eTap 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 eTap 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. 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. For 2x systems: 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 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.

Consult the eTap AXS BlipBox and Remote Shift Buttons User Manual for aero component instructions.

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. For 2x systems: 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 twice quickly to move inboard one position.

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

For 2x systems, the shifter AXS button can be used to enter and exit 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.

1. 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.

1. Apply grease to the driver body threads.

2. Install the cassette onto the driver body. Ensure the small spline of the cog is aligned with the small spline on the driverbody. 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.

Clean the cassette with biodegradable cleaners only. Rinse thoroughly with water and allow the parts to dry, then lubricate the chain with chain lubricant. Lubricate regularly to extend the chain's service life.

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 and set it to your desired position.

3. Fold the hood cover forward, then tighten the shifter clamp bolt.

Hydraulic brakes: For shift brake levers with hydraulic brakes (A), tighten the shifter clamp bolt to 6 N·m (53 in-lb).

Mechanical brakes: For shift brake levers with mechanical brakes (B), tighten the shifter clamp bolt to 8 N·m (70 in-lb).

Consult the Road Mechanical Shifter and Rim Brakes User Manual for mechanical rim caliper instructions.

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. 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.

1-2. 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).

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. Install the appropriate mounting bracket onto the brake caliper for fork and frame specifications that require a bolt-on bracket.

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.) the lever blade repeatedly to advance the caliper pistons, 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. Reach Adjust: Use a 2.5 mm hex wrench to rotate the reach adjust clockwise to bring the lever closer to the bar, or counterclockwise to move the lever away from the bar.

The brake lever and shifter paddle adjust together.

2. Contact Point Adjustment (select models): To adjust the amount of lever movement before the pads engage the rotor, rotate the contact point adjust clockwise to increase the lever throw, or counterclockwise to decrease the lever throw.

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

Front derailleur installation is for 2x systems only. For 1x systems, continue to Rear Derailleur Installation.

1. Shift the derailleur into the outboard position.

52/39, 54/41, and 56/43 chainrings: Dual Mount front derailleurs are recommended. A braze-on shim may be necessary to allow for proper spacing between the chainring and derailleur, as defined in the Alignment sections.

1. Install the AXS Front Derailleur Set Up Tool into the front derailleur cage, if not installed already.

When installed correctly, the tool will snap into place with the fin and the ledge contacting the derailleur cage.

1. Install the tool and derailleur on the large chainring, bottoming the tool on the chainring teeth.

The front derailleur installation tool is keyed to help with placement on the chainring.

2-3. Rotate the crankset and front derailleur clockwise until the derailleur meets the braze-on tab.

4. Install the derailleur washer and bolt.

5. Make sure the tool is still bottomed on the chainring. While holding the tail of the derailleur cage in place, tighten the derailleur bolt. Verify the derailleur did not move during tightening.

1. Apply friction paste to the clamp.

2. Position the clamp onto the frame.

3 Tighten the clamp bolt enough to keep the clamp from sliding down.

4. Install the tool and derailleur on the large chainring, bottoming the tool on the chainring teeth.

The front derailleur installation tool is keyed to help with placement on the chainring.

5-6. Rotate the crankset and front derailleur forward until the derailleur meets the clamp.

7. Adjust the clamp height as necessary to align it with the derailleur bolt hole.

8. Install and tighten the derailleur bolt.

9. Make sure the tool is still bottomed on the chainring. While holding the derailleur cage in place, tighten the clamp bolt.

Verify the derailleur does not move during tightening.

1. Rotate the crankset counter-clockwise to separate the tool from the derailleur cage.

2. Remove the tool from the derailleur cage.

3. Rotate the front derailleur to align the guide marks on the derailleur to the large chainring.

3.1. *For previously installed derailleurs only: If the guide marks on the derailleur cannot be aligned to the large chainring, adjust the high limit screw (H) to move the guide marks toward the large chainring. As the high limit is adjusted, you may need to rotate the front derailleur to keep the guide marks aligned with the large chainring. Continue to adjust the high limit screw and rotate the derailleur until the guide marks align with the large chainring.

4. Use the AXS button on the front derailleur or the shift paddles to shift the derailleur to the inboard position.

5a-5b. Adjust the low limit screw (L) until the outer cage plate is directly over the large chainring.

6. Measure the space between the tallest tooth of the large chainring and the bottom edge of the outer cage plate. The gap must be 1-2 mm. If it is not, adjust the derailleur until there is 1-2 mm between the outer cage plate and the chainring, and re-tighten the derailleur bolt.

52/39, 54/41, and 56/43 chainrings: Install the braze-on shim if 1-2 mm cannot be attained.

The front derailleur limits will be set after chain installation.

1. Position the front derailleur onto the braze-on, then install the washer and the derailleur bolt.

2. *Tighten the derailleur bolt enough to keep the derailleur from sliding down.

52/39, 54/41, and 56/43 chainrings: Install the derailleur bolt into the lower fixation hole. If the proper height cannot be achieved according to the Alignment section, then repeat steps 1-2 using the higher fixation hole.

The braze-on shim may be necessary if proper setup cannot be achieved using either fixation hole.

1. Apply friction paste to the clamp.

2. Position the clamp onto the frame.

3. *Tighten the clamp bolt enough to keep the clamp from sliding down.

4. Position the front derailleur onto the clamp.

5. Tighten the derailleur bolt.

1. Make sure the derailleur is in the outboard position.

2. Adjust the derailleur so that the tip of the tallest chainring tooth appears within the setup line when viewed directly from the side.

3. Rotate the front derailleur to align the guide marks on the derailleur to the large chainring.

3.1. *For previously installed derailleurs only: If the guide marks on the derailleur cannot be aligned to the large chainring, adjust the high limit screw (H) to move the guide marks toward the large chainring. As the high limit is adjusted, you may need to rotate the front derailleur to keep the guide marks aligned with the large chainring. Continue to adjust the high limit screw and rotate the derailleur until the guide marks align with the large chainring.

4. Use the AXS button on the front derailleur or the shift paddles to shift the derailleur to the inboard position.

5a-5b. Adjust the low limit screw (L) until the outer cage plate is directly over the large chainring.

6. Measure the space between the tallest tooth of the large chainring and the bottom edge of the outer cage plate. The gap must be 1-2 mm. If it is not, adjust the derailleur until there is 1-2 mm between the outer cage plate and the chainring, shift the derailleur outboard, and repeat steps 3-6.

52/39, 54/41, and 56/43 chainrings: Install the braze-on shim if 1-2 mm cannot be attained.

The front derailleur limits will be set after chain installation.

7. Once the final height of the front derailleur is determined and the cage is correctly aligned with the large chainring, tighten the derailleur bolt or clamp bolt. Verify the derailleur does not move during tightening.

8. Shift the derailleur into the outboard position.

The wedge provides additional support for braze-on mounted front derailleurs. The use of a wedge is strongly recommended as it will enhance shifting function and performance.

There are three standard wedge sizes and three wide wedge sizes; pick the wedge that best fits your frame.

1. Place the flat side of each wedge against the front derailleur and slide the wedge forward until it lightly contacts the frame or braze-on. Select the wedge that best fills the gap between the frame or braze-on and the derailleur without moving the derailleur.

1. Loosely install the wedge bolt and the wedge onto the derailleur.

2. Adjust the wedge so the tab contacts the bottom of the derailleur body.

3. Slide the wedge toward the front of the bicycle until it lightly contacts the frame or braze-on.

4. Tighten the wedge bolt until the wedge is snug against the derailleur and will not move.

1. Apply a thin layer of grease to the derailleur hanger threads.

Use a rear derailleur hanger alignment tool to make sure the derailleur hanger is straight.

2. Shift the rear derailleur inboard to the 2nd largest cog. Use the AXS button on the derailleur or the shifter paddles to shift the derailleur.

3. Install the rear derailleur onto the derailleur hanger.

4. Tighten the derailleur bolt.

Align the upper pulley with the center of the 2nd-largest cog by adjusting the rear derailleur:

1a-1b. Press and hold the shifter AXS button (1a) while pressing the shift paddle inward (1b). The left shifter will adjust the derailleur inboard, and the right shifter will adjust the derailleur outboard 0.25 mm.

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

1. Shift the rear derailleur inboard to the largest cog.

The derailleur cage may contact the rear wheel before the chain is installed. This is normal; once the chain is installed, the derailleur cage will no longer contact the wheel.

2. Adjust the low limit screw (L) so that it lightly contacts the inner link of the rear derailleur.

3. Shift the rear derailleur outboard to the smallest cog.

4. Adjust the high limit screw (H) until it lightly touches the inner link of the rear derailleur.

1. Wrap the chain around the large chainring and largest cassette cog with the flat edge facing away from the chainring and cassette.

2. 2x systems: Add one inner link and one outer link where the chain starts to overlap.

2. 1x systems: Add two inner links and two outer links where the chain starts to overlap.

3. Cut the chain.

4. Place the chain onto the smallest cassette cog. Route the chain through the rear derailleur pulleys, and above the tab in the cage.

5. Pull each end of the chain together and install the PLCK-D1 PowerLock.

6. Press the PowerLock connector links together.

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

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

8-9. Apply the rear brake and firmly push the crank arm down to lock the PowerLock. You should hear and feel the PowerLock click into place.

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

1. Shift the rear derailleur inboard to the largest cog.

2. If you have either chain gap adjustment gauge, place the gauge onto the upper pulley. For the dual-sided gauge, place the tool so that the "Max 33T/Max36T" side is up, with the top half of the gauge behind the largest cog.

3. Determine which rear derailleur and cassette you have, then rotate the B-Adjust screw until the appropriate gap between the upper pulley and the tallest teeth of the largest cog is attained, according to the chart above. Remove the tool.

Continue to Front Derailleur Adjustment.

1. Apply a thin layer of grease to the derailleur hanger threads.

Use a rear derailleur hanger alignment tool to make sure the derailleur hanger is straight.

2. Install the rear derailleur onto the derailleur hanger.

3. Tighten the derailleur bolt.

1. Wrap the chain around the large chainring and largest cassette cog with the flat edge facing away from the chainring and cassette.

2. Add two inner links and two outer links where the chain starts to overlap.

3. Cut the chain.

4. Place the chain onto the smallest cassette cog. Route the chain through the rear derailleur pulleys, and above the tab in the cage.

5. Pull each end of the chain together and install the PLCK-D1 PowerLock.

6. Press the PowerLock connector links together.

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

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

8-9. Apply the rear brake and firmly push the crank arm down to lock the PowerLock. You should hear and feel the PowerLock click into place.

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

Shift the chain into the 2nd largest cog. Align the upper pulley with the center of the 2nd-largest cog by adjusting the rear derailleur:

1a-1b. Press and hold the shifter AXS button (1a) while pressing the shift paddle inward (1b). The left shifter will adjust the derailleur inboard, and the right shifter will adjust the derailleur outboard 0.25mm.

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

1. Leave the rear derailleur in the 2nd-largest cog.

2. If you have a dual-sided chain gap adjustment gauge, place the gauge onto the upper pulley so that "XPLR" is up, with the top half of the gauge behind the largest cog.

3. Determine which cassette you have, then rotate the B-Adjust screw until the appropriate gap between the upper pulley and the tallest teeth of the largest cog is attained, according to the chart above. Remove the tool.

Shift the chain onto the second largest rear cog.

1. Determine which cassette you have, then rotate the B-Adjust screw until the appropriate gap between the upper pulley and the tallest teeth of the largest cog is attained, according to the chart above.

1. Shift the rear derailleur inboard to the largest cog.

2. Adjust the low limit screw (L) so that it lightly contacts the inner link of the rear derailleur.

3. Shift the rear derailleur outboard to the smallest cog.

4. Adjust the high limit screw (H) until it lightly touches the inner link of the rear derailleur.

1. Use a rear derailleur hanger alignment tool to make sure the derailleur hanger is straight.

2. Install the rear derailleur onto the derailleur hanger.

3. Tighten the derailleur bolt.

1. Wrap the chain around the large chainring and largest cassette cog with the flat edge facing away from the chainring and cassette.

2. Add two inner links and two outer links where the chain starts to overlap.

3. Cut the chain.

Move the chain to the smallest cassette cog.

4-5. Rotate the derailleur cage forward and press the Cage Lock lock button to lock the derailleur in the extended position.

6. Route the chain through the derailleur pulleys. Make sure to route the chain below the tab in the cage.

7. Pull each end of the chain together and install the PowerLock. Press the PowerLock connector links together.

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

9. Release the Cage Lock by rotating the cage forward then carefully letting it return to the unlocked position.

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

Check that the two halves of the PowerLock are properly aligned.

11-12. Apply the rear brake and firmly push the crank arm down to lock the PowerLock. You should hear and feel the PowerLock click into place.

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

1. Shift the chain into the second largest cog (42T).

2. Snap the chain gap adjustment gauge onto the largest cassette cog (52T or 50T) so the largest cassette cog teeth touch the surface of the gauge in the window cut-out.

3. Rotate the gauge and the cassette until the ledge on the backside of the gauge contacts the upper pulley wheel.

4. Rotate the B-Adjust screw until the center of the upper pulley screw and the tip of the pointer on the chain gap adjustment gauge tool align (step 5). Remove the tool.

1. Shift the chain onto the second largest rear cog.

2. Rotate the B-Adjust screw until the gap between the upper pulley and the tallest teeth of the largest cog is 3 mm.

1. Shift the chain into the 2nd largest cog. Align the pulley wheel with the center of the 2nd largest cog by adjusting the rear derailleur.

Shift the chain into the 2nd largest cog. Align the upper pulley with the center of the 2nd-largest cog by adjusting the rear derailleur:

1a-1b. Press and hold the shifter AXS button (1a) while pressing the shift paddle inward (1b). The left shifter will adjust the derailleur inboard, and the right shifter will adjust the derailleur outboard 0.2 mm.

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

1. Shift the derailleur inboard to the largest cassette cog.

2. Adjust the low limit screw (L) so that it lightly contacts the outer link of the derailleur, then back the screw out a 1/4 turn.

3. Shift the derailleur outboard to the smallest cog.

4. Adjust the high limit screw (H) until it lightly touches the inner link of the derailleur, then back the screw out a 1/4 turn.

Continue to Rear Derailleur Fine Tuning for 1x systems.

Front derailleur adjustment is for 2x systems only. For 1x systems, continue to Rear Derailleur Fine Tuning.

1. Shift the rear derailleur outboard to the smallest cog.

Make sure the front derailleur is in the outboard position, with the chain on the large chainring and the smallest rear cog.

2. Adjust the high limit screw until there is 0.5-1 mm of clearance between the inside of the outer derailleur plate and the chain.

3. Shift the chain to the small chainring and to the largest rear cog.

4. Adjust the low limit screw until there is 0.5-1 mm of clearance between the inside of the inner derailleur plate and the chain.

Optimize rear derailleur shift performance and eliminate unwanted rasping sounds by fine-tuning the rear derailleur position with MicroAdjust.

1a-1b. 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. Each press of the shifter for an Eagle AXS derailleur results in 0.2 mm of adjustment. Each press of the shifter for a 33T/36T or XPLR derailleur results in 0.25 mm of adjustment.

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

1. Shift the rear derailleur inboard to the largest cog.

2. Adjust the low limit screw (L) if it no longer lightly contacts the inner link of the rear derailleur.

Max 33T/36T Derailleurs: With the chain on the largest cog, install the chain gap adjustment gauge.

XPLR Derailleurs: Shift the chain to the 2nd-largest cog, and install the chain gap adjustment gauge.

Eagle Derailleurs: Shift the chain to the 2nd-largest cog, and install the chain gap adjustment gauge.

3. Check that the gap between the upper pulley and the tallest teeth of the largest cog is correct for your cassette size. If it is not, repeat the Chain Gap Adjustment section for your rear derailleur.

4. Shift the chain to the large chainring and the to the smallest rear cog.

5. Adjust the high limit screw (H) if it no longer lightly contacts the inner link of the rear derailleur.

If the chain drops outboard when shifting to the large chainring: With the front derailleur in the outboard position, rotate the high limit screw clockwise 1/8 turn. Repeat until the chain no longer drops from the chainring.

52/39, 54/41, and 56/43 chainrings: If outboard chain drop persists, install (or remove) the braze-on shim and repeat Front Derailleur Installation, then check alignment and adjustment.

If shifting is difficult from the small chainring to the large chainring: With the front derailleur in the outboard position, rotate the high limit screw counter-clockwise 1/8 turn and re-evaluate. Repeat until the chain shifts smoothly from the small chainring to the large chainring.

If the chain drops inboard when shifting to the small chainring: With the front derailleur in the inboard position, rotate the low limit screw clockwise 1/8 turn. Repeat until the chain no longer drops from the chainring.

If shifting is difficult from the large chainring to the small chainring: With the front derailleur in the inboard position, rotate the low limit screw counter-clockwise 1/8 turn and re-evaluate. Repeat until the chain shifts smoothly from the large chainring to the small chainring.

During an outboard shift, the front derailleur will temporarily overshift to allow the chain to move onto the large chainring, then will move inboard to the final position. The largest overshift happens when the rear derailleur is furthest inboard.

The LED illuminates when a shift is performed. The color of the LED indicates the ride time remaining. Consult the SRAM Battery and Charger 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 and the dot on the cover lines up with the dot on the lever body.

7. Roll the hood cover back down.

1. Fold the hood cover forward and remove the three battery hatch screws.

2. Remove the battery cover, gasket, and battery.

3. Install a new CR2032 battery with the positive + sign facing outward. Wipe the gasket with a lint-free rag so it is free of dirt and debris, then install the gasket and battery hatch.

4. Gently tighten the battery hatch screws until they are hand tight.

5. 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.

4. Re-install the pad retainer bolt.

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

5b. For MTB brakes: Install two 1.85 mm rotors through the caliper between all pistons.

6. Squeeze the brake lever several times until the pistons have advanced and contact the pad spacer. 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 pad spacer.

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

9. Repeat steps 4-7 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 there is no improvement in the brake function, proceed to the service manual for your caliper.

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.

If there is still insufficient clearance between the brake pads and rotor after performing the pad gap reset procedure, perform this overnight procedure to reset the retraction distance between the caliper pistons:

1. Remove the wheel from the affected caliper.

2. Install the 3.8 mm (thick side) of an SRAM spacer between the brake pads and remove it without squeezing the brake lever.

3. Install the 2.4 mm (thin side) of an SRAM spacer between the brake pads.

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

5. Allow the system to sit, untouched, for 12-24 hours.

6. Remove the SRAM spacer.

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

We recommend that you periodically clean your electrical components. Use a damp cloth to wipe off any dirt and debris. Clean the components with soap and water only. Rinse thoroughly with water and allow the parts to dry, then lubricate the chain.

B-Bolt Removal

1. Clamp a 5 mm hex in a vise, then install the B-bolt onto the 5 mm hex to hold it in place.

2. Use one pick to prevent the circlip from rotating and use a second pick to expand the circlip and move it out of the groove in the B-bolt and onto the threads of the B-bolt.

Rotate the circlip counter-clockwise to remove it from the B-bolt.

3. Remove the B-washer from the derailleur.

4. Remove the wave spring from the B-bolt.

5. Remove the B-bolt.

B-Bolt Installation

Thoroughly clean all parts before installation.

1. Apply a thin layer of grease to the outer diameter of the B-bolt.

2. Install the B-bolt into the derailleur.

3. Install the wave spring onto the B-bolt.

4. Clamp a 5 mm hex in a vise, then install the B-bolt onto the 5 mm hex to hold it in place.

5. Install the B-washer.

6. Use one pick to prevent the circlip from rotating and use a second pick to expand the circlip and move it off of the threads of the B-bolt and into the groove in the B-bolt.

1. Remove the old upper pulley.

2. Install the spacers with the flat sides facing outward.

3. Orient a new pulley so the etched letter is facing inboard. The upper pulley is marked with an U.

4. Tighten the upper pulley bolt.

5. Remove the old lower pulley.

6. Install the spacers with the flat sides facing outward.

7. Orient a new pulley so the etched letter is facing inboard. The lower pulley is marked with an L.

8. Tighten the lower pulley bolt.

1-2. Remove the old upper pulley.

3. Install the spacers with the flat sides facing outward.

4. Orient a new pulley so the etched letter is facing outboard. The upper pulley is marked with an U.

5. Tighten the upper pulley bolt.

6-7. Remove the old lower pulley.

8. Install the spacers with the flat sides facing outward.

9. Orient a new pulley so the etched letter is facing outboard. The lower pulley is marked with an L.

10. Tighten the lower pulley bolt.

Inspect the crankset and bottom bracket for play, and tighten as needed. Clean the crankset and bottom bracket with water and mild soap.

Replace the bottom bracket when it no longer rotates smoothly.

Consult the Chainrings and Spiders User Manual on www.sram.com for complete torque specifications.

1. Use an 8 mm hex wrench to loosen the crankarm bolt.

2. Remove the drive side crankarm.

3. Use a rubber or plastic mallet to lightly tap the spindle from the drive side.

4. Remove the crankarm.

5. Loosen the bolt until the preload adjuster will rotate. Do not exceed a 1 mm gap.

6. Rotate the preload adjuster in the opposite direction of the adjuster arrow until it stops or makes contact with the crankarm.

Replace your chain at 0.8% elongation to maintain performance and limit wear to the cassette and chainring.

♻ 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.