The Fox DHX2 Performance Elite [paid link] is a premium rear shock designed for aggressive riders who demand superior performance on rough terrain. This shock features advanced tuning options that allow you to fine-tune its performance to match your riding style and conditions. In this guide, we’ll walk you through the installation, adjustment, and maintenance of the DHX2 Performance Elite [paid link], as well as troubleshooting common issues, optimizing its setup, and understanding its compatibility with other drivetrain components.

Tools Required

• Fox shock pump
• 5mm Allen wrench [paid link]
• 8mm Allen wrench [paid link]
• Torque wrench [paid link]
• 10mm wrench
• Clean cloth or rag
• Fox suspension grease (or recommended alternative)
• Tuning guide (available on Fox’s website or in the shock’s manual)
• Shock oil (if performing a full rebuild)
• Replacement seals (for rebuilds)

Installation of the Fox DHX2 Performance Elite

Installing the Fox DHX2 Performance Elite is a straightforward process, but it requires attention to detail to ensure the shock is mounted securely and properly aligned with your bike’s geometry.

1. Prepare the Frame: Clean the mounting areas on your bike’s frame where the shock will be installed. Ensure there is no dirt or debris, as this can interfere with the mounting process.
2. Align the Shock: Position the DHX2 shock with the correct orientation (the larger eyelet should typically be mounted at the top).
3. Install the Shock: Insert the shock’s mounting bolts through the shock’s eyelets and into the frame. Tighten the bolts by hand to prevent cross-threading.
4. Torque the Bolts: Use a torque wrench [paid link] to tighten the mounting bolts to the manufacturer’s recommended torque setting (usually 30-35 Nm for DHX2 models). Ensure the bolts are tight, but not overtightened to avoid damaging the shock or the frame.
5. Check for Clearance: After installation, verify that the shock has enough clearance for full compression and that no parts are rubbing against each other.

Adjustment of the DHX2 Performance Elite

The DHX2 Performance Elite offers a range of adjustment options to fine-tune the shock’s performance for different riding styles and terrain. These adjustments affect how the shock behaves during compression and rebound, allowing you to customize the ride feel.

Compression Adjustment

The compression knob adjusts the shock’s resistance to compression. The DHX2 features both low-speed and high-speed compression adjustments.

• Low-Speed Compression: This adjusts the shock’s response to slow compressions, such as when pedaling or descending at low speeds. Turn the knob clockwise to increase resistance, which can help prevent bottoming out on rough trails.
• High-Speed Compression: This adjusts the shock’s response to fast compressions, like when hitting large rocks or drops. Increasing high-speed compression can prevent the shock from bottoming out during big hits.

To adjust compression:

1. Start with the low-speed compression set to about 2 clicks from fully open.
2. Set the high-speed compression to the manufacturer’s recommended setting, usually around 2-3 clicks for general use.
3. Fine-tune these settings based on your riding style and terrain. If you find that the shock is too soft or too harsh, adjust incrementally and test ride.

Rebound Adjustment

The rebound adjustment controls the speed at which the shock returns to its full extension after compression. This adjustment is critical to maintaining control and comfort during the ride.

1. Turn the rebound knob clockwise to slow down the return.
2. Turn the knob counterclockwise to speed up the return.
3. For most riders, the best starting point is around 4 clicks from fully closed. Adjust as needed, depending on your preferences and the type of trail you are riding.

Air Pressure Adjustment

The air pressure in the DHX2 affects its overall performance, especially how the shock reacts to rider weight and terrain. Use the Fox shock pump to adjust the air pressure based on your weight and desired ride feel.

1. Refer to the recommended air pressure settings in the user manual for your rider weight and riding style.
2. To increase air pressure, attach the shock pump to the valve and increase the pressure in small increments.
3. To decrease pressure, release air carefully using the pump’s valve.

Maintenance of the DHX2 Performance Elite

Regular maintenance is essential to keep your DHX2 Performance Elite performing at its best. Here’s how you can maintain your shock:

Cleaning the Shock

After every ride, especially in wet or muddy conditions, clean the shock thoroughly to prevent dirt buildup that can damage seals.

1. Use a clean cloth or rag to wipe down the shock body and components.
2. Avoid using harsh chemicals; warm water and mild soap are sufficient to remove dirt.
3. Inspect the seals and bushings for any signs of wear.

Replacing the Seals

Over time, the seals on the DHX2 may wear out and require replacement. If you notice oil leakage or reduced performance, it’s time to replace the seals.

1. Use a 5mm Allen wrench to remove the shock from the frame.
2. Carefully remove the shock’s air sleeve and disassemble the shock body.
3. Replace the worn seals with new ones and apply a small amount of Fox suspension grease.
4. Reassemble the shock and reinstall it onto the bike, ensuring all bolts are tightened to the recommended torque setting.

Full Rebuild

A full rebuild of the DHX2 Performance Elite should be done every 100-150 hours of riding or when you notice diminished performance. This involves draining the shock oil and replacing internal seals and components.

1. Remove the shock from the bike frame and disassemble it completely.
2. Drain any remaining shock oil and clean the internals with a clean rag.
3. Replace the oil and seals as specified by the Fox rebuild guide.
4. Reassemble the shock and carefully refill it with the recommended oil. Ensure the oil levels are correct to prevent poor shock performance.

Troubleshooting Common Issues

While the DHX2 Performance Elite is built to perform in demanding conditions, issues can arise during normal use. Here are common problems and their solutions:

Bottoming Out

If the shock bottoms out too easily, it could indicate that the air pressure is too low or that the compression settings need adjustment.

• Solution: Increase the air pressure slightly or adjust the low-speed compression setting to a firmer position. Test the shock to see if the issue resolves.

Too Harsh of a Ride

If the shock feels too harsh or stiff, it may be over-damped or over-pressurized.

• Solution: Decrease the air pressure or back off the compression settings to allow the shock to absorb more impacts.

Rebound Too Fast/Slow

If the rebound is too fast, you may feel a lack of control, while a slow rebound can make the shock feel sluggish.

• Solution: Adjust the rebound knob until you achieve a balanced, controlled return speed. Start with the recommended setting and fine-tune based on your experience.

Customization and Optimization

The DHX2 Performance Elite offers ample opportunities for riders to optimize their setup for better performance. Whether you are looking for a plush ride on technical descents or a firmer setup for aggressive pedaling, adjusting your shock’s settings can have a significant impact.

Fine-Tuning for Terrain

• For downhill and aggressive trails: Increase low-speed compression and high-speed compression settings, reduce air pressure, and slow the rebound slightly.
• For cross-country and climbing: Decrease compression settings and use higher air pressure to improve pedaling efficiency and prevent bobbing.

Compatibility with Other Drivetrain Components

The DHX2 Performance Elite is compatible with most modern mountain bikes. However, ensuring compatibility with your bike’s frame design and other suspension components is essential.

1. Check the Shock’s Eyelet Type: Ensure that the DHX2 is compatible with your bike’s shock mounting hardware.
2. Frame Geometry: Some frame geometries may require specific shock lengths and stroke options. Verify the shock’s dimensions before purchase.
3. Other Suspension Components: If your bike uses a specific linkage or suspension system (like Fox’s DPX2 or X2), make sure that the DHX2’s tuning options complement the overall suspension performance.

By understanding these factors and adjusting your settings accordingly, you can ensure that the DHX2 Performance Elite provides optimal performance for your riding style and bike setup.