Welcome to Eagle Transmission

Eagle Transmission drops a seismic shift on what it means to shift a mountain bike. It simplifies, strengthens, and extends lifespan to new limits. It uses no derailleur hanger or adjustment screws and lets you shift flawlessly under maximum power. Welcome to the dream made real.

Through a series of videos and articles, we’ll cover the basics of your Eagle Transmission, from trail-ready tech tips, to harnessing the potential of infinite personalization. Read on to get the most from your new ride.

RIDE ESSENTIALS

STEP 1: BATTERIES ARE EASY

Check your battery status.
An LED will flash on your derailleur and controller every time you shift, indicating the battery status of each component. You can also press the AXS button on each component to check the status.

• GREEN = More than 25% of battery charge remaining
• RED = Between 10% and 25% of battery charge remaining
• FLASHING RED = Less than 10% of battery charge remaining

Charge your battery.
AXS batteries take an hour to charge and last for approximately 60 hours of riding time, meaning most riders need to charge roughly once a month. To preserve battery life, AXS components go to sleep when the bike is stationary. Shake it to wake it, or just grab it and go.

VIEW MANUAL

MONITOR AXS BATTERY LIFE

CHARGE AXS BATTERIES

STEP 2: PAIRING IS PAINLESS

Pairing introduces your components to each other with a wireless handshake, so they form a secure and seamless group. If your system is set up and shifting well, it’s already paired.

TECH TIP: Pairing a complete AXS system takes seconds. Also using Reverb AXS? Pair your derailleur, controllers, and seatpost together into a single system for the most customization options.

DERAILLEUR + POD CONTROLLER

DERAILLEUR + POD CONTROLLERS + REVERB

STEP 3: CHAIN LENGTH & SETUP KEY CALCULATOR

Eagle Transmission derailleurs have no adjustment screws—just a few simple steps for a perfect setup. Every bike model and chainring size combination requires a defined chain length, Setup Key position, and Setup Cog. Find these specifications for your bike in the Chain Length Guide, a database of all Eagle Transmission-compatible models, found below and in the SRAM AXS app.

Proper setup is essential to extending the lifetime of your Eagle Transmission, so even if you purchased your bike from a shop or straight from the factory, we recommend checking your setup before you ride.

TECH TIP: If you change your chainring size or adjust your bike's geometry with a flip-chip, you'll need to verify your new settings in the Chain Length Guide. If any settings change, complete the derailleur setup procedure again.

CALCULATE NOW

STEP 4: CLEAN IS FAST, AND LASTS

To maximize drivetrain lifespan and ensure the quietest performance—especially on E-MTBs—we recommend cleaning and lubricating Eagle Transmission after every muddy, dusty, and creek-crossing kinda ride. A regularly cleaned and lubricated drivetrain can significantly outlast an unmaintained one, as dirt and grime trapped on a dirty drivetrain will accelerate wear and cause noise.

Cleaning Guide