The Fox DHX Factory [paid link] rear shock is known for its performance, adjustability, and durability, making it a go-to choice for riders looking to maximize their bike’s suspension performance. In this guide, we will explore the installation, maintenance, and troubleshooting of the DHX Factory [paid link] rear shock, as well as tips for customization and optimization. This article will also compare it to similar models to help riders decide if this shock is the best fit for their needs.
Tools Required
- 5mm and 8mm Allen wrenches [paid link]
- Torque wrench [paid link]
- Shock pump
- Grease
- Soft cloth for cleaning
- Replacement seals or air sleeve oil (for maintenance)
Installation of the DHX Factory Rear Shock
Installing the Fox DHX Factory rear shock is a straightforward process, but it requires attention to detail to ensure optimal performance. Follow these steps for a successful installation.
- Remove the Existing Shock
- First, remove the old rear shock by loosening the mounting bolts on both the upper and lower shock eyelets using an 8mm Allen wrench [paid link].
- Once the bolts are removed, carefully take the shock off the bike frame. You may need to support the frame while doing this to avoid damaging the frame or other components.
- Prepare the New Shock
- Before installing the DHX Factory shock, ensure the air pressure is set according to your weight and riding style. Use a shock pump to adjust the pressure through the valve on the shock’s body.
- Apply a small amount of grease to the shock’s mounting hardware to ensure smooth installation and prevent creaking.
- Mount the Shock to the Frame
- Align the shock’s upper and lower eyelets with the frame’s shock mounts.
- Insert the bolts through the eyelets and secure them with the proper torque using a torque wrench [paid link] (consult the manufacturer’s torque specifications, typically 250-300 in-lb for the bolts).
- Adjust Suspension Settings
- Set the desired rebound and compression settings using the shock’s adjustment dials. This is important to fine-tune the shock’s performance for your riding style.
Adjustment and Customization of the DHX Factory Rear Shock
The DHX Factory rear shock comes with a range of features that allow you to fine-tune its performance for different types of terrain. Proper adjustments can help you achieve maximum comfort and control.
Rebound Adjustment
The rebound adjustment controls how quickly the shock returns to its original position after compression. This is crucial for maintaining control on varied terrain.
- Fast Rebound: For smoother trails or if you prefer quicker shock return.
- Slow Rebound: For rougher terrain where you need the shock to compress and return more slowly to maintain better stability.
Compression Damping Adjustment
The compression damping adjustment controls how much resistance the shock offers when it is compressed. Adjusting the compression allows you to make the bike more or less responsive based on your preference and the type of trail you’re riding.
- Open Compression: Best for smoother terrain, allowing the shock to move more freely.
- Firm Compression: Suitable for rougher, more aggressive trails, preventing excessive shock movement.
Air Pressure Adjustment
Adjusting the air pressure based on your weight and riding style is critical for achieving the correct sag and overall suspension performance. Typically, riders aim for about 25-30% of shock travel for sag. Use a shock pump to adjust the air pressure until you achieve the desired sag.
Bottom-Out Control
The DHX Factory shock is equipped with bottom-out control to prevent harsh impacts at the end of the shock’s travel. Adjusting this can improve your bike’s handling, especially on technical descents or jumps. Set the control according to the severity of the impacts you expect during your rides.
Maintenance of the DHX Factory Rear Shock
Proper maintenance is crucial for the longevity and performance of your Fox DHX Factory rear shock. Regular maintenance intervals will ensure the shock continues to perform at its best.
Cleaning and Inspection
- Cleaning: After each ride, wipe down the shock with a soft cloth to remove dirt and debris. Pay attention to the shock’s seals to ensure they remain free of contaminants.
- Inspection: Check the shock for any visible signs of wear or damage, such as oil leaks, frame contact points, or bent mounting hardware.
Air Sleeve Maintenance
Over time, the air sleeve on the shock may accumulate dirt and debris, affecting the shock’s performance. Regularly service the air sleeve by removing it, cleaning it, and applying fresh lubricant. Fox recommends performing this maintenance every 50-100 hours of riding.
Seal Replacement
Seals are crucial for preventing dirt and moisture from entering the shock and degrading its performance. If you notice oil leakage or decreased performance, it may be time to replace the seals. Fox offers seal kits specifically designed for the DHX Factory rear shock.
Shock Oil
Changing the shock oil is also an important aspect of maintenance. This should be done every 100-150 hours of riding or as recommended by Fox. Regular oil changes help maintain consistent performance and prevent internal damage.
Troubleshooting Common Issues with the DHX Factory Rear Shock
While the DHX Factory rear shock is a high-quality piece of equipment, like any mechanical component, it may experience issues over time. Here are some common problems and how to troubleshoot them.
Lack of Rebound Control
If the shock feels too fast or slow when rebounding, check the rebound dial. If the dial is adjusted properly but the problem persists, inspect the shock for air leakage or internal damage. In some cases, the shock may need servicing or a new oil change.
Poor Performance on Hard Hits
If you notice that the shock isn’t handling hard impacts effectively, check the air pressure and adjust it according to your weight and riding style. If the shock still feels bottomed out or underperforming, inspect the compression adjustments and consider servicing the internal components.
Unusual Noises
If the shock is making noise during compression or rebound, it may indicate that there’s dirt or debris in the shock’s seals. Clean and lubricate the seals and ensure there’s no grit that could cause damage. Persistent noise may require the replacement of seals or shock servicing.
Comparison with Other Rear Shocks
The Fox DHX Factory rear shock stands out in the market due to its combination of performance, adjustability, and durability. However, there are other options worth considering depending on your needs and budget.
Fox DHX2
The DHX2 is another rear shock from Fox that offers similar performance but comes with an additional adjustability feature. The DHX2 is designed for riders who want more precise tuning for different conditions. If you’re looking for a shock that offers more customization, the DHX2 may be worth considering.
RockShox Super Deluxe
The RockShox Super Deluxe rear shock offers excellent performance with a slightly different feel. While it’s known for its plushness and smoothness, it might not be as tunable as the DHX Factory. If you prefer a shock with a more “set-it-and-forget-it” feel, the Super Deluxe might be the better choice.
Compatibility with Other Drivetrain Components
The DHX Factory rear shock is designed to be compatible with a variety of mountain bike frames and drivetrain systems. However, it’s important to ensure that your bike’s frame and rear suspension linkage are designed to work with a shock of this type.
- Frame Compatibility: The shock is designed to fit standard 8.5×2.5 or 9.5×3 inch shock sizes. Before purchasing, ensure your frame can accommodate these dimensions.
- Drivetrain Compatibility: While the rear shock does not directly affect drivetrain compatibility, ensuring your bike’s rear triangle works well with the shock is key for performance. Proper frame geometry will ensure optimal suspension performance when paired with a compatible drivetrain.
Conclusion
The Fox DHX Factory rear shock is a top-tier option for riders looking to fine-tune their bike’s suspension for maximum performance. With adjustable settings, high-quality materials, and reliable performance, it is a popular choice among riders across various disciplines. By following proper installation, maintenance, and adjustment procedures, you can ensure that your DHX Factory rear shock continues to perform optimally for years to come.