How to Install, Adjust, and Maintain the XG-1290 Cassette

Posted on
in AXS, Cassette, eTap, SRAM

The SRAM XG-1290 [paid link] cassette is a high-performance, lightweight, and durable cassette designed for road cyclists using SRAM’s 12-speed eTap AXS drivetrain. As a key component in your drivetrain, proper installation, adjustment, and maintenance of the XG-1290 [paid link] ensure smooth shifting and extended longevity.

This guide covers everything you need to know about the XG-1290, including installation, fine-tuning, troubleshooting, and best maintenance practices.

Tools Required

Before starting, gather the necessary tools:

  • Cassette lockring tool [paid link] (SRAM-compatible)
  • Torque wrench [paid link] (capable of 40Nm)
  • Chain whip (for removal)
  • Grease (for installation)
  • Clean rag and degreaser
  • Soft brush for cleaning
  • Nitrile gloves (optional)

1. Understanding the XG-1290 Cassette

The XG-1290 cassette is designed for SRAM’s 12-speed eTap AXS drivetrain, offering seamless wireless shifting. It uses SRAM’s XDR [paid link] driver body, making it incompatible with traditional HG freehub bodies.

Key Features of the XG-1290

  • Fully machined one-piece steel construction for durability and weight savings
  • XDR [paid link] driver body compatibility
  • Available in multiple gearing options, including 10-26T, 10-28T, and 10-33T
  • Optimized shifting performance with SRAM’s Flat-Top chain and eTap AXS system

Understanding these features ensures correct installation and troubleshooting.

2. How to Install the XG-1290 Cassette

Proper installation of your cassette prevents shifting issues and drivetrain wear. Follow these steps:

Step 1: Prepare the Freehub Body

  • Clean the XDR freehub body with a degreaser and a clean rag.
  • Apply a thin layer of grease to the freehub splines to prevent seizing.

Step 2: Mount the Cassette

  • Align the largest sprocket with the freehub splines and carefully slide the one-piece cassette onto the freehub body.
  • Ensure proper seating before securing the lockring.

Step 3: Secure the Lockring

  • Using the lockring tool [paid link], tighten the lockring to 40Nm using a torque wrench [paid link].
  • Do not overtighten, as it may damage the freehub or cassette.

Step 4: Check Installation

  • Rotate the cassette to ensure it spins freely without play.
  • Test shifting to confirm smooth engagement.

3. Adjusting the XG-1290 for Optimal Shifting

Fine-Tuning Your Derailleur for Precise Shifting

After installation, adjusting the rear derailleur ensures smooth and accurate gear changes.

B-Tension Adjustment

  • The B-gap (distance between the cassette and upper derailleur pulley) must be set correctly for optimal chain wrap.
  • Use SRAM’s B-tension gauge to adjust accordingly.

Limit Screws

  • High-limit screw prevents the chain from overshifting beyond the smallest cog.
  • Low-limit screw stops the chain from shifting past the largest cog.
  • Adjust screws to eliminate chain skipping or overshifting.

Micro-Adjustments via eTap AXS

  • Hold the rear shift button and fine-tune the derailleur position in micro-steps for precise shifting.

4. Common XG-1290 Installation Mistakes and How to Avoid Them

Avoid these errors to prevent premature wear or shifting problems:

Using the Wrong Freehub Body

  • The XG-1290 requires an XDR driver body. Installing it on an HG freehub won’t work.

Incorrect Torque on Lockring

  • Under-tightening results in cassette play.
  • Over-tightening risks freehub damage.

Skipping B-Gap Adjustment

  • A misaligned B-gap affects shifting smoothness and chain retention.

5. How to Maintain the XG-1290 Cassette for Longevity

Regular maintenance keeps your cassette running like new and prevents drivetrain wear.

Cleaning Routine

  • Every 200-300 miles, clean the cassette using a soft brush, degreaser, and warm water.
  • Remove excess dirt between cogs using a toothbrush or cassette brush.

Lubrication Best Practices

  • Apply chain lube sparingly to avoid dirt buildup on the cassette.
  • Wipe off excess lube to prevent residue accumulation.

Inspecting for Wear

  • Look for shark-tooth-shaped teeth, which indicate cassette wear.
  • Replace the cassette if shifting becomes inconsistent despite derailleur adjustments.

6. Troubleshooting Common Shifting Issues with the XG-1290

Skipping or Sluggish Shifting

  • Check chain wear – A worn chain accelerates cassette wear.
  • Fine-tune derailleur micro-adjustments via eTap AXS.

Noisy Drivetrain

  • Ensure correct B-gap adjustment.
  • Clean and lubricate chain and cassette properly.

Cassette Play or Loose Feeling

  • Re-torque the lockring to 40Nm.
  • Inspect freehub body engagement for wear.