How to Install, Adjust, and Maintain the NX X-SYNC Chainring

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in Chainring, SRAM

The NX X-SYNC chainring is a key component of SRAM’s entry-level [paid link] 1x drivetrain system, designed for improved chain retention and efficiency. Proper installation, adjustment, and maintenance of the NX X-SYNC chainring ensure optimal performance, reducing premature wear and drivetrain issues.

This guide covers everything you need to know about setting up and maintaining your NX X-SYNC chainring, troubleshooting common problems, and ensuring long-lasting performance.

Tools Required

Before starting, gather the following tools:

  • 4mm and 5mm Allen keys [paid link]
  • Torque wrench [paid link] (recommended for proper bolt tightening)
  • Chainring nut wrench (if applicable)
  • SRAM-compatible bottom bracket tool [paid link] (for crank removal if necessary)
  • Degreaser and chain cleaner
  • Chain-checker tool (to assess chain wear)
  • Lubricant suitable for chainrings and drivetrains

How to Install the NX X-SYNC Chainring

Step 1: Remove the Crankset (If Required)

  • If your bike uses a direct-mount chainring, you’ll need to remove the crankset.
  • Use a 5mm Allen key to loosen the crank bolt. If your crankset has a self-extracting bolt, continue turning until the crank arm separates from the spindle.
  • For a spider-mount chainring, remove the chainring bolts using a 4mm Allen key.

Step 2: Install the New NX X-SYNC Chainring

  • Position the chainring with the correct orientation. The narrow-wide tooth profile should align with the chain’s inner and outer links for better retention.
  • If using a direct-mount chainring, slide it onto the crank spindle and secure it per SRAM’s recommended torque settings (typically 40-54 Nm).
  • If using a spider-mount chainring, align the bolt holes with the crank spider and tighten evenly in a star pattern to 8-10 Nm.

Step 3: Reinstall the Crankset

  • Slide the crank arm back onto the spindle.
  • Tighten the crank bolt to the manufacturer’s torque specification (typically 48-54 Nm).

Adjusting the NX X-SYNC Chainring for Optimal Performance

1. Checking Chainline Alignment

  • The NX X-SYNC chainring should align with the cassette’s center cog for optimal chain retention.
  • If the chainline is off, use bottom bracket spacers or an alternative spindle length to adjust it.

2. Chain Tension and Compatibility

  • The NX X-SYNC chainring is designed for 1x drivetrains and is incompatible with front derailleurs.
  • Ensure you use a narrow-wide chain for improved retention and shifting performance.
  • Chain slack should be minimal when set up with a clutch-equipped rear derailleur.

3. Proper Bolt Tightening

  • Chainring bolts should be torqued to 8-10 Nm for a secure fit.
  • Recheck bolt tightness after the first few rides to prevent loosening.

Maintaining the NX X-SYNC Chainring for Longevity

Cleaning and Lubrication

  • Clean the chainring after muddy or wet rides using a degreaser and a soft brush.
  • Apply a dry or wet lubricant depending on riding conditions.
  • Wipe excess lube to prevent dirt buildup.

Checking for Wear

  • Inspect the chainring teeth for hooking or shark-tooth shapes, indicating wear.
  • A worn chain accelerates chainring wear. Use a chain-checker tool and replace the chain when stretch reaches 0.5%.

Replacing the NX X-SYNC Chainring

  • If the chainring shows significant wear or poor chain retention, replace it.
  • Always use an SRAM-compatible replacement to maintain drivetrain efficiency.

Troubleshooting Common NX X-SYNC Chainring Issues

1. Chain Drops or Poor Retention

  • Check chain wear and replace it if stretched beyond 0.5%.
  • Ensure your rear derailleur’s clutch mechanism is engaged.
  • Verify chainline alignment.

2. Noisy Pedaling or Chain Skipping

  • Inspect chainring teeth for excessive wear.
  • Clean and lubricate the drivetrain.
  • Make sure chainring bolts are properly torqued.

3. Chainring Bolts Keep Loosening

  • Apply medium-strength threadlocker (Loctite 243) on the bolt threads.
  • Retighten to 8-10 Nm using a torque wrench [paid link].

NX X-SYNC Chainring vs. Other Chainring Options

Compared to other chainrings, the NX X-SYNC offers:

Narrow-wide tooth profile: Improves chain retention without a chain guide.
Durable steel construction: Resists wear but is slightly heavier than aluminum options.
SRAM Direct Mount Compatibility: Works seamlessly with SRAM 1x drivetrains.

However, for lighter weight and improved efficiency, consider GX or X01 X-SYNC chainrings [paid link], which offer an aluminum build.

Compatibility Considerations for the NX X-SYNC Chainring

  • Compatible with SRAM NX, SX, and Eagle drivetrains.
  • Requires a compatible 11-speed or 12-speed chain.
  • Fits SRAM DUB [paid link], GXP [paid link], and BB30 cranksets, but check the mount type (direct-mount vs. spider).
  • Works best with a clutch-equipped rear derailleur for maximum chain retention.

Conclusion

The NX X-SYNC chainring is a reliable, durable choice for SRAM 1x drivetrains. Proper installation, adjustment, and maintenance will keep your drivetrain running smoothly for thousands of miles. By regularly inspecting wear, ensuring correct chainline alignment, and maintaining clean components, you can maximize the lifespan of your NX X-SYNC chainring.