The Fox DHX2 Factory rear shock is known for its exceptional performance, durable construction, and precise adjustments. Maintaining this rear shock is crucial for optimizing its longevity and ensuring the best possible riding experience. In this guide, we will cover various aspects of maintaining, adjusting, and troubleshooting your DHX2 Factory shock, as well as providing tips on how to get the most out of it.

Tools Required

• 8mm and 10mm wrenches
• Torque wrench [paid link]
• Fox-specific shock pump
• 5mm Allen wrench [paid link]
• Grease (recommended for suspension components)
• Cleaning cloths
• Isopropyl alcohol (for cleaning)
• Suspension fluid (Fox recommended)
• Small brush (for cleaning)
• Rear shock bushing removal tool
• Teflon tape (optional for sealing)

Installation of the DHX2 Factory Rear Shock

Installing the Fox DHX2 Factory rear shock requires attention to detail to ensure optimal performance. The rear shock should be mounted securely and in alignment with the frame.

1. Prepare the Shock: Before installation, ensure the shock is properly lubricated. Apply a small amount of grease to the shock’s mounting hardware and pivot areas. This will prevent corrosion and ease the installation process.
2. Install the Shock on the Frame: Align the shock with the frame mounts, ensuring that the hardware is not cross-threaded. Use the 8mm and 10mm wrenches to tighten the bolts gently. Be sure to follow the manufacturer’s torque specifications to avoid over-tightening.
3. Attach the Shock to the Linkage: Insert the shock into the frame’s linkage and fasten the bolts securely. Again, it is essential to use a torque wrench [paid link] to apply the proper amount of pressure to the bolts.
4. Check for Smooth Movement: Once the shock is mounted, check for smooth suspension movement by pressing down on the frame. If there’s any binding or unusual resistance, double-check the alignment of the shock and linkage.

Adjusting the DHX2 Factory Rear Shock

The DHX2 Factory rear shock is equipped with several adjustment dials that allow riders to fine-tune their suspension to their specific needs. Proper adjustment will enhance both comfort and performance.

1. Air Pressure Adjustment

• Use the Fox-specific shock pump to adjust the air pressure. The correct air pressure is dependent on your weight and riding style. Start by setting the recommended pressure based on your body weight and adjust for comfort.
• To check the pressure, attach the shock pump to the valve, add or release air as needed, and then remove the pump. Always check that the air pressure stays consistent after adjustments.

2. Rebound Adjustment

• The DHX2 features a rebound adjuster at the base of the shock. This adjustment controls how quickly the shock returns after compression.
• Turning the rebound knob clockwise will slow down the return, while turning it counterclockwise will speed it up. Test the shock by cycling through several compressions to find the ideal setting for your riding style.

3. Compression Adjustment

• The DHX2 offers both high and low-speed compression adjustments. Use the high-speed compression to control the shock’s performance on fast impacts, such as drops and hits. The low-speed compression adjustment is ideal for fine-tuning the shock for smoother terrain.
• Start with the mid-range settings and adjust gradually. More compression will increase control and stability, while less will improve sensitivity and plushness.

4. Spring Rate Selection

• While the DHX2 comes with a coil spring, the spring rate may need to be adjusted based on your riding style and terrain preferences. Choose a spring that suits your weight and riding type to ensure proper support without causing bottoming out.

Maintenance of the DHX2 Factory Rear Shock

Regular maintenance is essential for keeping your Fox DHX2 Factory rear shock in top condition. The shock is built to endure rough conditions, but regular service will ensure its longevity and performance.

1. Cleaning the Shock

• After every ride, it’s important to clean the shock to remove dirt and debris that may affect performance. Use a clean cloth to wipe down the shock body, and use a small brush to clean around the seals.
• If there’s heavy buildup, use isopropyl alcohol to gently clean the shock. Avoid using abrasive materials that could damage the shock’s finish.

2. Lubricating the Shock

• Apply lubrication to the shock’s pivot points and mounting hardware. This will help prevent rust and reduce friction, improving the shock’s overall performance. Use a small amount of grease that is compatible with suspension components.

3. Changing the Suspension Fluid

• Suspension fluid should be replaced periodically to maintain the shock’s performance. The DHX2 uses specific suspension fluid, so be sure to use the recommended fluid for optimal results.
• To change the fluid, remove the shock from the bike, and carefully follow the manufacturer’s procedure for draining and refilling the shock. This is a more advanced task and might require professional service if you are unfamiliar with shock internals.

4. Inspecting the Seals

• Check the shock’s seals regularly for signs of wear or damage. If you notice oil leaking from the shock, it may indicate that the seals need to be replaced. Replacing seals promptly will help maintain proper shock function.

Troubleshooting Common Set-Up Issues

If your DHX2 Factory rear shock is not performing as expected, several issues could be causing the problem. Below are some common issues and how to resolve them.

1. Shock Not Rebounding Properly

• If the shock is not rebounding correctly, the rebound damping may be set too low. Adjust the rebound knob clockwise to slow down the rebound and test the shock again.
• Another cause could be insufficient air pressure. Double-check the air pressure and adjust accordingly.

2. Bottoming Out

• If you’re experiencing bottoming out, it could be due to an incorrect spring rate or inadequate compression settings. Consider adjusting the compression or replacing the spring with one of a higher rate.
• Also, check your riding style and terrain. More aggressive riding may require a firmer setting.

3. Excessive Sag

• Excessive sag may indicate that the air pressure is too low. Increase the air pressure in small increments and test the shock after each adjustment until you achieve the desired sag.

4. Unusual Noises

• If the shock is making unusual noises, inspect the bushings and mounting hardware. Worn bushings can cause noise and affect shock performance. Replace the bushings if necessary.

Customization and Optimization for Better Performance

To maximize the performance of your DHX2 Factory rear shock, fine-tuning it to your specific needs is crucial. There are several ways to optimize the shock for better handling and comfort.

1. Personalized Compression Settings

• Customize the high and low-speed compression settings based on your riding style and the terrain you frequently ride on. Tighter compression settings are ideal for rough, technical trails, while looser settings provide a more plush feel for smoother terrain.

2. Adjusting Rebound for Different Trails

• Adjust the rebound depending on the trail conditions. For downhill or aggressive riding, a slower rebound will provide more control. For cross-country or smoother trails, faster rebound can help with efficiency and flow.

3. Spring Rate Based on Riding Style

• A softer spring rate is great for lighter riders or those seeking a more plush feel. For heavier riders or those riding aggressive trails, a firmer spring rate will prevent bottoming out and improve support.

Compatibility with Other Drivetrain Components

When pairing the DHX2 Factory rear shock with other drivetrain components, it’s essential to ensure compatibility for optimal performance.

• Frame Compatibility: Ensure that your bike frame is compatible with the DHX2’s mounting hardware and shock length. Refer to your bike’s frame specifications to verify the correct dimensions.
• Linkage Compatibility: Make sure the shock is compatible with the suspension linkage system of your bike. This will affect how the shock performs and how much travel you’ll have.
• Other Components: The DHX2 pairs well with most high-performance drivetrain components. However, make sure your rear shock is properly integrated into the suspension system and not causing any interference with other parts.

By following these tips for installation, adjustment, maintenance, and troubleshooting, you can extend the life of your Fox DHX2 Factory rear shock and enjoy smooth, efficient rides for years to come.