How to Install, Adjust, and Maintain the RED eTap AXS Shifters

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in AXS, eTap, Red, Shifters, SRAM

The RED eTap AXS shifters [paid link] are some of the most advanced components available for cyclists, offering wireless shifting technology that enhances performance and reduces clutter on the bike. These shifters are a key part of SRAM’s AXS system, which allows for precise, responsive gear changes with minimal effort. Installing, adjusting, and maintaining the RED eTap AXS shifters [paid link] correctly is essential to ensure they perform at their best over the long term.

In this guide, we will take you through everything you need to know about installing, adjusting, and maintaining your RED eTap AXS shifters [paid link], from start to finish.

Tools Required

Before we begin, ensure you have the following tools at hand to properly install and maintain your RED eTap AXS [paid link] shifters:

  • 2mm and 5mm Allen wrenches [paid link]
  • Torque wrench [paid link]
  • Phillips screwdriver
  • Chain checker tool
  • Cable cutters
  • SRAM AXS app (for setup and updates)
  • Chain tool
  • Brake fluid (if applicable)

Installation of the RED eTap AXS Shifters

The installation of the RED eTap AXS [paid link] shifters is relatively straightforward thanks to their wireless design, but care must be taken to ensure everything is aligned correctly for optimal shifting performance.

Step 1: Install the Brake Levers

  1. Mount the Shifters: Start by attaching the left and right RED eTap AXS [paid link] shifters to the handlebars. Use the 2mm Allen wrench [paid link] to tighten the shifters in place. Ensure they are positioned comfortably for your hand position.
  2. Adjust Brake Levers: Adjust the brake lever angle for comfort. Tighten the bolts, making sure the levers are positioned at an angle that allows for natural hand positioning and easy access.

Step 2: Install the Rear Derailleur and Front Derailleur

  1. Attach the Rear Derailleur: Install the rear derailleur using a 5mm Allen wrench [paid link]. Make sure it is secured tightly to avoid any movement during shifts.
  2. Install the Front Derailleur (if applicable): Similarly, install the front derailleur onto the bottom bracket or derailleur hanger. Ensure it is aligned properly with the chainrings.
  3. Connect the AXS System: The RED eTap [paid link] AXS system communicates wirelessly. Once installed, power up the shifters and derailleurs and use the SRAM AXS app to pair them with the shifters. This will ensure that everything is synchronized.

Step 3: Install the Chain and Set the Cassette

  1. Chain Installation: Use a chain tool to install the correct chain for your drivetrain. Ensure it is the right length and threaded through both derailleurs correctly.
  2. Install the Cassette: Install the cassette on the rear wheel hub and secure it with the appropriate tool. Tighten it to the specified torque to avoid shifting issues.

Adjusting the RED eTap AXS Shifters

After installation, the next step is ensuring your RED eTap [paid link] AXS shifters are properly adjusted for flawless shifting performance.

Step 1: Fine-Tune the Front and Rear Derailleurs

  1. Rear Derailleur Adjustments: Check the rear derailleur alignment and ensure the B-tension screw is properly adjusted. This ensures the derailleur moves freely across all gears.
  2. Front Derailleur Adjustments: Adjust the front derailleur to align with the chainrings. This ensures smooth shifting and prevents chain drop.
  3. Limit Screws: Set the limit screws on both derailleurs to ensure they do not overshoot their designated gears. This will help prevent damage to the drivetrain.

Step 2: Test Shifting and Fine-Tune Cable Tension

  1. Shifting Test: Shift through all the gears on the cassette and check the smoothness of each shift. If there is hesitation or skipping, the derailleur may need further fine-tuning.
  2. Fine-Tuning with the AXS App: Use the SRAM AXS app to adjust the derailleur positioning for each gear. This app allows you to make micro-adjustments for smoother shifting without having to manually adjust screws.

Step 3: Brake Lever Adjustments

If your RED eTap [paid link] AXS shifters are paired with hydraulic brakes, you’ll need to adjust the brake lever position. Check that the brake pads are aligned with the rim or rotor, and adjust the lever throw to ensure comfortable braking.

Maintenance of the RED eTap AXS Shifters

Regular maintenance is essential for ensuring the longevity and consistent performance of your RED eTap AXS shifters. Below are some tips on maintaining the shifters.

Step 1: Clean the Shifters and Derailleurs

Clean the shifters and derailleurs regularly to prevent dirt and grime from affecting performance. Use a soft brush to remove debris from the drivetrain and a degreaser to clean the chain and cassette.

Step 2: Battery Management and Charging

One of the standout features of the RED eTap AXS shifters is their wireless operation, powered by rechargeable batteries. Ensure the batteries are charged regularly using the provided charger. The SRAM AXS app will notify you when the battery is running low, but it’s a good idea to check manually every few weeks.

  1. Remove the Battery: Use the included tool to remove the battery from the rear derailleur.
  2. Charge the Battery: Charge the battery to full capacity, typically within 1-2 hours. Be sure not to overcharge it to extend battery life.

Step 3: Keep Firmware Updated

The RED eTap AXS system benefits from firmware updates that improve shifting performance and address any bugs. Use the SRAM AXS app to check for and install any updates to keep your system running at peak performance.

Troubleshooting Common Issues with RED eTap AXS Shifters

Even the most advanced systems like the RED eTap AXS shifters can encounter issues over time. Below are some common problems and their solutions:

1. Shifting Delays or Missed Shifts

  • Cause: This could be due to improper battery charging, misalignment of the derailleur, or incorrect limit screw settings.
  • Solution: First, check the battery charge level [paid link]. If the battery is fine, check the derailleur alignment and ensure the limit screws are properly set. You can also use the SRAM AXS app to adjust the derailleur.

2. Unresponsive Shifters

  • Cause: If one or both shifters are unresponsive, it may be due to a loose connection or battery failure.
  • Solution: Re-sync the shifters using the SRAM AXS app. Check the battery and replace or charge it if needed.

3. Difficulty Shifting into Certain Gears

  • Cause: This could indicate an issue with derailleur positioning or cable tension (if not fully wireless).
  • Solution: Ensure the derailleur is properly aligned with the cassette and that the limit screws are correctly adjusted.

Customizing and Optimizing Your RED eTap AXS Shifters

To get the best performance from your RED eTap AXS shifters, customization can make a significant difference.

Step 1: Customize Button Configuration

The RED eTap AXS shifters allow you to customize the button configuration. You can choose between different shifting modes to suit your preference for gear changes. Adjusting the layout of your buttons can help optimize your shifting experience, especially during intense rides.

Step 2: Optimize AXS App Settings

The AXS app is a powerful tool that allows you to fine-tune your drivetrain, update firmware, and make real-time adjustments. Ensure that your app settings are fully optimized for your bike setup, and regularly check for updates.

Conclusion

Proper installation, adjustment, and maintenance of your RED eTap AXS shifters will ensure you get the most out of your investment. By following this guide, you’ll be able to optimize your shifting performance, avoid common issues, and keep your shifters in top condition for years to come.