Road AXS and XPLR AXS

Consult sram.com/service whenever a separate manual is referenced in this document.

Read the full warranty policy for your components at sram.com/en/service/warranty.

For information about trademarks used in this manual, visit sram.com/website-terms-of-use.

Download the SRAM AXS app, available for free in the app stores, to create your SRAM account, add your components, and customize your SRAM AXS experience.

Through the app, you will also be able to:

• Connect your components via Bluetooth to the SRAM AXS app.

• Build and personalize multiple bicycle profiles.

• Monitor bicycle performance and readiness.

• Customize component behavior to match your riding style.

• Assign custom actions to your controls.

For component customization within the SRAM AXS app, all AXS components must be paired into a single system. Procedures for pairing multiple systems, such as an AXS seatpost and AXS drivetrain, can be found in the System Pairing section.

For optimal system performance and compatibility make sure you have installed the latest version of the SRAM AXS app and component firmware. Firmware updates are performed through the app.

Click on the icon at the top right corner of the screen to display the color legend and the complete list of tools and supplies for this manual in a scrollable dropdown list.

The colors and symbols featured in this manual correspond to specific actions or procedures. A detailed description for each color and symbol is contained in the dropdown.

Highly specialized tools and supplies are required for the replacement and maintenance of your SRAM components. We recommend that you have a qualified SRAM dealer work on your SRAM components.

1. Remove the battery cover from the battery.

2. Install the battery into the charger. The LED on the charger will turn yellow while charging, and turn green when the battery is fully charged.

3. Press down on the release button.

4. Remove the battery from the charger.

Consult the SRAM Battery and Charger User Manual user manual for charging instructions, battery maintenance, and travel guidelines.

Storage conditions: Temperature from -40°C to 70°C, humidity from 10% to 85%

Operating conditions: Temperature from -10°C to 40°C, humidity from 0% to 100%

Service life: 5 years

1. Open the battery latch.

2. Remove the battery block.

3. Insert the fully charged SRAM battery into the derailleur.

4. Close the battery latch.

SRAM batteries install into the front and rear derailleurs the same way and can be used interchangeably. When installed correctly, the latch will snap into place.

The AXS button has different functions that vary from component to component. Use the table below to help differentiate between the functions. Descriptions of each function can be found in their respective sections.

* = Enable component discoverability in SRAM AXS app

Each AXS system has a primary component that begins and ends the pairing session. Each SRAM AXS component must be paired with the rear derailleur, the primary component. Pairing allows each component to communicate when a shift command is transmitted.

Additional AXS systems can be combined to create one AXS system. To combine AXS systems, begin pairing with any one of the primary components.

1. Rear Derailleur: Begin the pairing session at the rear derailleur. Press and hold the AXS button until the green LED blinks slowly, then release.

The pairing session will time out after 30 seconds of inactivity.

Steps 2-4 can be done in any order.

The LED on the rear derailleur and the component being paired will blink quickly when the component is successfully paired.

2. Front Derailleur: Press and hold the AXS button on the front derailleur until the green LED blinks quickly, then release.

3-4. Press and hold the AXS button on one shifter until the green LED blinks quickly, then release. Repeat on the other shifter.

If a Reverb AXS XPLR is included, pair prior to completing step 5.

5. Press and release the AXS button on the rear derailleur to end the pairing session, or wait 30 seconds for the pairing session to time out. The green LED will stop blinking.

The pairing process does not need to be repeated when batteries are removed and/or replaced.

The pairing process must be repeated if any components are replaced, added, or removed.

Verify the system is paired by shifting the derailleurs in both directions. The shifter LED will blink when a command has been sent, and the derailleur LEDs will blink when a command has been received and executed. If the derailleurs do not respond, repeat the pairing process.

1. Press the left shifter paddle to move the rear derailleur inboard to a larger cog. Press and hold the paddle for multiple shifts.

2. Press the right shifter paddle to move the rear derailleur outboard to a smaller cog. Press and hold the paddle for multiple shifts.

3. Press both shifter paddles simultaneously to move the front derailleur inboard or outboard.

Use the SRAM AXS app to personalize your system's shift logic.

Press and release the AXS button on the rear derailleur once to move the derailleur outboard one position, or double-press to move inboard one position.

Press and release the AXS button on the front derailleur to move the derailleur either inboard or outboard.

Press the Bonus Button, located at the top inboard-side of the shifters, to move the rear derailleur. The default shift logic matches the shifter paddles.

Use the SRAM AXS app to modify the Bonus Buttons shift logic.

The shifter AXS button can be used to enable and disable Enhanced Shifting mode for the system once it has been activated in the SRAM AXS app. Use the SRAM AXS app to personalize your system's shift logic.

Enhanced shifting mode will return to its default 'off' setting if the system is re-paired.

Enable Enhanced Shifting mode by pressing and releasing the right AXS button.

Disable Enhanced Shifting mode by pressing and releasing the left AXS button.

1. Clean the driver body and apply grease to the driver body threads.

2. Install the cassette onto the driver body until it is fully seated and the splines are engaged. Use a tool with a guide pin to tighten the cassette while applying inward pressure to the cassette.

3. Use a torque wrench to tighten the cassette.

Consult the SRAM Road HRD Hose Shortening and Bleed Manual for installing hydraulic brakes with internal hose routing.

1. Use only the SRAM-supplied shifter clamps and bolts.

Apply friction paste to the inner clamping surface when installing on carbon fiber handlebars.

2. Install the shift-brake lever onto the handlebar.

3. With the bike level in the repair stand or on the ground, raise or lower the shifter on the handlebar until the bottom of the molded grooves on the outboard side of the hood cover are aligned parallel to the ground.

4. Next, rotate the shifter so that the edge of the molded grooves on the top, inboard side of the hood cover are aligned 90 degrees to the centerline of the handlebar.

These adjustments will set the shifter to the ideal starting position for ergonomic comfort and control. Adjust to your desired position as needed.

5. Fold the hood cover forward, then tighten the shifter clamp bolt. Roll the hood cover back into position.

¹ If riding styles conflict, it is up to the user to size up or size down based on necessary braking power.

² Road, Gravel, Cyclocross -- Consult the fork or frame manufacturer’s specifications before installing a 140 mm or 180 mm rotor. These rotor sizes have compatibility limitations on many forks and frames.

³ E-bikes -- Consult the appropriate riding style column and select rotor size based on system weight.

1-2. Install the rotor, tapered side first, onto the hub splines.

3. Install the center locking mechanism (not included) over the disc rotor, thread it into the hub, and tighten to the torque specified by the locking mechanism's manufacturer. If using a Zipp lockring, use a Ø44 16-notch external bottom bracket tool to tighten the lockring to 40 N·m (354 in-lb).

1. Align the rotor with the laser-etched markings facing away from the hub and install new, threadlock-prepped rotor bolts.

2. Tighten the rotor bolts one turn in an alternating sequence.

1. Apply grease to the thru axle threads before axle installation.

2. Install the thru axle and wheel according to the manufacturer's instructions.

3. Tighten the thru axle into the dropouts according to the manufacturer's instructions.

XPLR AXS Wheel Change

After installation and setup, you may remove and reinstall the rear wheel as needed. To remove and install the wheel put the derailleur in Open Mode. Before tightening the rear axle bolt, you must release the Cage Mode button and set the derailleur to Ride Mode.

For fork and frame specifications that require a bolt-on bracket, install the bracket in the orientation for your caliper configuration.

1. Remove the pad spacer from the caliper.

2. Consult the document to determine the caliper mounting requirements for your fork, frame, and rotor dimensions.

For fork and frame specifications that require a bolt-on bracket, install the bracket onto the brake caliper in the recommended orientation.

3. Tighten the bolts.

Caliper installation, centering, and torque is the same for all flat and post mount calipers, with or without a bracket, post, or spacer.

1. Loosely install the caliper onto the fork or frame.

2-3. Lightly squeeze (approx. 4 lbs./2 kg) the lever blade repeatedly to advance the caliper pistons to the rotor, then hold the lever blade and lightly tighten the bolts.

4. Check that the brake pads are equally spaced on either side of the rotor.

5-6. Lightly squeeze (approx. 4 lbs) and hold the brake lever, and then tighten the bolts to the torque specified.

If the brake pads rub on the rotor, loosen the caliper bolts and adjust the caliper position. Repeat steps 2-6.

1. Carefully pry the reach adjust cover from the front of the brake lever. Be careful to not damage the tether when removing the cover.

2. Reach Adjust: Use a 2.5 mm hex wrench to rotate the reach adjust counterclockwise to bring the lever closer to the bar, or clockwise to move the lever away from the bar.

The brake lever and shifter paddle adjust together.

3. Install the reach adjust cover into position.

Contact Point Adjustment

1. Pull the hood cover back from the front of the shift lever.

2. To adjust the amount of lever movement before the pads engage the rotor, use a 2.5 mm hex wrench to rotate the contact point adjuster clockwise to increase the lever throw, or counter-clockwise to decrease the lever throw.

There are 4 contact point positions, indicated by 3 clicks when turning the adjuster, with stops at the minimum and maximum lever throw positions.

Do not squeeze the lever while adjusting the contact point adjuster.

3. Pull the hood cover forward into position.

All new brake pads and rotors should be put through a wear-in process called 'bed-in'. The bed-in procedure, which should be performed prior to your first ride, ensures the most consistent and powerful braking feel along with the quietest braking in most riding conditions. The bed-in process heats up the brake pads and rotors, which deposits an even layer of brake pad material (transfer layer) to the braking surface of the rotor. This transfer layer optimizes braking performance. To watch a video of the bed-in procedure, visit: SRAM: Disc Brake Bed-In Procedure.

1. Accelerate the bike to a moderate speed, then firmly apply the brakes until you are at walking speed. Repeat approximately twenty times.

2. Accelerate the bike to a faster speed, then very firmly apply the brakes until you are at walking speed. Repeat approximately ten times.

3. Allow the brakes to cool prior to any additional riding.

4. After the bed-in procedure has been performed, the caliper may need to be re-centered.

Spray isopropyl alcohol on the bottom bracket shell and clean it. The shell should be free of dirt, paint, grease, and metal burrs. For best results, have your frame faced by a professional bicycle mechanic.

1. Apply grease to the inside of the frame shell.

2. Prepare the bottom bracket for installation. Remove the left side cup from the center tube. Remove the left side outer spacer, if applicable. Remove the right side outer spacer from the right side cup.

1. Install the inner non-drive side spacer if indicated by the chart.

2. Use a 12-notch external bottom bracket tool to tighten the non-drive side cup into the frame.

3. Install the left external spacer as indicated by the spacer chart.

4. Install the inner drive side spacer if indicated by the chart.

5. Use a 12-notch external bottom bracket tool to tighten the drive side cup into the frame.

6. Install the right external spacer as indicated by the spacer chart.

DUB BSA Spacer Chart

1. Use a bottom bracket bearing press tool or a headset press to install the left side cup into the non-drive side of the frame according to the tool manufacturer's instructions.

2. Repeat the installation with the right side cup and center tube into the drive side of the frame.

3-4. Install the spacer(s) according to the MTB Crankset and Bottom Bracket table.

DUB PressFit 30 Spacer Chart

DUB BB30 Spacer Chart

DUB PressFit Spacer Chart

The following section is a complete installation guide of the RED XPLR AXS Derailleur. You must complete the installation in the specific sequence.

Installation of the RED XPLR AXS Derailleur consists of the following steps.

1. UDH Removal

2. RED XPLR AXS Derailleur Installation

3. Full Mount Chain Sizing and Installation

Previously installed components may be used in a RED XPLR AXS System if they are compatible and have been correctly installed. Consult the SRAM AXS Components Compatibility Map at sram.com/service for more information.

CAGE MODES

The Cage Mode button is used to position the derailleur cage to the various Cage Modes.

Open Mode: The derailleur cage is fully extended for rear wheel removal and installation.

Setup Mode: The derailleur cage is slightly extended to align the cage with the key line.

Ride Mode: The Cage Mode button is not depressed, and the derailleur cage is unlocked and not extended.

This section covers preparing the chain and derailleur for installation. Do not install the components onto the frame until the next section, "Hang the Components".

Consult the SRAM Full Mount Chain Length Guide or use the SRAM AXS app to determine the chain length for your bicycle based on the chainring size and chainstay length.

SRAM Full Mount Chain Length Guide

If you cannot access the SRAM Full Mount Chain Length Guide or the SRAM AXS app, consult the Chain Length Table section to determine the chain length for your chainring size and chainstay length combination.

1. Count down from 126 to the number of chain links determined by the guide or app.

2. Use an approved chain breaker tool to break the chain at the inner link. Set the chain aside.

* Some bicycles may require a longer than normal aftermarket chain. In some cases adding an extra PowerLock into the system will provide the correct amount of links. Make sure to place the extra PowerLock as far from the connecting PowerLock as possible.

** If using a 114 link Flattop chain countdown accordingly.

3. Rotate the derailleur cage forward until the gear icon on the cage clears the Cage Mode button pin.

4. Press the Cage Mode button to set the derailleur cage to Setup Mode.

The RED AXS XPLR Setup Cog is gear 6 (21T).

5. Press the lever on the right side shifter to shift the derailleur into the fully outboard position. Alternatively, press and release the AXS button on the derailleur to move the derailleur outboard one position at a time until it is fully outboard.

6. Shift the left-hand controller seven times from the full outboard position to position the derailleur at the 21T Setup Cog (gear 6).

Alternatively, double-press the AXS button on the derailleur seven times to move the derailleur inboard until it is in the Setup Cog position.

The UDH must be removed from the frame before derailleur installation.

7. Turn the UDH bolt clockwise.

8. Remove the bolt and washer from the hanger threads.

9. Rotate the UDH hanger backward to unseat the hanger from the pocket.

10. Remove the UDH hanger from the frame.

11. Remove the mount bolt.

12. Remove the bushing frame insert.

Clean the frame to remove any grease or debris.

13. Install the bushing frame insert into the frame.

1. Rotate the knurled ring clockwise until it is touching the knurled ring stop. Make sure the ring stop is between the knurled ring horns.

2. Apply grease to the mount bolt threads and underside of the bolt flange.

3. Install the derailleur with the full mount sliding over the hangerless interface and bushing frame insert.

4. Install and tighten the mount bolt clockwise to snug.

5. Loosen the mount bolt counter-clockwise one full turn.

6. Rotate the derailleur cage forward until the lock icon on the cage clears the Cage Mode button pin.

7. Press the Cage Mode button to set the derailleur cage to Open Mode.

8. Apply grease to the thru axle threads before axle installation.

9. Install the thru axle and wheel according to the manufacturer's instructions.

10. Tighten the axle to snug.

11. Loosen the thru axle counter-clockwise one full turn.

Verify the chain has been cut to the proper size and the derailleur is shifted into the Setup Cog.

E-bikes must be powered off before proceeding.

12. Place the properly sized chain on the 21T setup cog, and route through the derailleur pulleys with the flat edge of the chain facing away from the cassette. Make sure to route the chain between the tab in the cage and the upper pulley.

13. Pull each end of the chain together.

14. Install the PowerLock. Press the PowerLock connector links together.

15. Rotate the derailleur cage forward to release the Cage Mode button from the fully extended position.

16. Reposition the cage so the Cage Mode button locks on the derailleur cage with the gear icon on the cage visible. Press the Cage Mode button to set the derailleur cage to Setup Mode.

If chain link pliers will not be used to install the PowerLock, continue to step 19.

17. Check that the two halves of the PowerLock are aligned and properly engaged.

18. Use chain link pliers to lock the PowerLock.

19. Rotate the crank until the PowerLock is above the chainstay.

20. Check that the two halves of the PowerLock are aligned and engaged.

21. Apply the rear brake (21a) and firmly push the crankarm down (21b) to lock the PowerLock. You should hear and feel the PowerLock click into place.

22. Check the PowerLock by hand to make sure it moves freely.

Before proceeding you must verify the following were completed in the previous sections:

• The rear axle and mount bolt have both been loosened one full turn.

• The derailleur is in the Setup Mode position.

• The chain is on the Setup Cog.

• The PowerLock is closed.

1a. Pull back on the lower cage of the XPLR derailleur to remove slack from the chain.

1b. Continue to pull back while you rotate the crank forward two rotations while confirming the chain stays on the setup cog.

2. Tighten the mount bolt while continuing to pull back (1a) on the lower cage of the derailleur, then release (3).

If there is still slack in the chain after tightening the mount bolt, loosen the mount bolt, then repeat steps 1 and 2.

4. Verify the knurled ring mark is aligned with the mark on the full mount of the derailleur.

If it is not aligned, loosen the axle mount bolt one turn, rotate the knurled ring so that it is touching the knurled ring stop, then repeat steps 1-3.

5. Tighten the rear axle to torque according to the frame or axle manufacturer's instructions.

6. Release the cage from Setup Mode to Ride Mode by rotating the cage forward and then carefully letting it return to the unlocked position.

Optimize derailleur shift performance and eliminate unwanted rasping sounds by fine-tuning the derailleur position with MicroAdjust. MicroAdjust affects derailleur position across all of the cogs. There is no independent adjustment for each cog.

Press and hold the shifter AXS button (1a) while pressing the shift paddle inward (1b). Use the left shifter to adjust the derailleur inboard and improve shifting to an inboard cog. Use the right shifter to adjust the derailleur outboard and improve shifting to an outboard cog.

The rear derailleur may not appear to move. Watch for the LED to blink to confirm the derailleur executed the command.

This completes the system installation. There are no adjustment screws in this system. You must repeat the complete installation procedure if you change the chainring size on your bicycle.

This section covers how to determine the chain length for your chainring size and chainstay length combination for your XPLR AXS system installation. Use the table below when you do not have access to the SRAM Full Mount Chain Length Guide or the SRAM AXS App.

1. Measure the direct distance from the bottom bracket axis to the hub axis to determine the chainstay length (A) in millimeters.

2. Consult the chart below to determine the length of chain links required according to the chainring and chainstay length (A) combination on your bicycle.

Purple Chart Cells: Some bicycles may require more than one aftermarket chain to achieve the required length. Use a second compatible PowerLock to connect the chains and place the PowerLocks as far from each other as possible.

Orange Chart Cells: Use a Standard 45 mm chainline crank with bicycle chainstay lengths less than 415 mm.

3. Count down from 126 to the number of chain links determined by the chart.

Use an approved chain breaker tool to break the chain at the inner link.

** If using a 114 link Flattop chain countdown accordingly.

4. Proceed to the Mount the Chain section in the XPLR AXS System installation manual.

The LED illuminates when a shift is performed. The color of the LED indicates the ride time remaining. Consult the SRAM Battery and Charger User Manual for charging instructions.

The LED on the rear derailleur will blink red and green when a shift has been rejected. Shifts can be rejected when attempting to enter a locked out chainring/cog combination, or when a shift has been requested when the temperature is below -15 °C.

1. Fold the hood cover forward.

2. Use a coin to rotate the battery cover 90° counter-clockwise until it stops.

3. Remove the battery cover and battery.

4. Insert a new CR2032 battery with the positive + sign facing into the cover.

5. Make sure the o-ring on the battery cover is installed correctly in the groove, then insert the battery and battery cover into the hood.

6. Use a coin to rotate the battery cover 90° clockwise until it stops.

7. Roll the hood cover back down.

If your brakes exhibit excessive lever throw or spongy feel, perform the following steps before bleeding the system:

1. Clamp the bicycle into a bicycle work stand.

2. Remove the wheel from the affected caliper.

3. Remove the brake pads. Measure the brake pads for wear. If the pads measure less than the minimum thickness, replace the pads.

4. Re-install the pad retainer bolt.

5a. For road brakes: Install the Piston Massage Spacer or the thicker side of the appropriate pad spacer through the caliper between all pistons.

5b. For MTB brakes: Install the Piston Massage Spacer or two 1.85 mm thick rotors through the caliper between all pistons.

6. Squeeze the brake lever several times until the pistons have advanced and contact the spacing device being used. One piston may move faster than the other; that is okay. Continue to squeeze the lever until the pistons touch the spacer.

7. Remove the Piston Massage Spacer, pad spacer, or two 1.85 mm thick rotors.

8. Use a plastic tire lever to push the pistons back into the caliper bores.

9. Repeat steps 5-8 until the pistons move freely.

10. Remove the spacer and pad retainer bolt from the caliper and reinstall the brake pads.

11. Install the thinner side of a pad spacer between the brake pads.

12. Squeeze the brake lever lightly 5 times (approximately 4 lbs.) until the pads contact the spacer. Remove the spacer.

13. Install the wheel.

14. Loosen the caliper mounting bolts.

15. Lightly squeeze (approximately 4 lbs.) the brake lever several times to position the brake pads to the proper distance from the rotor.

16. Center the caliper on the rotor, and tighten the caliper mounting bolts to the torque specified in the appropriate user manual.

17. Spin the wheel and check the brake function. The pistons should move freely and there should not be excessive brake lever throw.

If the brake lever was squeezed without a pad spacer or rotor installed in the caliper, the pad gap may have been reduced. If this happens the rotor might not have enough clearance in the caliper to rotate without rubbing. Perform this procedure to reset the pad gap:

1. Remove the wheel from the affected caliper.

2. Install the thicker side of a pad spacer between the brake pads.

3. Squeeze the brake lever hard 5 times (approximately 22 lbs/10 kg).

4. Remove the spacer from the caliper, and install the thinner side of a pad spacer between the brake pads.

5. Squeeze the brake lever lightly 5 times (approximately 4 lbs or less).

6. Remove the pad spacer.

7. Re-install the wheel, and re-center the caliper.

After installation and setup, you may remove and reinstall the rear wheel as needed. To remove and install the wheel put the derailleur in Open Mode. Before tightening the rear axle bolt, you must release the Cage Mode button and set the derailleur to Ride Mode.

Remove the battery from the derailleur and install the battery block before service.

1. Turn the mount bolt counter-clockwise and remove it.

2. Remove the bushing frame insert.

3. Remove the knurled ring.

4-5. Install and rotate the knurled ring clockwise until it touches the knurled ring stop. Make sure the ring stop is between the knurled ring horns.

6. Install the bushing frame insert with the flat side facing outboard.

7. Install the mount bolt.

Proceed to the Prepare, Hang, and Tighten sections for derailleur installation and setup.

The XPLR Battery latch is compatible with GX and S1000 Transmission derailleurs. It is not compatible with SRAM Transmission XXSL, XX, and X0 derailleurs.

1. Open the battery latch.

2. Remove the SRAM battery.

3. Pull the latch away from the derailleur to remove it.

4. Install the new battery latch. When installed correctly, the latch will snap into place.

5. Install a SRAM battery into the derailleur.

6. Close the battery latch.

When installed correctly, the latch will snap into place and the LED will flash green once.

Shift the derailleur into the Setup Cog before service.

1. Hold the derailleur body and rotate the cage clockwise until it releases from the p-knuckle.

2. Remove the cage.

3. Install the new cage into the p-knuckle.

Remove the cage from the derailleur body.

1. Remove the pulley bolts.

2. Remove the pulley and spacers.

3. Remove the outer cage.

4. Orient a new pulley as shown. Reinstall the spacers with the flat side facing outward.

5. Install the new pulley and outer cage.

6. Tighten the pulley bolts.

XPLR parallelogram parts are not compatible with SRAM Transmission derailleurs.

Shift the derailleur to the fully outboard position. Remove the battery.

1. Hold the p-knuckle back.

2. Remove the bolts on the lower parallelogram.

3. Remove the upper and lower parallelogram.

4. Hold the p-knuckle back.

5. Install the upper parallelogram.

6. Install the lower parallelogram.

7. Install and tighten the new, threadlock-prepped screws.

♻ For recycling and environmental compliance, please visit sram.com/en/company/about/environmental-policy-and-recycling

Consult your E-Bike Manufacturer for compact and full-size battery recycling information.

Replace the SRAM battery with an authentic SRAM battery only.

Replace the AXS Controller battery with a CR2032 coin cell battery only.

Replace the SRAM power meter battery with a CR2032 coin cell battery only.

Replace the Pedal Sensor battery with a AAA Lithium/Iron Disulfide (Li/FeS2) battery only.

Replace the SRAM or Quarq power meter Battery Sled battery with a AAA Lithium battery only.

Consult the SRAM Battery and Charger User Manual for battery maintenance and specifications.