How to Install Your Force XPLR eTap AXS Rear Derailleur at Home

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Installing a SRAM Force XPLR eTap AXS [paid link] rear derailleur can seem like a daunting task, but with the right tools and instructions, it is completely manageable. This step-by-step guide will walk you through the installation process, troubleshooting, and maintenance of the Force XPLR eTap AXS rear derailleur. By following these instructions, you’ll ensure your bike’s drivetrain operates at peak performance.

Tools Required

  • 5mm Allen wrench
  • Torque wrench (recommended)
  • Flathead screwdriver
  • T10 Torx driver
  • eTap AXS battery
  • SRAM AXS charger
  • Chain checker tool (optional)
  • Cable cutters (optional)
  • Chain whip (optional)
  • Cassette lockring tool (optional)

Installing the Force XPLR eTap AXS Rear Derailleur

Before you begin, ensure that your bike is stable and secure. Use a bike stand if possible to keep your bike upright during the installation.

Step 1: Remove the Old Rear Derailleur (If Applicable)

If you’re replacing an existing derailleur, start by removing the rear wheel. Use a 5mm Allen wrench to loosen and remove the derailleur hanger bolt, followed by the derailleur itself. Disconnect any cables or eTap AXS battery if they are still connected.

Step 2: Install the Derailleur Hanger (If Necessary)

If you are installing a new derailleur hanger, carefully align the hanger with the frame and tighten it securely using a 5mm Allen wrench. The hanger should be perfectly straight to prevent shifting issues.

Step 3: Mount the Rear Derailleur

Position the Force XPLR eTap AXS rear derailleur onto the derailleur hanger, making sure the jockey wheels face outward. Attach the derailleur to the hanger using the provided bolt. Use a torque wrench to tighten it to the recommended torque specification (usually around 8–10Nm). Make sure it is firmly installed without over-tightening.

Step 4: Install the Chain

Feed the chain through the jockey wheels of the derailleur, ensuring the chain is threaded properly. The chain should run smoothly through both the upper and lower jockey wheels. Check for correct chain tension to prevent any slack. If the chain is too long, use a chain tool to remove any excess links.

Step 5: Install the eTap AXS Battery

Insert the eTap AXS battery into the rear derailleur’s battery slot. The battery should click into place securely. Once installed, power on the system to ensure the battery is functioning correctly. If necessary, charge the battery using the SRAM AXS charger before continuing.

Step 6: Pair the Rear Derailleur with the Shifters

The Force XPLR eTap AXS system uses SRAM’s AXS wireless technology. To pair the rear derailleur with your eTap shifters, press and hold the button on the derailleur until the LED flashes, signaling that it’s in pairing mode. Follow the pairing instructions on your eTap shifters to connect the two devices wirelessly.

Step 7: Adjust the Limit Screws

Once the derailleur is installed and paired, shift the bike through all the gears to test for proper alignment. Use a T10 Torx driver to adjust the high and low limit screws on the derailleur to ensure the chain moves smoothly across the cassette without overshooting the top or bottom gears. Fine-tuning the limit screws will ensure smooth shifting and prevent the derailleur from hitting the frame.

Step 8: Test the System

With everything installed and adjusted, test the system by shifting through all the gears on the cassette. Pay close attention to the smoothness of the shifts and any noise from the drivetrain. If the shifting is hesitant or the chain doesn’t settle properly, you may need to adjust the B-screw or fine-tune the limit screws again.

Troubleshooting Common Issues

Issue 1: Sluggish Shifting

  • Cause: Low battery or poor wireless connection.
  • Solution: Charge the eTap AXS battery fully. Ensure that the derailleur and shifters are properly paired.

Issue 2: Chain Dropping Off the Cassette

  • Cause: Incorrect limit screw adjustment or derailleur misalignment.
  • Solution: Recheck the limit screw adjustments and ensure the derailleur hanger is aligned correctly. If the problem persists, double-check your installation process.

Issue 3: Poor Chain Tension

  • Cause: Incorrectly sized chain or improperly threaded chain through the derailleur.
  • Solution: Verify that the chain length is appropriate for your bike. Check that the chain is routed properly through the derailleur.

Issue 4: Unresponsive eTap System

  • Cause: Out-of-range battery or system malfunction.
  • Solution: Check the battery charge level, and ensure it is inserted properly. Reset the system if necessary by unpairing and re-pairing the components.

Customization and Optimization for Better Performance

The Force XPLR eTap AXS rear derailleur is designed for optimal performance on gravel bikes, especially those with a wide range cassette. To further enhance the performance, consider the following customizations:

  • Upgrade the Cassette: Choose a larger cassette for even more gear options, ideal for hilly or off-road terrain.
  • Adjust the B-Screw: To optimize the derailleur’s performance, adjust the B-screw for improved clearance with the cassette. This can reduce chain rub and improve shifting accuracy.
  • Chain Length: Use a chain checker tool to ensure the chain is not too long or too short for the rear derailleur’s capacity. A properly sized chain will allow for better shifting and reduced wear.

Compatibility with Other Drivetrain Components

The SRAM Force XPLR eTap AXS rear derailleur is part of SRAM’s AXS system, making it highly compatible with other eTap AXS components. However, it is specifically designed for gravel and adventure bikes with wide-range cassettes (10-44T). If you are using a different cassette size or a different drivetrain system, the Force XPLR eTap AXS may not be compatible. Always check the specifications of your cassette, shifters, and front derailleur to ensure full compatibility.

Conclusion

Installing the SRAM Force XPLR eTap AXS rear derailleur is straightforward with the right tools and attention to detail. By following the installation steps and troubleshooting advice provided, you’ll ensure a smooth and reliable setup. Proper maintenance and occasional adjustments will keep your drivetrain performing at its best, whether you’re tackling gravel roads or going on your next cycling adventure.