How to Rebuild Your DHX2 Performance Elite Rear Shock at Home

Posted on
in Uncategorized

The Fox DHX2 Performance Elite [paid link] rear shock is a highly regarded suspension component that offers excellent performance for riders seeking a balance between comfort and control on rough terrain. Over time, however, this shock will require maintenance and rebuilding to ensure optimal performance. In this guide, we will walk you through the step-by-step process of rebuilding your DHX2 Performance Elite [paid link] rear shock at home, including tools required, installation, adjustment, troubleshooting, and compatibility considerations.

Tools Required

  • DHX2 rebuild kit (includes seals, oil, and necessary components)
  • 8mm hex wrench
  • Torque wrench [paid link]
  • 5mm hex wrench
  • Needle nose pliers
  • Fox oil syringe
  • Fox Float Fluid (or the fluid recommended by Fox)
  • Compressed air (for cleaning)
  • Small flathead screwdriver
  • Scissors or razor blade (for cutting seals)
  • Clean cloth or rag

Disassembling the DHX2 Performance Elite Rear Shock

Before starting the rebuild process, make sure the shock is removed from the bike and completely clean. Any debris or dirt can damage the internals during disassembly.

1. Remove the Shock from the Bike

  • First, remove the shock from your bike by using the appropriate wrenches to detach the mounting bolts from the frame. Be cautious of the shock’s positioning and keep it away from the frame to avoid scratches or further damage.

2. Drain the Air Pressure

  • Use a shock pump to release all the air from the shock before beginning disassembly. This ensures safety and prevents any unintended pressure release during the rebuild process.

3. Disassemble the Shock

  • Begin by using an 8mm hex wrench to remove the air can. Hold the main body of the shock securely with one hand while loosening the air can with the other.
  • Once removed, gently slide off the air sleeve and inspect for any visible damage or excessive wear.

Cleaning and Inspecting the Shock Components

Before proceeding with the rebuild, thoroughly clean all parts of the shock to remove any contaminants.

1. Clean the Shock Shaft

  • Use compressed air or a clean cloth to remove any dirt, debris, or old grease from the shock shaft. Inspect it for any signs of wear or scoring, which could affect the shock’s performance.

2. Inspect the Air Can

  • Check the air can for any signs of wear, cracks, or damage. If you notice any issues, it may be time to replace the air can. You should also check the air can seals to ensure they are intact and not excessively worn.

3. Examine the Piston and Shaft

  • Inspect the piston and shaft for any visible damage, scratches, or pitting. If there are any noticeable imperfections, it’s recommended to replace these parts as well.

Rebuilding the DHX2 Performance Elite Rear Shock

1. Install New Seals

  • Using the Fox DHX2 rebuild kit, carefully install new seals on the shock body. Be sure to lubricate the seals lightly with suspension fluid before installation to avoid damaging them during assembly.
  • Take extra care when installing the main air can seals. These seals are critical for maintaining proper air pressure and fluid retention.

2. Apply Suspension Fluid

  • Use the Fox Float Fluid (or the recommended fluid) to lubricate the internals of the shock. Apply a small amount of fluid to the shaft, the damper rod, and the seals.
  • Fill the shock body with the correct amount of suspension fluid as specified in the rebuild kit instructions or the manufacturer’s guidelines.

3. Reassemble the Shock

  • Carefully slide the air can back onto the shock body, ensuring that all parts align correctly.
  • Reinstall the air can cap and tighten it with an 8mm hex wrench. Follow the torque specifications outlined in the Fox manual to ensure proper tightening without over-torquing.
  • Once the shock is fully reassembled, re-inflate the shock to the recommended air pressure using a shock pump.

Adjusting the DHX2 Performance Elite Rear Shock

After rebuilding, it’s essential to properly adjust the shock to ensure it performs optimally on the trail.

1. Set the Rebound Damping

  • Start by adjusting the rebound damping dial located at the bottom of the shock. Turn the dial clockwise to slow down the rebound and counterclockwise to speed it up. Set the rebound to a medium setting and fine-tune from there based on your riding style and terrain.

2. Set the Compression Damping

  • The compression damping dial controls how the shock responds to impacts. Turning the dial clockwise increases compression, while turning it counterclockwise decreases it. Start with a mid-range setting and adjust to your preference.

3. Set the Air Pressure

  • Use a shock pump to adjust the air pressure according to your rider weight and the intended use of the bike. A higher air pressure provides a firmer ride, while a lower pressure offers more compliance and comfort.

Troubleshooting Common DHX2 Performance Elite Rear Shock Issues

1. Loss of Air Pressure

  • If you notice a decrease in air pressure over time, check the seals for any damage or wear. If the seals are compromised, they will need to be replaced. Additionally, inspect the air valve for any leaks.

2. Inconsistent Rebound or Compression Damping

  • If the rebound or compression damping is inconsistent or feels sticky, this may indicate a need for more thorough cleaning and lubrication of the shock internals. It’s also possible that the damping oil has degraded and needs to be replaced.

3. Excessive Noise

  • Unusual noises from the shock, such as clunking or knocking, can indicate internal damage or debris inside the shock. Disassemble the shock, clean it thoroughly, and check for any damaged parts.

Customization and Optimization for Better Performance

To further optimize the performance of your DHX2 Performance Elite rear shock, consider the following modifications and tuning tips:

  • Change the Oil Viscosity: Depending on your riding conditions, switching to a higher or lower viscosity oil can adjust the damping characteristics of the shock, making it more responsive or firmer.
  • Adjust the Volume Spacers: Volume spacers control the progression of the shock’s travel. Adding or removing spacers allows you to fine-tune the shock’s response to different types of terrain, making it more progressive or linear.
  • Fine-tune the Air Pressure: Adjust the air pressure slightly based on your riding style. If you ride aggressively or on rough terrain, a higher pressure will provide more support. For smoother, lighter rides, a lower pressure can offer better comfort.

Compatibility with Other Drivetrain Components

The DHX2 Performance Elite rear shock is compatible with a wide range of modern mountain bikes, but compatibility with other drivetrain components should always be confirmed before installation. Ensure that the shock’s mount type and stroke length are suitable for your frame. Additionally, consider the shock’s travel and spring rate when matching it with your fork and wheel size.

It’s important to check the shock’s specifications and compare them with the frame’s requirements to ensure proper functionality and alignment. If you are unsure, consult your bike’s manual or a professional mechanic to confirm compatibility.

By following these steps, you can successfully rebuild your DHX2 Performance Elite rear shock at home, restoring its performance and extending its lifespan. With regular maintenance, this shock will continue to provide top-tier suspension for all your riding adventures.