Is the DHX Trail the Best Rear Shock for Mountain Bikes?

Posted on
in Uncategorized

The DHX Trail from Fox is a rear shock designed specifically for mountain bikes, offering advanced performance, durability, and customizability. In this guide, we’ll break down everything you need to know about the DHX Trail: installation, maintenance, adjustments, troubleshooting, and optimization. We’ll also explore how it compares to similar models and evaluate its compatibility with other components to help you decide if it’s the best rear shock for your mountain bike.

Understanding the DHX Trail Rear Shock

The DHX Trail is designed to handle the rugged demands of mountain biking, offering high-end suspension performance with adjustable features that cater to a variety of riding styles. Whether you’re tackling aggressive descents or riding through technical terrain, this shock provides excellent control, comfort, and responsiveness.

It features a coil spring system, which is favored for its smooth, progressive compression and increased durability over air shocks. The DHX Trail shock is suitable for riders who prioritize consistency in challenging conditions and who demand a suspension system that can handle a range of terrain.

Tools Required for Installation

Before installing the DHX Trail rear shock, you’ll need the following tools:

  • 8mm hex wrench
  • Torque wrench [paid link] (with 5-15 Nm setting)
  • Suspension grease
  • Shock pump (if needed for air-based settings)
  • Allen keys [paid link] (for other adjustments)
  • Flathead screwdriver (for adjusting preload)
  • Safety gloves (optional)

Installation of the DHX Trail Rear Shock

Installing the DHX Trail rear shock is a straightforward process, but it requires attention to detail to ensure that everything is properly set up for optimal performance.

  1. Prepare the Bike Frame: Start by ensuring that the rear triangle of your bike is clean and free of debris. This will prevent any particles from damaging the shock during installation.
  2. Remove the Existing Shock: If replacing an old shock, use an 8mm hex wrench to remove the mounting bolts securing the old shock to the frame. Carefully slide the shock out.
  3. Grease the Shock Mounts: Apply a small amount of suspension grease to the mounting points on the shock. This ensures a smooth installation and prevents creaking.
  4. Install the DHX Trail Shock: Align the shock’s mounting eyes with the frame’s mounting holes. Slide the shock into place and secure it with the appropriate bolts. Tighten the bolts to the manufacturer’s recommended torque specification (usually between 5-15 Nm).
  5. Adjust Preload and Compression: Adjust the preload using the flathead screwdriver and set the compression damping using the adjustable knobs on the shock. Refer to the manufacturer’s manual for recommended initial settings based on your weight and riding style.
  6. Check for Proper Functioning: Cycle through the suspension to ensure it moves smoothly and doesn’t have any unusual noises or resistance. If everything feels good, you’re ready to go!

Adjusting the DHX Trail for Optimal Performance

The DHX Trail comes with several adjustable features that allow you to fine-tune the shock to your specific needs. Here are the primary adjustments:

Preload Adjustment

Preload determines the initial sag of the suspension, which affects how much the shock compresses when you sit on the bike. Adjusting the preload is essential for maintaining proper suspension performance. Use the flathead screwdriver to adjust the preload knob at the top of the shock.

  • Heavy riders will likely need more preload, which increases the sag and stiffens the shock.
  • Lighter riders may want less preload, which allows for more travel and a softer ride.

Compression Damping

The DHX Trail features adjustable compression damping, allowing you to control how quickly the shock compresses under force. The compression knob is typically located on the bottom of the shock.

  • Firm compression settings are ideal for aggressive riders or smoother terrain.
  • Softer compression settings are recommended for technical descents or rocky trails, where more absorption is needed.

Rebound Damping

Rebound controls how quickly the shock returns to its original position after being compressed. Adjust the rebound damping to suit the terrain you’re riding.

  • Slower rebound settings are better for fast descents and big impacts, as they help to maintain control.
  • Faster rebound settings are preferable for smoother terrain or when more responsiveness is needed.

Maintaining the DHX Trail Rear Shock

Proper maintenance is crucial for keeping the DHX Trail shock performing at its best over time. Follow these steps to ensure longevity and peak performance:

  1. Regular Cleaning: After each ride, wipe down the shock to remove dirt, grime, and debris. This prevents buildup that could affect the shock’s performance.
  2. Grease the Bushings: Periodically grease the bushings and pivots where the shock mounts to the frame. This reduces friction and wear, which can cause the shock to wear out prematurely.
  3. Check for Leaks: Inspect the shock for oil or air leaks, especially around the seals. If you notice a leak, the shock may need to be serviced or repaired.
  4. Shock Rebuilds: Over time, the shock may need a complete rebuild. Fox recommends servicing the DHX Trail shock every 100-150 hours of use or annually, whichever comes first. This includes replacing seals, checking internal parts for wear, and refilling the shock’s oil.

Troubleshooting Common Set-Up Issues

Despite its high performance, riders may encounter a few common issues when setting up the DHX Trail. Here’s how to troubleshoot them:

  1. Excessive Sag: If the bike’s suspension feels too soft and sinks too much when you sit on it, increase the preload. This will stiffen the shock and prevent bottoming out.
  2. Harsh Ride: If the ride feels too harsh or uncomfortable, the compression settings might be too firm. Reduce the compression damping to allow the shock to absorb more impacts.
  3. Unresponsive Suspension: If the shock feels unresponsive or doesn’t return properly after compression, check the rebound settings. Slow down the rebound if necessary to allow for a smoother return.
  4. Noise from Shock: If you hear a squeaking or creaking noise from the shock, make sure the bushings are properly lubricated and the mounting bolts are tightened correctly.

Customization and Optimization for Better Performance

The DHX Trail can be further customized for specific riding conditions by experimenting with the compression and rebound adjustments. Riders who focus on aggressive downhill riding might want a firmer compression setting and slower rebound to control high-speed impacts. Conversely, those riding cross-country or trail bikes might prefer a lighter, more responsive setup.

Another way to optimize the DHX Trail for your riding style is by choosing the right coil spring. Fox offers different spring rates, allowing you to select the best option based on your weight and preferences.

Comparing the DHX Trail with Other Rear Shocks

When considering rear shocks for mountain bikes, the DHX Trail stands out due to its coil spring system and advanced adjustability. However, it’s important to compare it with other rear shock models to determine which is best for you.

  • Fox Float X2: This is an air shock designed for aggressive riders who want a lighter setup and more adjustability. It’s great for high-performance riders but might lack the consistency and durability of the DHX Trail in rougher conditions.
  • RockShox Super Deluxe Coil: Another coil shock that rivals the DHX Trail, offering excellent durability and performance on rough trails. The Super Deluxe is known for its smooth feel and high-end performance, though it may be a little pricier than the DHX Trail.

The DHX Trail offers a strong balance between cost, performance, and durability, making it an excellent choice for riders seeking consistent performance in rough conditions without compromising on comfort.

Compatibility with Other Drivetrain Components

The DHX Trail rear shock is designed to work seamlessly with most modern mountain bike frames. However, it’s important to check the compatibility with your specific bike frame, especially when considering the shock’s eye-to-eye length and stroke.

The shock is compatible with a wide range of drivetrains and can be paired with both 1x and 2x setups. However, it’s crucial to check that the shock’s travel and stroke length match your frame’s specifications. This ensures that the shock will provide optimal performance without affecting the geometry of your bike.

In conclusion, the DHX Trail rear shock offers outstanding performance, durability, and customization options, making it a great choice for serious mountain bikers. Whether you’re a beginner or an expert, this shock can be fine-tuned to suit your needs, providing a smooth and controlled ride on even the most challenging trails.