Step-by-Step: Bearing Replacement in Next SL 29 Wheels

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Replacing the bearings in your Race Face Next SL 29 [paid link] wheels is a crucial maintenance task to ensure the longevity and performance of your bike. Over time, the bearings within the hubs can wear out due to the constant load, moisture, and dirt exposure. This guide will walk you through the process of replacing the bearings in your Next SL 29 [paid link] wheels, helping you maintain optimal performance.

Tools Required

  • Race Face Next SL 29 hub tool [paid link]
  • 10mm or 12mm through-axle wrench (depending on your wheel setup)
  • Bearing puller tool
  • Bearing press [paid link] tool
  • Clean rags
  • Degreaser
  • Lubricant (such as waterproof grease)
  • Small hammer (optional)
  • Torque wrench [paid link]
  • Plastic scraper or pry tool (optional)
  • Replacement bearings (specific to Race Face Next SL 29)

Preparation for Bearing Replacement

Before beginning the bearing replacement process, make sure to clean the area around the hubs to avoid contaminating the internal parts with dirt or grease. This step is essential for smooth operation throughout the process.

  1. Remove the Wheels: Begin by removing the wheels from your bike. Use the appropriate tool to undo the through-axle or quick-release mechanism, depending on your setup.
  2. Clean the Hubs: Using a clean rag and degreaser, wipe down the hub area. This will help prevent dirt and grime from entering the hub during the bearing replacement.

Step-by-Step Bearing Replacement

1. Remove the Hubs from the Wheels

To access the bearings, you need to remove the hubs from the wheels. Start by taking out the axle and any spacers. Depending on the design of your Next SL 29 hubs, the freehub may also need to be removed. This can be done by carefully sliding the freehub body off the hub body, making sure not to damage any internal parts.

2. Remove the Old Bearings

Once you have access to the internal hub assembly, the next step is to remove the old bearings. Use a bearing puller tool to carefully extract the bearings from their positions. Be cautious not to damage the hub shell when using the puller.

For best results, work in a systematic manner—starting from the drive side and moving to the non-drive side. If the bearings are particularly stuck, you may need to tap the puller lightly with a hammer to loosen them.

3. Clean the Hub Shell

With the old bearings removed, it’s essential to clean the inside of the hub shell thoroughly. Use a clean rag and degreaser to remove any grime or residue. Inspect the hub shell for any signs of damage or wear that might affect the installation of new bearings.

4. Install the New Bearings

Once the hub shell is clean and dry, apply a small amount of lubricant to the new bearings to ease the installation process. Using a bearing press [paid link] tool, carefully press the new bearings into place. Make sure that each bearing sits evenly and securely within the hub shell.

Be gentle but firm when pressing the bearings in to avoid misalignment. Ensure that the bearings are installed flush with the hub shell surface, as any uneven positioning could lead to premature bearing failure.

5. Reassemble the Hub

After the new bearings are securely in place, it’s time to reassemble the hub. Slide the freehub body back into position (if applicable), making sure that all internal parts are properly aligned. Reinstall any spacers or washers that were removed during disassembly.

At this point, reinstall the axle through the hub shell, ensuring that it fits snugly and that the freehub rotates freely.

6. Install the Hub Back onto the Wheel

Once the hub is reassembled, place it back onto the wheel. Tighten the axle to the specified torque settings using a torque wrench [paid link]. This ensures that the hub is securely attached to the wheel and that the bearings will perform optimally under load.

Troubleshooting Common Set-Up Issues

Even after replacing the bearings, you may encounter a few issues during reassembly. Here are some common problems and how to troubleshoot them:

  • Hub is not rotating smoothly: If the hub feels rough or doesn’t spin freely, the bearings may not be installed correctly or there may be debris in the hub. Disassemble the hub, inspect the bearings, and clean the internals.
  • Axle is not fitting correctly: If the axle doesn’t fit properly after bearing replacement, check to make sure that no spacers or washers were missed during reassembly. Also, verify that the axle is the correct size for your wheelset.
  • Freehub body is stiff: If the freehub body is stiff after reinstallation, ensure that it is properly lubricated and that the pawls inside the freehub are functioning smoothly. If the freehub body is stuck, disassemble it and clean or lubricate the pawls.

Customization and Optimization

Once the bearings are replaced, consider optimizing your Next SL 29 wheels for smoother performance and durability. Here are some suggestions:

  • Upgrade the Bearings: Consider upgrading to ceramic bearings for improved performance and durability. Ceramic bearings are more resistant to wear and heat, providing smoother rolling and longer lifespan.
  • Regular Maintenance: To prolong the life of your bearings, clean and lubricate them regularly. Prevent water and dirt from entering the hub by using hub-specific seals and by maintaining your wheelset in good condition.
  • Wheel Truing: After reinstalling the hub, check the wheel for trueness. If necessary, use a truing stand to adjust the spoke tension and ensure that the wheel spins without wobbling.

Comparison with Similar Models

When comparing the Race Face Next SL 29 wheels with other high-performance options on the market, the key factors to consider are weight, bearing quality, and overall hub design.

  • DT Swiss 240s Hubs: These hubs are renowned for their smoothness and reliability. While the Race Face Next SL 29 hubs are lightweight and well-built, the DT Swiss hubs have a more robust reputation in terms of long-term performance. However, Race Face hubs are lighter, which might be preferable for competitive cyclists seeking to shave off weight.
  • Chris King R45: Known for their durability and precision, Chris King hubs use high-quality bearings and are built to withstand tough conditions. The Race Face Next SL 29 is more affordable, but Chris King offers superior longevity and customization options, such as a wider range of freehub body choices.

Understanding Compatibility with Other Drivetrain Components

The Next SL 29 wheels are compatible with a wide range of drivetrains, including Shimano and SRAM. However, always check for compatibility with your specific freehub body before purchasing replacement bearings or when considering upgrading to a new drivetrain system.

If you are using a specific type of cassette, such as an XD driver body for SRAM, ensure that the correct freehub body is installed. The freehub body plays a key role in the compatibility of your drivetrain with the hub, as it interfaces directly with the cassette.

Always consult your bike’s specifications to confirm compatibility with the bearings, freehub body, and other components. Proper compatibility will ensure optimal performance and longevity of both your wheels and drivetrain.