How to Service Your Boxxer Select RC Suspension Fork at Home

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The Boxxer Select RC [paid link] from RockShox is a high-performance suspension fork designed for mountain biking enthusiasts who demand reliability and precision in their ride. Over time, regular use and exposure to elements can cause wear and tear, impacting the fork’s performance. Servicing your Boxxer Select RC [paid link] suspension fork at home is a rewarding process that ensures your fork continues to perform at its best. In this guide, we’ll walk you through the steps needed for servicing the Boxxer Select RC, covering everything from installation to troubleshooting and maintenance.

Tools Required

To service the Boxxer Select RC suspension fork, you’ll need the following tools:

  • Torque wrench [paid link]
  • 5mm and 8mm Allen wrenches [paid link]
  • Flathead screwdriver
  • T25 and T30 Torx drivers
  • 10mm socket wrench
  • Suspension fluid (refer to the fork manual for specifications)
  • Grease
  • Oil drain pan
  • Cleaning rags
  • RockShox seal kit (for replacing seals and bushings)
  • Zip ties or fork-specific suspension fluid syringes

Disassembling the Fork

Before servicing, ensure that you are working in a clean environment and that the bike is securely held, either in a work stand or with the front wheel removed. Follow these steps to disassemble the fork:

Step 1: Remove the Front Wheel and Brake Caliper

  • Remove the front wheel from the fork, ensuring you also detach the brake caliper from the fork’s mount. This can be done by removing the bolts that hold the brake caliper in place using a 5mm Allen wrench [paid link].

Step 2: Remove the Fork from the Frame

  • Using a 5mm Allen wrench [paid link], remove the bolts from the headset and carefully remove the fork from the frame. Place the fork securely on a work surface.

Step 3: Remove the Top Cap

  • Use a T30 Torx driver to remove the top cap from the fork. This allows you to access the air spring system.

Step 4: Drain the Oil

  • Position the fork above a clean oil drain pan and loosen the lowers using a 10mm socket wrench. Allow the oil to drain from both the damper and air-side lower legs.

Step 5: Disassemble the Damper

  • Use a T25 Torx driver to remove the damper unit from the fork. This is essential for cleaning, inspection, and re-oiling. Be careful to keep track of all small parts like washers and seals.

Servicing the Fork

With the fork disassembled, now it’s time to perform the maintenance tasks.

Step 1: Clean All Components

  • Thoroughly clean all parts of the fork using a rag and suspension cleaner. Pay close attention to the stanchions, lowers, and the damper unit. This ensures that no dirt or debris will cause damage during reassembly.

Step 2: Inspect Seals and Bushings

  • Check the seals on the fork for any signs of wear or damage. If the seals are compromised, replace them with a RockShox seal kit designed for the Boxxer Select RC model.
  • Inspect the bushings for any play or roughness. Replace them if necessary to maintain smooth operation.

Step 3: Lubricate and Refill with Oil

  • Lubricate the fork’s bushings and other moving parts with the appropriate suspension grease. Apply suspension fluid to the air spring side and damper according to the specifications in your Boxxer Select RC manual.
  • Ensure that you use the correct type and amount of suspension fluid for both the damper and air spring legs.

Reassembling the Fork

Once the fork components have been cleaned and lubricated, it’s time to reassemble the fork.

Step 1: Reinstall the Damper

  • Carefully reinstall the damper unit into the fork’s lower leg. Ensure that all components such as washers and o-rings are properly placed to prevent leaks.

Step 2: Attach the Lower Legs

  • Reattach the lower legs using the bolts and a torque wrench [paid link] to tighten them to the manufacturer’s specifications. This ensures the correct compression and travel for the fork.

Step 3: Reinstall the Top Cap

  • Reinstall the top cap by hand-tightening it and then using a torque wrench to tighten it according to the manufacturer’s recommended torque value.

Step 4: Reattach the Fork to the Frame

  • Carefully slide the fork back into the frame and secure it with the headset bolts. Ensure the headset is properly adjusted for smooth steering.

Step 5: Reinstall the Brake Caliper and Front Wheel

  • Reinstall the brake caliper and tighten the bolts to the correct torque settings. Then, reinstall the front wheel, ensuring it is properly secured.

Adjusting and Fine-Tuning the Fork

After servicing, it’s crucial to adjust the Boxxer Select RC suspension fork for optimal performance. The Boxxer Select RC features adjustable rebound and compression settings, which allow you to fine-tune your fork for different riding conditions.

Rebound Adjustment

  • Turn the rebound adjuster knob (typically located on the bottom of one of the fork legs) to adjust the rebound speed. For slower rebound, turn the knob clockwise; for faster rebound, turn it counterclockwise. This helps in controlling the fork’s response after it compresses.

Compression Adjustment

  • The Boxxer Select RC features a compression adjustment knob (usually on the other fork leg) that allows you to adjust the fork’s compression damping. Turning the knob clockwise increases the compression damping, making the fork stiffer and less responsive to bumps, while turning it counterclockwise makes the fork more plush and sensitive.

Troubleshooting Common Setup Issues

After reassembling and adjusting the fork, you may encounter some common issues. Here’s how to troubleshoot them:

Issue 1: Fork Feels Too Soft or Too Stiff

  • Cause: Incorrect air pressure or rebound/compression settings.
  • Solution: Double-check your air pressure settings. Adjust the compression and rebound knobs to your riding preferences. Make sure you are using the correct suspension fluid.

Issue 2: Noisy Fork

  • Cause: Lack of lubrication or worn-out seals.
  • Solution: Inspect and lubricate the fork seals. Replace any seals that appear worn or damaged. Clean and lubricate the fork’s internal components to reduce friction.

Issue 3: Fork Not Returning Properly

  • Cause: Incorrect rebound settings or air spring issues.
  • Solution: Adjust the rebound knob to the desired speed. If the fork is still not returning properly, check for air spring or damper issues and replace any damaged parts.

Optimizing Fork Performance

For riders looking to maximize the performance of their Boxxer Select RC fork, consider the following customization options:

Upgrading to High-Quality Seals

  • Upgrading to higher-quality seals can improve the fork’s responsiveness and prevent oil leaks, ensuring long-lasting performance.

Fine-Tuning Suspension Settings

  • Experiment with different rebound and compression settings based on your riding style and terrain. Adjusting these settings can significantly impact comfort and control.

Comparison with Other Fork Models

When compared to similar models in the RockShox range, the Boxxer Select RC offers a great balance between performance and affordability. It stands out for its adjustable compression and rebound settings, as well as its air spring system, which provides excellent ride feel and tuning options. In comparison to other models such as the Boxxer Ultimate [paid link] or the Lyrik, the Select RC provides a more budget-friendly option while still offering high-level performance suitable for most mountain biking needs.

Compatibility with Other Drivetrain Components

The Boxxer Select RC suspension fork is compatible with a wide range of mountain bike drivetrains, including both 1x and 2x systems. It is essential to ensure proper fork offset and alignment with your bike’s geometry to maintain consistent handling and performance. Always check compatibility with your bike’s frame and other suspension components for optimal setup.

By following these detailed instructions, you can effectively service and maintain your Boxxer Select RC suspension fork at home. Regular servicing ensures a smoother ride, improved performance, and extended lifespan of the fork, keeping you ready for your next adventure.