The Fox DHX2 Performance Elite rear shock is a high-performance shock designed for mountain bikers seeking exceptional control and comfort on challenging terrains. Its advanced design provides riders with the ability to fine-tune damping settings and adjust to various riding conditions. Proper maintenance and adjustments are crucial to keeping the shock functioning at its best. This guide will walk you through the installation, maintenance, troubleshooting, and optimization of your DHX2 Performance Elite rear shock.

Tools Required

• 8mm and 10mm wrenches
• 5mm Allen wrench [paid link]
• Shock pump (for setting air pressure)
• Torque wrench [paid link]
• Isopropyl alcohol (for cleaning)
• A soft cloth
• Suspension fluid (recommended by Fox)
• Fox shock fluid for damping adjustments
• Fox rebuild kit (for internal maintenance)

Installation of the DHX2 Performance Elite Rear Shock

Installing the DHX2 Performance Elite rear shock requires attention to detail to ensure proper alignment and secure attachment. Follow these steps to correctly install the shock:

1. Prepare the Bike Frame: Before installing the shock, make sure the bike frame is clean and free from dirt and debris. This will prevent any particles from interfering with the shock’s performance.
2. Align the Shock: Carefully align the shock with the mounting points on the frame and the swingarm. Ensure the shock’s eyelet (the small metal ring on each end) matches the frame’s shock mounts.
3. Insert the Shock: Slide the shock into position, ensuring the mounting hardware on the frame and shock are aligned.
4. Secure the Shock: Tighten the bolts with a 5mm Allen wrench [paid link] or the appropriate size tool. Ensure you apply the correct torque settings as per the manufacturer’s recommendation. Do not over-tighten, as this could damage the shock or the frame.
5. Check for Proper Movement: After securing the shock, check for free movement. The shock should compress and rebound smoothly. If there is any resistance, recheck the mounting to ensure there are no obstructions.

Setting Up and Adjusting the DHX2 Performance Elite Rear Shock

Adjusting the DHX2 rear shock ensures that you get the optimal performance based on your weight, riding style, and terrain. Fox’s DHX2 Performance Elite shock is equipped with multiple tuning options for both compression and rebound settings.

Air Pressure Adjustment

The DHX2 Performance Elite uses air pressure to adjust the overall suspension performance. To set the correct air pressure:

1. Use a Shock Pump: Attach the shock pump to the air valve and set the pressure based on your weight. Refer to the Fox manual for a recommended air pressure range based on rider weight.
2. Check Pressure Regularly: Over time, air pressure can drop due to temperature changes or usage. Ensure the air pressure is checked before each ride to maintain optimal performance.

Compression Damping Adjustment

The DHX2 shock features external compression damping controls, allowing riders to adjust how the shock reacts to impacts.

1. Low-Speed Compression: The low-speed compression adjusts the shock’s response to small bumps and pedal strokes. To adjust, use the dial located near the shock’s body. Turning it clockwise increases compression, making the shock stiffer and less responsive, while turning it counterclockwise makes the shock more plush.
2. High-Speed Compression: This controls how the shock responds to larger hits. It’s typically adjusted in conjunction with the low-speed compression. For rougher terrains, you may want to increase high-speed compression for better control and less bottoming out.

Rebound Damping Adjustment

Rebound damping controls how quickly the shock extends after being compressed. Setting the correct rebound helps avoid bucking or excessive bouncing after impacts.

1. Adjust the Rebound Dial: The rebound control is located on the bottom of the shock. Turning the dial clockwise slows the rebound, while turning it counterclockwise speeds it up.
2. Testing and Fine-Tuning: After making initial adjustments, test the shock by pressing down on the rear end of the bike and letting it rebound. Fine-tune until the shock extends smoothly and doesn’t bounce uncontrollably.

Maintaining the DHX2 Performance Elite Rear Shock

Proper maintenance ensures the longevity and performance of your DHX2 rear shock. Regular maintenance is essential to keep it functioning optimally and prevent costly repairs.

Cleaning the Shock

Cleaning your shock is a simple yet crucial step in maintaining its performance.

1. Clean the Shock Body: After each ride, wipe down the shock body with a clean, soft cloth to remove dirt and debris. This prevents grime from building up and affecting the shock’s movement.
2. Clean the Shock Seals: Dirt can get trapped in the shock seals, causing them to wear out prematurely. Use isopropyl alcohol and a soft brush to clean the seals. Be gentle to avoid damaging the seals.

Replacing the Shock Oil

Over time, the shock oil degrades and loses its effectiveness. Replacing the shock oil keeps the damping system performing at its best.

1. Disassemble the Shock: Use the proper tools to remove the shock from the bike and disassemble it according to Fox’s instructions.
2. Drain Old Oil: Carefully drain the old oil from the shock and clean the internal parts with isopropyl alcohol.
3. Rebuild with New Oil: Refill the shock with fresh Fox-approved oil, ensuring it is at the recommended level for your specific shock model.

Rebuilding the Shock Internally

For advanced maintenance or if the shock is not performing as it should, internal maintenance may be required.

1. Remove the Shock from the Frame: Disconnect the shock from the bike frame and fully disassemble it according to the manual.
2. Replace Damaged Parts: Inspect the internal components, including the seals and bushings. Replace any damaged or worn parts with the Fox rebuild kit.
3. Lubricate Internal Components: Apply the recommended lubrication to the internal moving parts to ensure smooth operation.

Troubleshooting Common DHX2 Performance Elite Rear Shock Issues

While the DHX2 rear shock is designed for durability and performance, some issues may arise due to improper setup or wear. Here are some common problems and how to troubleshoot them:

Loss of Air Pressure

Problem: If you notice a decrease in suspension performance, such as the shock feeling too soft or bottoming out, this may be due to air loss.

Solution: Check the air pressure using a shock pump. If the pressure is low, inflate the shock to the recommended pressure. If the shock continues to lose air, inspect the seals for damage and replace them if necessary.

Poor Rebound Performance

Problem: If the shock is bouncing too much or not rebounding fast enough, the rebound setting may need adjustment.

Solution: Adjust the rebound dial to fine-tune the shock’s extension speed. If the problem persists, check the shock oil levels and replace if needed.

Noisy Shock

Problem: A noisy shock often indicates friction between internal components or dirty seals.

Solution: Clean the shock and lubricate the seals. If the noise persists, disassemble the shock and inspect the internal parts for wear. Replace any damaged components.

Customizing Your DHX2 Performance Elite Rear Shock for Better Performance

To get the most out of your DHX2 rear shock, customization is key. Adjust the shock settings to match your riding style and terrain.

Adjusting for Aggressive Riding

For riders who prefer aggressive downhill riding or frequent drops, increase the compression settings for better control and prevent bottoming out. A stiffer setting will help absorb big hits without losing control.

Adjusting for Cross-Country Riding

For cross-country riders seeking more comfort and plushness, dial back the compression settings and focus on achieving a smoother rebound to reduce pedal feedback.

Compatibility with Other Drivetrain Components

The DHX2 rear shock is designed to work seamlessly with a variety of drivetrain systems. However, it’s important to check compatibility when setting up your bike. Make sure the shock’s mounting dimensions are compatible with your bike frame. If you have a bike with a different shock mount type, you may need specific hardware or adapters.

Conclusion

The Fox DHX2 Performance Elite rear shock offers incredible customization options, allowing riders to fine-tune their suspension system for various terrains and riding styles. By following the installation, adjustment, and maintenance steps outlined in this guide, you can keep your shock in top condition for years of smooth and controlled riding. Regular maintenance and troubleshooting ensure that your shock continues to perform at its best, no matter how challenging the trails get.