlon, and gravel bikes. Follow these 3 steps to get started:

  1. Choose DZero DUB 110 or 130 BCD for any 10- or 11-speed chainring.
  2. Choose the appropriate length of compatible Quarq DZero DUB crankset.
  3. Choose a SRAM DUB bottom bracket if there is not already one on your bike.

Click here to download the DZero DUB guide

Getting Started With The Shimano Dura-Ace® R9100

To build a DFour DUB power meter, first choose the correct DZero DUB spider, the correct DZero crank lengths, and the appropriate SRAM DUB bottom bracket for your bike.

The DFour DUB power meter spider is designed for the Shimano Dura-Ace® R9100. Also compatible with Ultegra® R8000 and 105® R7000 chainrings but it will not match aesthetically.

If you are riding with this groupset, follow these 3 steps to get started:

  1. Choose DFour DUB power meter.
  2. Choose the appropriate length of compatible Quarq DZero DUB crankset.
  3. Choose a SRAM DUB bottom bracket if there is not already one on your bike.

Click here to download the DFour DUB guide

Please note that DZero DUB and DFour DUB power meter spiders MUST be paired to Quarq DZero DUB cranks, and Quarq DZero DUB crankset MUST be paired to SRAM DUB bottom bracket.

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Dial In The Ride Of Your Life

A mountain biker takes on a turn using Quarq Shockwiz to measure mountain bike suspension and Quarq TyreWiz to read the mountain bike tire psi; mountain bike tyre pressure, mountain bike gear

There is something satisfyingly refreshing about riding over crunchy fall leaves as you power through a turn on your favorite trail. Crisp autumn air bites your skin. The season is changing. Make sure your bike is ready to take on the changing temperatures and trail conditions that come with it. Get dialed in for the ride of your life.

Tire pressure is one of the simplest changes you can make to your ride but the results you’ll see are not small at all. Getting the right tire pressure will not only preserve the life of your tires; it can impact the comfort of your ride more that frame and wheel choice combined. Finding the right tire pressure is no longer an elusive and time-consuming task. AddingTyreWiz to your mountain bike gives you the tools you need to easily achieve optimal tire pressure. This real time tire pressure sensor monitors air pressure in real-time and relays the data to a cycling computer or app, providing you with personalized recommendations and pressure alerts.

Adding power to your mountain bike is a great way to improve your strength, endurance, and speed. The SRAM XX1 EagleDUB power meter brings the accuracy and durability of the Quarq power meter line to the world of mountain biking, giving you the tools you need to reach new personal records and maximize your gains. The broad compatibility of the line means finding the right fit for your bike is as easy as picking your favorite trail.

Mountain bike suspension is becoming more customizable, but that doesn’t mean it needs to be more complicated. ShockWiz is a suspension tuning system for air-sprung mountain bikes that takes the guess work out of finding your suspension’s sweet spot. Get automated tuning recommendations, a shock turning score, and dial in the ride of your life. ShockWiz is designed of all riders and riding styles.

Quarq Tyrewiz is used to check bike tire psi. It is good for mountain bike tyre pressure, road bike tire psi and gives recommendations based on a wide range of factors including rider weight.
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SRAM Tandem Team Powers Their Way To Course Record At Leadville 100

SRAM Tandem team Strictly Business took first place and set a course record at the Leadville 100 with a bike outfitted with SRAM bike components and Quarq power meters

SRAM team James Meyer and Nate Keck broke the Leadville tandem course record this weekend, setting a new mark at 7:46:04 and knocking 28 minutes off the 8:14:11 ride set by Roca Roja Rollers in 2018.

Breaking records and tackling 103 miles on a bicycle built for two requires strategy, communication, and a bike that is up to the task. Meyer and Keck chose Ventana’s El Conquistador de Montañas to power through the grueling climbs as they raced to the finish line.

Scroll through the gallery below for equipment breakdown and ride analysis.

SRAM Quarq cycling power meters placed on a tandem bike,  SRAM XX1 Quarq power meter configured with a connect iQ to allow for bicycle power monitoring, SRAM XX1 Quarq power meter configured with a connect iQ to allow for bicycle power monitoring
Top: Ventana El Conquistador de Montañas: a fitting name for a Leadville machine. Empty weight: 44lb 3oz
Bottom Left: Captain crank is a bone stock SRAM XX1 Quarq power meter. The Garmin computers were configured with a Connect iQ datafield to allow both power meters to be monitored by both Captain and Stoker. No slacking off!
Bottom Right: The drive-side timing chain allows for the use of standard SRAM Eagle carbon cranks. The Quarq power meter is custom machined to mount two chainrings. The Captain’s drive power flows from the timing chain and chainring to the 32T drive ring, isolating the captain power output. This allows the stoker power meter to measure the stoker power only.
Left: SRAM Eagle AXS rear derailleur handles the shifting. GX cassette for extra durability with double the normal power. The Leadville course demanded 1858 shifts on race day. 
Center:  Integrated TyreWiz monitored the nominal 27psi front and rear in the 2.8” Specialized Fastrack GRID tires. Gauge tire pressure increased by 2.5 psi on top of Columbine due to the reduced air pressure at 12,400 ft and a bit of warm sunshine.
Right: The team rolled on a stock Zipp Moto wheelset. Tandems are not nimble machines, making descending a pick-a-line and hang-on sort of operation. Tires, wheels and suspension take a serious pounding. 

Top Left: RockShox Lyrik fork shorted to 120mm for proper frame geometry and more front-end stiffness. 200psi and zero tokens.
Bottom Left: SRAM Code RSC calipers with 200mm rotors handle the stopping. Brake discs started the day silver but ended the day ‘rainbow.’
Right: Somebody get these guys a ShockWiz, stat!   RockShox Monarch plus RC3 at 270psi
Left: Another SRAM Code RSC calipers with 200mm rotors in the rear.   Gold Jagwire hose rounds out the package.
Top Right: SRAM AXS controllers configured for roadie style ‘eTap’ shifting logic. Bar ends and Togs provide climbing and semi-aero positions for the 103 miles of Leadville terrain.
Bottom Right: Stoker gets the road drop bars treatment. Keep it narrow for better aero and reduce leverage. Stokers should pedal, not steer.
Left: Stoker gets assigned pacing duties. He can check in on progress every hour or two.
Right Top: A rare flat stretch on Columbine
Right Bottom: The 2019 Tandem Podium 1st Place: SRAM’s Strictly Business at 7:46:04 (course record) 2nd Place: QD Racing at 8:19:53 (third fastest tandem time ever) 3rd Place: Team Doza at 9:55:04 (Leadville PR for Captain and Stoker)

Gearing chart made through SRAM AXS app connected to Quarq power meter
Gearing was a 32T front ring pair with the GX Eagle 10-50T cassette. The 10T cog got the most raw ride time with nearly 1hr 40m of use. The 36 minutes in the 50T was key in the highest effort sections & allowed the team to clean the ultra-steep Powerline climb and ultra-high altitude Columbine goat trail. (The only dab of the day was on the short ‘Brutal Bill’ pitch. The Stoker contends this was due to Captain error.)

The team averaged a combined 380 watts for the day. Leadville has 5 major climbs. Keeping the effort even for the full day was key. Average power on the climbs: -St. Kevins: 586 -Sugarloaf: 519 -Columbine: 464 -Powerline: 435 -Carter Summit: 482 Final effort was Captain at 77kg, 230 NP, 3.0 W/kg and Stoker at 68kg, 210 NP, 3.1 W/kg.