How to Install, Adjust, and Maintain the SRAM Force eTap AXS

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The SRAM Force eTap AXS is one of the most popular electronic drivetrains for road bikes, combining precision, speed, and ease of use. As with any high-performance component, proper installation, adjustment, and maintenance are essential to keep it running smoothly. This guide will walk you through the step-by-step process of installing the SRAM Force eTap AXS, making necessary adjustments, and maintaining it for optimal performance.

Tools Required

To install, adjust, and maintain the SRAM Force eTap AXS drivetrain, you’ll need the following tools:

  • Torque Wrench [paid link] (3-6 Nm range)
  • 5mm Allen Wrench [paid link]
  • 2.5mm Allen Wrench [paid link]
  • Cable Cutters
  • Needle Nose Pliers
  • T25 Torx Wrench [paid link]
  • Chain Whip
  • Bottom Bracket Tool [paid link]
  • Bike Stand [paid link] (optional but recommended for easier handling)
  • SRAM AXS App (for pairing components)
  • Cleaning Supplies (rags, degreaser, brush)
  • Lubricant (appropriate for your chain and drivetrain components)

Installing the SRAM Force eTap AXS

1. Install the Bottom Bracket and Crankset

Before installing the Force eTap AXS components, you must first install your bottom bracket and crankset.

  • Bottom Bracket: Ensure your bike frame is compatible with the bottom bracket type used by the SRAM Force eTap AXS (typically BSA or PF30 [paid link]). Use the correct tool to install the bottom bracket securely.
  • Crankset: Align the crankset with the bottom bracket, ensuring the correct orientation. Tighten the crankset to the manufacturer’s specified torque settings.

2. Install the Front and Rear Derailleurs

  • Front Derailleur: The front derailleur should be installed at a height of approximately 28mm above the largest chainring. Tighten the derailleur’s clamp securely with a torque wrench [paid link].
  • Rear Derailleur: The rear derailleur attaches to the derailleur hanger. Be sure it’s aligned properly with the cassette. Install and torque the derailleur mount bolt according to the manufacturer’s instructions.

3. Install the SRAM Force eTap AXS Shifters

  • Handlebars: Install the shifters by sliding them onto your handlebars. Ensure the shifters are positioned comfortably for your riding style.
  • Shifter Mounting: Use a torque wrench [paid link] to tighten the shifters onto the handlebars, ensuring they are secure without over-tightening.

4. Set Up the Battery and Wire Management

The SRAM Force eTap AXS system uses a battery to power both derailleurs and the shifters. Place the battery securely in the designated mount on your frame or seatpost.

  • Battery Placement: Make sure the battery is easily accessible for charging.
  • Cable Routing: Ensure that the wiring is clean and securely routed, avoiding any areas where it could rub against the frame or components.

5. Install the Chain

  • Chain Length: Using a chain tool, size the chain to fit your bike. Ensure the chain is long enough to handle the largest chainring and the largest cog without overstretching.
  • Install the Chain: Once sized, thread the chain through the front and rear derailleurs and connect the ends using the quick link or chain tool.

Adjusting the SRAM Force eTap AXS

1. Adjust the Front Derailleur

  • Trim Settings: The Force eTap AXS allows automatic trimming of the front derailleur, but you can adjust the trim settings through the SRAM AXS app to ensure smooth shifting.
  • Height and Alignment: If necessary, fine-tune the derailleur height and alignment to ensure smooth chain movement and accurate shifts.

2. Adjust the Rear Derailleur

  • B-Screw Adjustment: Use the B-screw on the rear derailleur to adjust the derailleur’s position relative to the cassette. Make sure the jockey wheels are at the correct distance from the cogs for smooth shifting.
  • Limit Screws: Adjust the limit screws on the rear derailleur to set the outer and inner limits of the derailleur’s movement. This ensures the derailleur doesn’t overshift and cause chain drop or misalignment.

3. Fine-Tune Shifting with the SRAM AXS App

  • Pairing: Open the SRAM AXS app and pair your shifters and derailleurs with the battery. The app allows you to perform micro-adjustments to fine-tune your system.
  • Shifter Sensitivity: You can adjust the shifting response in the app, making it more or less sensitive depending on your preference.

Maintaining the SRAM Force eTap AXS

1. Regular Cleaning

  • Cleaning the Drivetrain: To keep your drivetrain in top condition, regularly clean the derailleurs, chain, and cogs. Use a degreaser and a brush to remove dirt and grime that can affect performance.
  • Frame Cleaning: Also clean the frame, especially around the battery and wiring, to ensure everything remains in good condition.

2. Battery Maintenance

  • Battery Charging: The SRAM Force eTap AXS system is powered by a rechargeable battery. Charge the battery regularly, ideally after every few rides, to ensure you don’t run out of power mid-ride.
  • Battery Replacement: Over time, the battery’s capacity may degrade. If you notice a significant drop in battery life, it may be time to replace the battery.

3. Chain and Cassette Maintenance

  • Lubrication: Apply lubricant to the chain regularly to prevent wear and maintain smooth shifting. Be sure to wipe off excess lubricant to avoid attracting dirt.
  • Chain Wear: Check for chain wear periodically using a chain checker tool. A worn chain should be replaced to prevent excessive wear on the cassette and chainrings.

4. Software Updates

The SRAM Force eTap AXS system receives firmware updates to improve performance. Regularly check the SRAM AXS app for any available updates, which can improve shifting performance, battery life, and overall functionality.

Troubleshooting Common Issues with the SRAM Force eTap AXS

1. Poor Shifting Performance

If you’re experiencing poor shifting, it could be due to several factors:

  • Cable Tension: Incorrect cable tension can affect shifting performance. Double-check the tension settings in the SRAM AXS app.
  • Battery Power: Ensure that the battery is charged. Low power can cause delayed shifting or failure to shift.

2. Front Derailleur Trim Not Working

If the automatic trim feature is malfunctioning, manually adjust the trim settings in the SRAM AXS app. Ensure the derailleur is positioned correctly and doesn’t rub against the chain when shifting.

3. Noisy Drivetrain

A noisy drivetrain can be caused by several issues, including a misaligned derailleur, a worn-out chain, or improper lubrication. Regular maintenance and adjustment will help reduce noise.

Comparison with Other Drivetrains

When comparing the SRAM Force eTap AXS to other drivetrains, such as Shimano’s Di2 or Campagnolo’s EPS, there are key differences:

  • Ease of Installation: The SRAM Force eTap AXS is known for its straightforward installation and wireless setup, which eliminates the need for complex wiring.
  • Shifting Performance: SRAM offers smooth and responsive shifting, although Shimano’s Di2 may provide a slightly more refined feel for some riders.
  • Customization: The SRAM AXS system provides an intuitive app for adjusting shifting preferences, a feature that sets it apart from some competitors.

Conclusion

The SRAM Force eTap AXS drivetrain offers exceptional performance for road cyclists, and by following this guide for installation, adjustment, and maintenance, you can ensure it stays in top condition. Regular maintenance, proper adjustments, and using the SRAM AXS app will keep your system performing at its best for years to come.