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

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The SRAM Rival XPLR eTap AXS [paid link] rear derailleur offers an advanced and reliable option for riders looking to upgrade their bike’s drivetrain, especially for gravel or mixed-terrain riding. This derailleur is a part of SRAM’s AXS ecosystem, providing precise shifting performance, wireless integration, and intuitive set-up. In this guide, we will walk you through the steps of installing, adjusting, and maintaining your Rival XPLR eTap AXS rear derailleur, ensuring smooth and efficient operation of your bike.

Tools Required

  • 4mm Allen wrench
  • 5mm Allen wrench
  • Torque wrench
  • T25 Torx wrench
  • Chain tool (if needed for chain installation or removal)
  • AXS charger (for powering the derailleur)
  • SRAM AXS mobile app (for wireless setup)
  • Chain checker (optional, for checking chain wear)
  • Cable cutters (if needed for derailleur hanger or derailleur cage setup)

Preparing for Installation

Before you begin the installation process, ensure that your bike is properly supported in a work stand, and the rear wheel is removed. If you’re replacing an existing derailleur, remove it first along with the chain. This guide assumes that your bike is already equipped with an eTap AXS groupset or is ready for AXS integration.

Step 1: Install the Rear Derailleur Hanger

Ensure that the derailleur hanger is properly aligned and securely attached to your bike frame. If you are installing a new hanger, follow the manufacturer’s instructions to properly torque it into place.

Step 2: Attach the Rival XPLR eTap AXS Derailleur

  • Take the Rival XPLR eTap AXS rear derailleur and align the derailleur hanger with the mounting point on the frame.
  • Use a 5mm Allen wrench to tighten the derailleur to the hanger. Make sure the derailleur is oriented correctly, with the jockey wheels positioned parallel to the cassette.
  • Tighten the mounting bolt to the recommended torque specification, typically between 7-9 Nm.

Step 3: Install the AXS Battery

  • Insert the AXS battery into the rear derailleur. It is important that the battery is seated correctly.
  • Ensure the battery is properly connected, and that the connection is secure. The battery should be facing the proper direction as indicated by the derailleur design.
  • Press the battery firmly into place until it clicks.

Step 4: Connect the Derailleur to the AXS Network

  • Power on the derailleur by pressing the small button on the AXS unit.
  • Download the SRAM AXS app on your smartphone, and follow the instructions to pair the derailleur with the app.
  • The app will help you configure the wireless connection and enable communication between the derailleur and the rest of the eTap AXS components.

Step 5: Install the Chain

  • If you’re installing a new chain, ensure it is of the correct length by measuring it with the derailleur in the smallest cog and largest chainring positions. If needed, use a chain tool to remove any excess links.
  • Thread the chain through the derailleur, ensuring it moves smoothly over the jockey wheels.

Step 6: Install the Cassette (if necessary)

If you’re replacing or installing a new cassette, use a lockring tool and a torque wrench to ensure the cassette is installed securely on the freehub body.

Adjusting the Rival XPLR eTap AXS Rear Derailleur

Once installed, it’s time to adjust your derailleur for optimal performance. The Rival XPLR eTap AXS is designed to make the setup process easier with its automatic trim feature, but some fine-tuning is still required.

Step 1: Check the Battery Charge

Before beginning any adjustments, ensure the AXS battery is fully charged. A low battery can cause poor shifting performance.

Step 2: Test the Shifting

Using the SRAM AXS app, perform an initial test by shifting through all the gears while the bike is on the stand. This allows you to confirm that the derailleur is moving properly and indexing correctly across the cassette.

Step 3: Adjust the Limit Screws

The Rival XPLR eTap AXS derailleur features adjustable limit screws to prevent the derailleur from shifting too far in either direction.

  • Shift to the smallest chainring and the smallest cog.
  • Adjust the low-limit screw (marked “L”) so that the derailleur jockey wheel is aligned with the smallest cog.
  • Shift to the largest cog and adjust the high-limit screw (marked “H”) to ensure that the derailleur doesn’t overshift beyond the largest cog.

Step 4: Fine-Tune the Shift Performance

If your shifts are sluggish or inaccurate, use the AXS app to fine-tune the derailleur. The app will allow you to make micro-adjustments to the derailleur’s movement and fine-tune the shift response.

Step 5: Check for Chain Rub

Ensure the chain does not rub against the derailleur cage or the front derailleur (if you have a double or triple chainset). Adjust the chainline or limit screws to eliminate any noise or friction.

Troubleshooting Common Setup Issues

While installing and adjusting the Rival XPLR eTap AXS rear derailleur, you may encounter a few common issues. Here are some troubleshooting tips to resolve them.

1. Slow or Unresponsive Shifting

  • Check the battery level of your AXS derailleur. A weak battery can lead to sluggish or unresponsive shifting.
  • Make sure the derailleur is properly aligned with the cassette, and verify that the limit screws are correctly set.
  • Use the SRAM AXS app to adjust the derailleur’s movement if the shifting is still not smooth.

2. Chain Dropping or Skipping

  • Check the chain length and ensure it is the correct size for your bike’s gearing.
  • Inspect the cassette and chain for wear. A worn cassette or chain may cause skipping or poor shifting.
  • Ensure the derailleur hanger is not bent, which could cause the derailleur to shift improperly.

3. No Shifting at All

  • Ensure that the derailleur is paired correctly with the AXS network via the mobile app.
  • Double-check the battery connection. A loose or incorrectly installed battery can prevent the derailleur from working properly.

Customizing and Optimizing the Rival XPLR eTap AXS Rear Derailleur

To get the best performance from your Rival XPLR eTap AXS rear derailleur, consider these customization and optimization tips.

1. Adjust Shifting Sensitivity

You can adjust the shifting sensitivity through the SRAM AXS app. Fine-tuning this feature allows for more immediate and precise shifts, ideal for fast-paced gravel rides or challenging terrain.

2. Experiment with Chainring Sizes

Pairing the Rival XPLR eTap AXS derailleur with a wide range of cassette and chainring sizes can significantly alter your bike’s performance. If you plan on tackling steep climbs or technical descents, experimenting with different gear ratios can give you the flexibility you need.

3. Set Up a Custom Gear Range

The Rival XPLR eTap AXS system is perfect for gravel bikes, where versatility and performance are essential. By choosing a custom gear range and combining it with your derailleur, you can optimize your bike for different terrains, ensuring that you always have the right gear for any situation.

Comparison with Similar Models

When choosing between the Rival XPLR eTap AXS and other models like the SRAM Force eTap AXS or SRAM Red eTap AXS, it’s essential to consider your specific riding needs.

Rival XPLR vs. SRAM Force eTap AXS

  • Price: The Rival XPLR eTap AXS offers a more budget-friendly option compared to the Force and Red models.
  • Performance: While the Rival XPLR is designed for gravel and mixed-terrain riding, the Force eTap AXS offers slightly more refined shifting performance for road riding.
  • Weight: The Force eTap AXS is lighter than the Rival XPLR but may not be as durable for off-road conditions.

Rival XPLR vs. SRAM Red eTap AXS

  • Cost: The Red eTap AXS is the top-tier model, offering premium materials and the lightest weight. However, it comes at a significantly higher price.
  • Durability: The Rival XPLR is designed to be robust and perform well under rough conditions, making it a better option for gravel riders on a budget.

Compatibility with Other Drivetrain Components

The Rival XPLR eTap AXS is part of the AXS ecosystem, ensuring seamless compatibility with other SRAM eTap AXS components, including the AXS front derailleur, shifters, and brake levers. It is important to ensure your bike frame is compatible with the eTap AXS system and that your crankset, chain, and cassette are all compatible with the derailleur’s specifications.

Key Compatibility Considerations:

  • The Rival XPLR eTap AXS is optimized for use with 10-36T or 10-42T cassettes.
  • The derailleur is compatible with SRAM’s AXS wireless system, enabling smooth integration with other AXS components.
  • It is designed for wide-range gearing, making it ideal for gravel or mixed-terrain use.

By following these steps and tips, you can successfully install, adjust, and maintain your Rival XPLR eTap AXS rear derailleur, ensuring optimal performance and durability for all your cycling adventures.