Step-by-Step Rear Shock Oil Change for Float DPS Performance

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The Fox Float DPS Performance [paid link] rear shock is renowned for its performance and adaptability, offering a smooth ride and precise control. Regular maintenance of this shock, particularly oil changes, is crucial to ensure its longevity and optimal performance. This guide provides detailed, expert-level instructions on performing an oil change for the Float DPS Performance [paid link] rear shock.

Tools Required

  • 5mm Allen wrench [paid link]
  • 8mm Allen wrench [paid link]
  • 10mm open-end wrench
  • Fox Float shock pump
  • A torque wrench [paid link]
  • T25 Torx driver
  • Oil (Fox 10wt or Fox recommended fluid)
  • Shock oil syringe
  • Isopropyl alcohol
  • Clean rags
  • Basin or container for oil catch

Preparing for the Oil Change

Before starting, it is essential to prepare both your workspace and the shock.

  1. Remove the Shock from the Bike: Begin by detaching the rear shock from the bike. Use a 5mm Allen wrench to remove the mounting bolts at both ends of the shock. Keep these bolts in a safe place as you will need them later.
  2. Set Up Your Work Area: Place your shock on a clean surface. Ensure you have all the necessary tools within reach and a container to catch the old oil.
  3. Check for Any Visible Damage: Inspect the shock for any signs of wear, such as leaks or visible damage to the damper or air sleeve. If you notice any, it might be best to consult a professional before continuing with the oil change.

Draining the Old Oil

The first step in the oil change process is to drain the existing oil from the rear shock.

  1. Remove the Air Sleeve: Use the 10mm open-end wrench to unscrew the air sleeve from the shock body. This will expose the damper cartridge inside the shock.
  2. Drain the Oil: Place the shock over your container and let the oil drain. It is essential to give the shock a few minutes to fully empty, ensuring that all the old oil is removed from the internal components.
  3. Clean the Shock: Use isopropyl alcohol and a clean rag to wipe down the shock components, including the air sleeve and damper. This helps to remove any debris or residual oil, preventing contamination during reassembly.

Replacing the Oil

After draining the old oil and cleaning the shock, it’s time to replace the oil.

  1. Reinstall the Damper Cartridge: Carefully insert the damper cartridge back into the shock body. Ensure that it is seated properly and securely within the housing.
  2. Add New Oil: Use a shock oil syringe to fill the shock with the recommended Fox 10wt fluid. Be sure to add the correct amount of oil as specified in the Float DPS Performance service manual. Overfilling can cause excessive pressure buildup, while underfilling will result in poor performance.
  3. Seal the Air Sleeve: Once the shock is filled with oil, screw the air sleeve back onto the shock body. Use your 10mm open-end wrench to tighten it properly, but avoid over-tightening, which could damage the threads.

Reassembling and Testing

Now that the oil has been replaced, it’s time to reassemble the shock and test it.

  1. Reinstall the Shock on the Bike: Align the shock with the mounting points on your bike’s frame and insert the mounting bolts. Tighten these bolts to the manufacturer’s recommended torque settings using a torque wrench [paid link] for accuracy.
  2. Re-Inflate the Shock: Use a Fox Float shock pump to re-inflate the shock to your desired pressure, based on your rider weight and suspension setup. This will ensure that the shock performs correctly during use.
  3. Test the Shock: After installation, compress the shock several times to ensure that it is functioning smoothly. Check for any unusual sounds or resistance that could indicate a problem. If everything feels normal, you’re ready to ride.

Troubleshooting Common Issues

Even after a successful oil change, certain issues may arise that affect the performance of your shock. Here are a few common problems and how to address them:

  1. Shock Not Holding Air: If the shock fails to hold air, check the seals on both the air sleeve and the shock body. If they appear damaged, you may need to replace them. It’s also worth checking for any leaks around the valve and fittings.
  2. Excessive Compression or Rebound: If the shock feels too firm or slow to rebound, the oil may not have been properly added. Double-check the oil level and ensure you used the correct amount for optimal performance.
  3. Leaking Oil: If oil is leaking from the shock, inspect the seals around the air sleeve and damper. Replacing these seals can resolve this issue.

Customizing the Float DPS Performance for Better Performance

The Fox Float DPS Performance rear shock is highly customizable, allowing you to adjust settings based on your riding style and terrain.

  1. Adjusting the Compression and Rebound Damping: The Float DPS Performance shock features a 3-position compression adjustment (Open, Medium, and Firm). You can tune the compression to suit your riding preferences, whether you’re tackling rough trails or smooth climbs.
  2. Volume Spacers: Volume spacers can be added to the shock to change the air spring curve, offering better control on bigger hits and a more progressive feel. Adding or removing spacers allows you to fine-tune the shock’s performance.
  3. Rebound Adjustments: The rebound setting can also be adjusted to control the shock’s return speed after compression. Experimenting with rebound adjustments can help optimize the shock for different terrain types and riding conditions.

Comparing the Float DPS Performance with Other Models

When comparing the Float DPS Performance to other shocks in the Fox lineup, such as the Float X or the DHX2, it’s essential to understand the differences in performance, adjustability, and intended use.

  • Float DPS Performance vs Float X: The Float X offers a more advanced damper with increased sensitivity, making it a better choice for aggressive riders or those tackling technical terrain. However, the Float DPS Performance is more affordable and offers sufficient adjustability for most riders.
  • Float DPS Performance vs DHX2: The DHX2 is a coil-spring shock and is better suited for riders seeking a plush, progressive feel with high-end damping. The Float DPS Performance, being air-sprung, is lighter and offers more adjustability but may not provide the same smoothness in extreme conditions as the DHX2.

Compatibility with Other Drivetrain Components

The Float DPS Performance rear shock is designed to work seamlessly with most modern mountain bike drivetrains. However, when upgrading or replacing parts, it is crucial to ensure compatibility with your bike’s frame and other suspension components.

  • Frame Compatibility: Always check the shock’s eyelet size and stroke length to ensure compatibility with your frame. Incorrect size can lead to poor performance or damage.
  • Drivetrain Considerations: While the shock does not directly interact with the drivetrain, it’s important to ensure that the overall suspension setup complements your drivetrain. A balanced suspension setup can improve your bike’s handling and efficiency, enhancing the performance of your drivetrain.

By following these detailed steps, you can ensure that your Fox Float DPS Performance rear shock is properly maintained, optimized, and functioning at its best. Regular oil changes and proper maintenance will help extend the life of your shock and keep your bike performing at peak [paid link] levels.