How to Install, Adjust, and Maintain the Apex AXS Crankset

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in Apex, AXS, Crankset, SRAM

The Apex AXS Crankset [paid link] is an advanced 1x electronic drivetrain component from SRAM, designed for high efficiency and precise power transfer. Proper installation and maintenance are crucial for optimal performance, longevity, and reliability.

In this guide, we will cover everything you need to know about installing, adjusting, and maintaining your Apex AXS crankset [paid link].

Tools Required

Before you begin, ensure you have the following tools:

  • 8mm Allen wrench [paid link]
  • Torque wrench [paid link]
  • Bottom bracket tool [paid link] (specific to your BB standard)
  • Grease or anti-seize compound
  • Isopropyl alcohol and a clean rag
  • Crank arm preload adjuster tool (if applicable)

Installing the Apex AXS Crankset

Step 1: Preparing the Bottom Bracket

  1. Clean the bottom bracket shell with isopropyl alcohol to remove debris and old grease.
  2. If installing a new bottom bracket, ensure compatibility with your frame and Apex AXS crankset [paid link].
  3. Apply grease or anti-seize to the bottom bracket threads or press-fit surfaces to prevent creaking.

Step 2: Installing the Crankset

  1. Insert the Apex AXS spindle through the bottom bracket from the drive side.
  2. Align the non-drive-side crank arm with the spindle and gently press it onto the splines.
  3. Use an 8mm Allen wrench [paid link] to tighten the crank bolt to SRAM’s specified torque (typically 48–54 Nm).
  4. If your crankset has a preload adjuster, turn it until there is no lateral play but the crank still rotates freely.

Step 3: Checking for Proper Installation

  1. Spin the cranks to ensure smooth rotation.
  2. Check for any lateral play by wiggling the crank arms side-to-side.
  3. If play is detected, slightly adjust the preload or re-tighten the crank bolts.

Adjusting the Apex AXS Crankset

Fine-Tuning Chainline and Chain Retention

  • Ensure the chainring is properly torqued to prevent flex or movement.
  • The chainline should align with the center of the cassette for optimal shifting and efficiency.

Verifying Crank Arm Tightness

  • After your first ride, recheck the crank bolt torque and adjust if necessary.
  • If you notice creaking, remove the crankset, clean all contact points, reapply grease, and reinstall.

Checking for Bottom Bracket Issues

  • If you experience grinding or rough rotation, inspect your bottom bracket bearings.
  • Worn-out bearings should be replaced to prevent performance loss.

Maintaining the Apex AXS Crankset

Cleaning and Lubrication Routine

  1. After every few rides, wipe down the crank arms and chainring with a mild degreaser.
  2. Use a dry rag or compressed air to remove excess dirt from the chainring teeth.
  3. Periodically inspect for wear or damage, especially if riding in wet or muddy conditions.
  4. Apply a light coat of grease on the crank bolt threads and spindle contact points.

Inspecting for Wear and Tear

  • Check the chainring teeth for signs of wear, such as hooked or overly sharp teeth.
  • Inspect the crank arms for cracks or stress marks, especially around the spindle interface.
  • Monitor the bottom bracket condition for smooth rotation and silent operation.

Replacing Worn Components

  • If the chainring shows excessive wear, replace it to maintain smooth power transfer.
  • If bottom bracket bearings develop play or grinding noises, replace them promptly.

Troubleshooting Common Apex AXS Crankset Issues

Creaking or Clicking Noises

  • Remove the crankset, clean all contact surfaces, and reapply grease before reinstalling.
  • Check if the bottom bracket cups are properly torqued and not contaminated with dirt.

Crankset Feels Loose or Wobbly

  • Re-tighten the crank arm bolt to SRAM’s torque specification.
  • Ensure the preload adjuster is set correctly to remove side-to-side movement.

Chain Drops Frequently

  • Inspect the chainring teeth for wear or bent teeth that could cause chain retention issues.
  • Ensure the chain is properly tensioned and not excessively worn.

Apex AXS Crankset vs. Other Models: Key Differences

The Apex AXS Crankset is designed for 1x electronic drivetrains, offering improved chain retention and lighter weight compared to mechanical cranksets. When compared to Rival AXS or Force AXS, the Apex AXS is a more affordable option with similar technology but slightly heavier materials.

Final Thoughts

Proper installation and maintenance of your Apex AXS Crankset will ensure a smooth, reliable ride with minimal mechanical issues. By following these guidelines, you can maximize performance and longevity while avoiding common setup mistakes.