The SRAM XG-1290 [paid link] cassette, part of the RED eTap AXS [paid link] groupset, is built for precision and performance. However, like any high-performance component, it requires careful installation, adjustment, and maintenance. This guide explores the most frequent issues riders face with the XG-1290 [paid link] cassette and offers detailed solutions to restore flawless operation.
Misaligned Shifting Across the Cassette
One of the most common complaints with the SRAM XG-1290 [paid link] is inconsistent or misaligned shifting, especially across multiple gears. This is often traced back to micro-adjustments in derailleur alignment or cassette installation.
Even a minor deviation in the derailleur hanger or an incorrect B-tension setting can cause jumps or delays. Riders should begin troubleshooting by checking derailleur alignment using a hanger alignment tool. For electronic drivetrains, ensure the AXS rear derailleur is properly paired and micro-adjusted through the SRAM AXS app. Manual fine-tuning can also be done via the shifter.
Reinstalling the cassette using a properly torqued lockring (40 Nm) and ensuring all cogs are seated against the XD [paid link]-R driver body will also eliminate inconsistencies.
Skipping Gears Under Load
Skipping under load—typically when climbing or sprinting—can stem from either chain wear or improper cassette installation. The XG-1290 is machined from a single piece of hardened steel, which reduces flex, but also requires a compatible, well-maintained chain.
Check the chain for wear using a chain checker. SRAM recommends replacing chains before 0.8% elongation to preserve cassette integrity. A worn chain can quickly eat into the precisely machined cogs, especially under torque.
Also inspect the lockring torque. Under-tightened lockrings or improperly installed XD [paid link]-R freehub bodies can cause flex and unwanted movement under power.
Noisy Operation in Specific Gears
Audible noise in one or two gear positions is another frequent concern, particularly in the mid-range of the cassette. This often results from chain line issues or insufficient chain lubrication.
Verify the chain line by inspecting crankset spacing and chainring alignment. With 12-speed drivetrains, chain line is more sensitive to minor discrepancies. A misaligned front chainring can create lateral tension, resulting in excessive noise.
Additionally, apply a dry lube [paid link] to reduce contamination in dry conditions or a ceramic wet lube [paid link] in wet weather. Avoid excess lubricant, as it attracts grit, which can amplify noise.
Shifting Delay into the 10T Cog
The smallest 10-tooth cog is a critical component of the XG-1290’s wide-range design but often causes hesitation during downshifts. This issue generally relates to rear derailleur limit screw settings or firmware calibration in the AXS system.
Confirm that the high-limit screw does not restrict full derailleur movement toward the 10T cog. For AXS systems, ensure that the latest firmware is installed and that the rear derailleur has been recalibrated. This process can be done through the SRAM AXS app in under five minutes.
In mechanical set-ups, verify cable tension is not too high, as excessive pull can prevent the derailleur from reaching the 10T cog efficiently.
Accelerated Cassette Wear
The XG-1290 is durable but still vulnerable to premature wear if maintenance is neglected. Riders who delay chain replacement or fail to clean drivetrain components regularly will accelerate cassette degradation.
Use a soft-bristle brush and degreaser to clean the cassette every 200-300 km, especially after rides in adverse weather. Replace chains every 3,500–4,000 km if using SRAM Flattop chains to preserve cassette longevity.
Also avoid cross-chaining—using the large chainring with the large cog or the small chainring with the small cog—which increases lateral load and reduces component lifespan.
Cassette Creaking or Movement
A properly installed XG-1290 should remain absolutely rigid. Any creaking sound or visible play indicates a fitment issue. Begin by removing the cassette and checking for grit or debris between the cassette and the XD [paid link]-R driver body. Even minor contamination can prevent a flush interface.
Re-grease the splines lightly, reinstall the cassette, and torque the lockring to spec. If the issue persists, inspect the driver body for wear. A damaged or loose XD-R driver will allow rotational movement, undermining cassette performance.
Incompatibility with Chain or Freehub
Compatibility issues often arise when riders attempt to pair the XG-1290 with non-SRAM components. The cassette requires an XD-R freehub and a 12-speed SRAM Flattop chain [paid link]. Substituting either will result in poor engagement, increased noise, or even chain drops.
Before installation, confirm that your wheelset uses a genuine XD-R driver. If using aftermarket chainrings, ensure they are 12-speed compatible with narrow-wide profiles optimized for Flattop chains.
Sudden Shifting Failures During Ride
Intermittent or complete shifting failure—especially in electronic AXS systems—is typically a sign of a low battery or poor connection. SRAM AXS batteries should be charged every 20–30 hours of ride time.
If shifting suddenly stops, check the LED indicator on the rear derailleur. A blinking red light indicates low power. Always carry a spare battery or swap the front derailleur battery in emergencies. For mechanical systems, inspect cable housing for kinks or fraying.
Chain Dropping Between Cogs
Chain dropping between cogs may appear due to excessive drivetrain contamination or chain wear. In rare cases, burrs on the cassette can also be to blame.
Inspect the cassette teeth for damage or sharp edges. Clean the drivetrain thoroughly and replace the chain if elongation exceeds tolerance. Ensure that the derailleur’s guide pulley is directly aligned with the cogs during setup to maintain precise movement.
By addressing these common SRAM XG-1290 cassette issues systematically, riders can ensure smoother operation, extend component lifespan, and enhance drivetrain performance. Regular inspection and proactive maintenance are essential to preserving the precision engineering that defines SRAM’s top-tier cassette.