At the launch, the Eagle AXS electronic wireless shifting parts were still officially unofficial pre-production samples, so the weights weren’t accurate enough to share. Now that we have our own sets of both the Eagle AXS XX1 and X01 groups in, we threw them on the scale before mounting everything for our first rides on home trails. Following are the actual weights, then installation notes for anyone upgrading on a DIY scheme…
What’s in the box?
Presentation is everything, so they say, and more so when you’re dropping up to $2,000 for a complete group, or $1,000 for the electronic bits. SRAM doesn’t disappoint, providing everything you need to install it (except a chain breaker) inside the box for a complete drivetrain. And it’s a nice box, with all the parts organized and kept safe. Plus, they continue to create great installation and service videos to walk you through the installation. Here’s what it looks like layer by layer:
The charger and USB cable are hidden under the chain. The included mini tool is a great size, and it’s become my travel tool for it’s compact size while still including all the things I need for basic on-bike repairs.
SRAM Eagle AXS XX1 actual weights
Weights for the parts are:
- 175mm XX1 crankarms with chainring installation bolts: 363g
- Crankarm boots: 12g
- 34t Eagle direct mount chainring: 63g
- Combined total: 438g
- Eagle 10-50 cassette: 364g
- Chain with quicklinks, full length: 263g
- Rear derailleur (w/o battery): 350g
- eTap/AXS battery: 25g
- Combined total: 375g (battery is the same across all SRAM AXS/eTap parts)
- Shifter pod with coin cell battery installed: 70g
- Standalone mount: 12g
- Pressfit30 DUB bottom bracket: 68g
- BSA Threaded DUB bottom bracket: 73g
- Crankarm spindle spacers: 3g
SRAM Eagle AXS X01 actual weights
- 175mm crankarms with 32t chainring: 463g (+25g*)
- Rear derailleur (w/o the 25g battery): 363g (+13g)
- 10-51 cassette: 357g (-7g)
- Shifter pod with coin cell battery installed: 71g (+1g)
- Mounting clamp: 12g (–)
Reverb AXS actual weights
- 30.9 with 150mm travel: 622g (647g w/ battery)
- 31.6 with 170mm travel: 676g (701g w/ battery)
SRAM Eagle AXS installation notes

How to set up the Eagle AXS app
- First, hold down the AXS button on whichever component you want to be the “Master”. For my bike, I chose the rear derailleur.
- Once that component’s light is blinking slowly, press and hold the AXS button on its shifter until the light on the derailleur blinks quickly, then release.
- Do NOT press the AXS button on the rear derailleur yet, it needs to stay “open” to communicating with other components. You have about 30 seconds before it times out and closes this pairing session.
- Press and hold the AXS button on the Reverb until the the light on the derailleur blinks quickly, then release.
- Press and hold the AXS button on the Reverb’s remote until the the light on the derailleur blinks quickly, then release.
- Now you have all four components paired under the “Master” rear derailleur.
- Press the rear derailleur’s AXS button to “close” the pairing session.
- Open the AXS app and turn Bluetooth on and you should see all of the components grouped together with your rear derailleur shown as the “Master” (photo above, left).
- Click “Add To Bike” and create a new bike or select one you’ve already created. All of those components will now be paired to this bike.