Upgrading Your Suspension with DHX Factory Rear Shocks

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The DHX Factory rear shock from Fox is designed to deliver an exceptional level of performance and control, making it a great choice for riders seeking a high-quality suspension upgrade. Whether you’re looking to replace your old shock or simply upgrade to a model with more advanced features, the DHX Factory rear shock offers both reliability and precision. This guide will cover everything you need to know about installation, adjustment, maintenance, troubleshooting, and optimization of the DHX Factory rear shock.

Tools Required

  • Fox DHX Factory rear shock
  • Shock pump (compatible with Fox shocks)
  • 5mm and 6mm Allen wrenches [paid link]
  • Torque wrench [paid link]
  • Clean rag
  • Suspension grease
  • New shock bushings (if necessary)

Installing the DHX Factory Rear Shock

The installation of the Fox DHX Factory rear shock requires careful attention to detail, as improper installation can result in damage or suboptimal performance. Follow these steps for a smooth installation process:

  1. Prepare the Bike
    • Remove the old rear shock, ensuring the bike is properly secured on a work stand. If you’re replacing the shock, make sure to remove any components that may obstruct access to the shock mount.
  2. Inspect the Shock Mounts
    • Clean the shock mounts on the frame and inspect them for any signs of wear or damage. If the mounts are worn, consider replacing them or using new shock bushings.
  3. Lubricate the Shock Bushings
    • If you are using new bushings, apply a thin layer of suspension grease to the outer edges of the bushings to ensure smooth installation and reduce friction.
  4. Install the Shock
    • Slide the DHX Factory rear shock into place, aligning the mounting holes with the frame. Ensure that the shock is oriented properly according to your bike’s design and frame geometry.
  5. Secure the Shock
    • Tighten the bolts with a 5mm or 6mm Allen wrench [paid link] to secure the shock. Use a torque wrench [paid link] to tighten the bolts to the manufacturer-recommended torque values to prevent over-tightening or under-tightening, which can affect shock performance.
  6. Reinstall Any Removed Components
    • Once the shock is securely in place, reinstall any components you removed for access, such as the rear wheel or chain.
  7. Test the Installation
    • Before riding, test the suspension to ensure it is functioning properly. Check for any unusual noises or movements, and double-check the shock mounting to ensure it’s secure.

Adjusting the DHX Factory Rear Shock

The DHX Factory rear shock features advanced tuning capabilities, allowing you to fine-tune the suspension to your preferred ride style. Here are the key adjustment points:

Air Pressure

Adjusting the air pressure is essential for getting the right sag (the amount the shock compresses under your weight). To set the air pressure:

  1. Measure your sag by compressing the shock under your weight and observing the amount of travel used. Fox recommends about 25-30% of the shock’s total travel for optimal performance.
  2. Adjust the air pressure using a shock pump. Add or release air to achieve the desired sag.

Rebound Damping

The DHX Factory features a rebound adjustment knob, which controls how quickly the shock returns to its full extension after compression. To adjust the rebound damping:

  1. Turn the knob clockwise to slow the rebound or counterclockwise to speed it up.
  2. Make small adjustments and test the shock to find a setting that feels right for your riding style.

Compression Damping

Compression damping controls the shock’s resistance to compression under force. To adjust:

  1. Turn the compression adjustment knob clockwise for more resistance or counterclockwise for less.
  2. Fine-tune the setting based on your riding terrain. Softer settings are ideal for smoother trails, while firmer settings work better for rougher, more aggressive terrain.

Maintaining the DHX Factory Rear Shock

Regular maintenance is crucial for keeping your DHX Factory rear shock in top working condition. Here’s a breakdown of essential maintenance tasks:

Cleaning

  1. After each ride, clean the shock using a clean rag. Wipe down the shock body and mount area to remove dirt and debris.
  2. Avoid using high-pressure water directly on the shock, as this can force dirt and moisture into the seals.

Checking for Leaks

Periodically inspect the shock for any signs of oil leaks or damage. Leaks can affect performance and indicate that the seals may need replacement.

Lubricating the Shock

Every few rides, it’s important to lubricate the shock bushings and mounts. This reduces wear and tear and ensures smooth movement of the shock.

Shock Service

Fox recommends having your DHX Factory rear shock serviced every 50-100 hours of ride time, depending on usage. A professional service will involve disassembling the shock, cleaning, and replacing any worn internal components such as seals, oils, and bushings.

Troubleshooting Common Issues

While the DHX Factory rear shock is a highly reliable component, it’s not immune to issues. Below are some common problems and their solutions:

No Compression

  • Issue: The shock doesn’t compress properly during use.
  • Solution: Check if the air pressure is too high or if the compression damping is set too firm. Adjust both settings as needed.

Excessive Rebound

  • Issue: The shock rebounds too quickly after compression.
  • Solution: Adjust the rebound damping knob to slow the rebound speed.

Leaks

  • Issue: Oil is leaking from the shock.
  • Solution: Inspect the seals for damage or wear. If necessary, have the shock serviced to replace the seals.

Loss of Travel

  • Issue: The shock does not compress fully or has reduced travel.
  • Solution: Check the air pressure and adjust it to the recommended level. If the issue persists, the shock may need to be serviced to check for internal damage.

Customizing and Optimizing Performance

The DHX Factory rear shock offers numerous tuning options for riders who want to optimize their bike’s suspension performance. Here are some tips for customizing the shock to your riding preferences:

Tuning for Comfort

For riders seeking a more comfortable ride, reduce the air pressure slightly to increase sag, and soften the compression damping. This will result in a smoother, more forgiving ride, especially on rough terrain.

Tuning for Performance

For riders focused on performance and handling, increase the air pressure to reduce sag, and dial in a firmer compression setting. This setup improves stability and reduces bottoming out during aggressive riding.

Adjusting for Terrain

Tailor your settings based on the type of terrain you typically ride. Softer settings work well on smooth, flowy trails, while stiffer settings are ideal for technical or downhill riding.

Comparison with Other Rear Shocks

While the DHX Factory rear shock stands out in terms of adjustability and performance, it’s important to compare it to similar models to determine the best option for your needs:

  • Fox Float X2: Known for its lightweight design, the Float X2 offers excellent performance on a wide variety of terrains, but it may not have the same level of high-speed compression adjustment as the DHX Factory.
  • RockShox Super Deluxe Ultimate: This shock is comparable to the DHX Factory in terms of performance but features a different damper design. The RockShox shock tends to offer a more linear feel in certain conditions.
  • Marzocchi Bomber CR: While a more budget-friendly option, the Bomber CR lacks the precise tuning options available on the DHX Factory but still delivers reliable performance for less aggressive riders.

Compatibility with Other Drivetrain Components

When upgrading your suspension with the DHX Factory rear shock, it’s important to ensure compatibility with your bike’s other drivetrain components. This shock is compatible with most modern mountain bike frames that accept a standard eyelet or trunnion mount. Ensure that the shock’s eyelet length and stroke are suitable for your frame geometry to maintain the correct suspension performance.

In conclusion, the Fox DHX Factory rear shock is a high-performance upgrade for any serious rider looking to improve their bike’s suspension. By following proper installation and adjustment techniques, maintaining the shock regularly, troubleshooting issues as they arise, and optimizing settings for your riding style, you’ll maximize the performance and lifespan of your DHX Factory rear shock.