Full Review: Boxxer Select RC Suspension Fork Performance and Durability

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The RockShox Boxxer Select RC [paid link] suspension fork is designed for serious riders who need exceptional performance on rough trails and aggressive downhill courses. Known for its robust construction and reliable performance, the Boxxer Select RC [paid link] is a top choice for riders seeking a high-performance fork that excels in handling rough terrain while maintaining durability over long rides. This guide will walk you through the installation, adjustment, maintenance, troubleshooting, and optimization of the Boxxer Select RC, helping you get the most out of this exceptional component.

Installation of the Boxxer Select RC Suspension Fork

Pre-Installation Preparation

Before beginning the installation of the Boxxer Select RC suspension fork, ensure you have the right tools and a clean workspace. Proper installation is crucial to the fork’s performance and longevity.

Tools Required:

  • 5mm, 6mm, and 8mm Allen wrenches [paid link]
  • Torque wrench [paid link]
  • 15mm through-axle tool
  • Suspension oil
  • Grease
  • Crown race installation tool (if not pre-installed)

Step-by-Step Installation

  1. Remove the Old Fork: If replacing an existing fork, remove it by loosening the headset cap, and then remove the fork’s axle and stem.
  2. Install the Crown Race: The Boxxer Select RC may not come with a crown race installed. If not, use a crown race installation tool to install the race onto the fork’s steerer tube.
  3. Prepare the Headset and Bearings: Clean the headset and apply a thin layer of grease to prevent corrosion and ensure smooth rotation.
  4. Install the Fork: Slide the steerer tube of the Boxxer Select RC into the head tube of the bike, aligning it with the headset bearings.
  5. Secure the Fork: Tighten the headset compression bolt and adjust it until there is no play in the headset while still allowing smooth steering movement.
  6. Install the Front Wheel: Insert the 15mm through-axle and tighten it to the manufacturer’s recommended torque settings.
  7. Reinstall the Stem and Handlebars: Slide the stem onto the steerer tube and secure it with the appropriate Allen bolts, tightening them evenly. Make sure the handlebars are aligned correctly.
  8. Final Inspection: Double-check all bolts for tightness and ensure that the fork is properly aligned and functioning.

Adjusting the Boxxer Select RC Fork

The Boxxer Select RC fork offers several adjustments to tailor the suspension feel to your specific riding style and terrain. The key adjustments include rebound, compression, and air pressure.

Rebound Adjustment

Rebound adjustment controls the speed at which the fork returns to its extended position after compression. This is crucial for maintaining control when riding over uneven surfaces.

  • Turn the rebound dial, located on the lower leg of the fork, clockwise to slow the rebound and counterclockwise to speed it up.
  • Set the rebound to your preference based on the riding conditions. For fast, rough terrain, a slower rebound may help maintain control.

Compression Adjustment

The compression knob adjusts the initial fork compression during a bump. This setting helps control how the fork reacts to impacts and prevents bottoming out on large hits.

  • Turn the compression knob, located on the top of the right fork leg, clockwise to increase compression damping (firmer feel), and counterclockwise for a softer feel.
  • A higher compression setting is ideal for downhill and aggressive riding, while a softer setting is better for smoother terrain.

Air Pressure

The Boxxer Select RC uses an air spring, which you can adjust to match your weight and riding style.

  • Remove the air cap from the left fork leg.
  • Use an air pump to adjust the pressure. The recommended air pressure is usually printed on the side of the fork, but a general guideline is 70-90 psi for riders in the 150-180 lb range.
  • Adjust the air pressure based on your preferred ride feel, remembering that higher pressures provide a firmer ride, while lower pressures offer more plushness.

Maintenance of the Boxxer Select RC Fork

Regular maintenance is essential to keep the Boxxer Select RC fork performing at its best. Follow these steps to keep your fork in top condition:

Cleaning and Lubing

  • Clean the Fork Stanchions: After each ride, wipe down the stanchions with a clean cloth to remove dirt and grime.
  • Lubricate the Seals: Apply a light coating of suspension-specific oil to the fork seals to ensure smooth operation and prevent premature wear.

Air Spring Maintenance

  • Periodically check the air pressure in the left leg and adjust it according to your weight and riding style.
  • Every 50 hours of riding, perform a simple air spring service, which involves removing the air cap, checking for leaks, and cleaning any debris.

Oil Change

To maintain consistent damping performance, you should replace the oil in the Boxxer Select RC’s damper and air spring.

  • The recommended interval for oil changes is 200 hours of riding or annually, whichever comes first.
  • To perform an oil change, remove the fork’s lowers and drain the old oil. Refill with the specified weight of suspension oil, ensuring you use the correct type for each leg (damper and air spring).

Seal Replacement

The fork seals may wear out over time and need replacement to prevent leakage and maintain smooth performance.

  • Inspect the seals every 100 hours of riding or whenever you notice any oil leakage or stiffness in the fork movement.
  • Replacing the seals involves disassembling the fork, removing the old seals, and installing new ones carefully to avoid damaging the fork’s internals.

Troubleshooting Common Issues with the Boxxer Select RC

Despite the Boxxer Select RC’s robust design, riders may occasionally encounter issues. Here are some common problems and their solutions:

Issue: Fork Bottoming Out

  • Cause: Too little air pressure or too low compression settings.
  • Solution: Increase the air pressure and/or adjust the compression to a higher setting to prevent the fork from bottoming out on large hits.

Issue: Lack of Rebound Control

  • Cause: Rebound setting too fast or low oil levels.
  • Solution: Adjust the rebound dial to slow the fork’s rebound speed. If the issue persists, check oil levels and top off if needed.

Issue: Noisy Fork

  • Cause: Lack of lubrication or dirt buildup.
  • Solution: Clean and lubricate the stanchions and seals. If the noise continues, inspect the bushings for wear and replace if necessary.

Customization and Optimization of the Boxxer Select RC Fork

To optimize the Boxxer Select RC for your specific needs, consider the following adjustments and upgrades:

Spring Rate Tuning

While the Boxxer Select RC comes with an air spring, riders looking for a more specific spring rate can opt for aftermarket air shafts or coil spring kits (if compatible). These options provide more adjustability and control for aggressive riders or those on particularly rough trails.

Upgrade to Charger Damper

The Boxxer Select RC features a basic compression damper, but for those seeking more advanced damping control, the Charger damper upgrade is an option. This upgrade provides enhanced low-speed compression adjustments and better overall control on rough terrain.

Comparison with Similar Models

When compared to other high-performance downhill forks, such as the Fox 40 and Manitou Dorado, the Boxxer Select RC stands out for its straightforward adjustability, solid construction, and price point.

  • Fox 40: Known for its premium features and higher price, the Fox 40 offers a slightly smoother ride but lacks the ease of customization that the Boxxer Select RC offers at a more affordable price.
  • Manitou Dorado: The Dorado offers coil springs and a more plush ride, but the Boxxer Select RC’s air spring provides greater adjustability for a broader range of riders and conditions.

Compatibility with Other Drivetrain Components

The Boxxer Select RC suspension fork is compatible with most modern downhill bikes and is designed to work with standard 20mm or 15mm through-axles. Ensure that your frame is designed for this type of axle and that the steerer tube length is compatible with your head tube dimensions. Additionally, make sure your bike’s brake mounts are compatible with the fork’s design to ensure safe and effective braking performance.