Servicing Your Deluxe Ultimate RCT Rear Shock: Tools and Tips

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The RockShox Deluxe Ultimate RCT rear shock is known for its performance, tunability, and reliability. Whether you’re a seasoned rider or a beginner, understanding how to properly service, maintain, and adjust this shock can significantly improve your riding experience. This guide provides in-depth instructions for servicing the Deluxe Ultimate RCT, troubleshooting common issues, and optimizing it for better performance.

Tools Required

To service your Deluxe Ultimate RCT rear shock, you will need the following tools:

  • Shock pump: For adjusting air pressure.
  • Torque wrench [paid link]: Ensures proper tightening of bolts.
  • Allen wrenches [paid link]: For removing shock hardware and adjusting air pressure settings.
  • 3mm and 5mm Allen keys [paid link]: For specific screws and adjustments.
  • Snap ring pliers: For removing and installing snap rings.
  • Oil and grease: For lubricating components during reassembly.
  • Microfiber cloth: To clean the shock and components.
  • Seal kit: For replacing worn seals during maintenance.
  • Shock fluid: For maintaining proper damping characteristics.

Understanding the Deluxe Ultimate RCT Rear Shock

Before diving into servicing, it’s important to understand the key features of the RockShox Deluxe Ultimate RCT rear shock. This shock is designed for high-performance mountain biking, offering advanced damping adjustments with the RCT3 damper system. It allows for fine-tuned control of compression, rebound, and low-speed damping, providing superior traction and comfort on rough terrain.

Key features include:

  • RCT3 Damper: Offers three-position compression adjustments, allowing riders to quickly switch between open, pedal, and lock modes.
  • DebonAir Spring: Provides a supple, plush feel at the start of the stroke and enhanced mid-stroke support.
  • Charger 2.1 Technology: Offers smoother transitions between settings and more consistent damping.

Installation of the Deluxe Ultimate RCT Rear Shock

The installation of the RockShox Deluxe Ultimate RCT rear shock should be performed carefully to ensure optimal performance. The process involves mounting the shock onto the bike frame and adjusting it to your weight and riding style.

Steps for Installation:

  1. Remove the Old Shock: If you are replacing an existing shock, first remove it by loosening the bolts that secure the shock to the frame and the linkage.
  2. Install the New Shock: Position the Deluxe Ultimate RCT shock in the shock mount. Insert the mounting bolts through the shock eyelets and tighten the bolts to the specified torque setting.
  3. Check Alignment: Ensure the shock is properly aligned and that the frame and shock are not under undue stress. Misalignment could affect performance and cause premature wear.
  4. Set the Air Pressure: Using a shock pump, set the recommended air pressure for your weight and riding style. Start with the default setting and adjust based on feedback during test rides.
  5. Test the Shock: After installation, cycle the shock through its range of motion to ensure proper installation and to check for any issues with movement or alignment.

Adjusting and Tuning the Deluxe Ultimate RCT Rear Shock

Once the shock is installed, it is essential to fine-tune the settings for optimal performance. The Deluxe Ultimate RCT rear shock features several adjustable settings, including air pressure, rebound, and compression.

Air Pressure Adjustment:

  • Set the correct air pressure: The correct air pressure is crucial for the performance of the rear shock. Generally, the pressure should be set according to your body weight. You can refer to the manufacturer’s recommended pressure chart for guidance.
  • Adjust based on riding style: If you prefer a firmer ride, increase the air pressure slightly. For a softer feel, reduce the air pressure.

Compression and Rebound Settings:

  • Compression: The RCT3 damper allows for three-position compression adjustment: Open, Pedal, and Lock. The Open mode is best for rough terrain, providing maximum suspension travel. The Pedal mode stiffens the shock for climbing, and the Lock mode fully firms up the shock for maximum efficiency on smooth trails.
  • Rebound: Rebound adjusts how quickly the shock returns after compressing. Too fast or too slow can lead to poor handling. Adjust the rebound knob to find a setting that feels controlled but not overly slow.

Fine-Tuning the Performance:

  • Adjust the high and low-speed compression to suit your riding style. High-speed compression affects how the shock handles impacts from big hits, while low-speed compression influences small bumps and pedal strokes.
  • Use small increments when adjusting the shock settings. Make small changes and test ride to assess the impact before further adjustments.

Maintenance of the Deluxe Ultimate RCT Rear Shock

Regular maintenance is key to keeping your Deluxe Ultimate RCT rear shock performing at its best. Here’s a breakdown of the maintenance steps:

Routine Cleaning:

  • Clean the shock regularly: After every ride, use a microfiber cloth to clean the shock and its components. Pay attention to the shock seals and eyelets, as dirt and grime can affect performance.
  • Inspect for wear: Check the shock for any signs of damage, such as leaking air or oil. If you notice any issues, it may be time for a deeper inspection or seal replacement.

Seal and Oil Change:

  • Replace seals: Over time, the seals on the shock will wear out. If you notice a decrease in performance or oil leakage, it’s time to replace the seals.
  • Change the oil: Depending on riding conditions and frequency, changing the oil inside the shock is important to maintain smooth damping. This process requires specialized knowledge, so if you’re unsure, it’s best to consult a professional mechanic or service center.

Checking for Play or Damage:

  • Inspect the mounting hardware: Ensure that the shock bolts are properly tightened and that there is no excessive play in the shock mounts.
  • Check for air loss: Use a shock pump to check the air pressure before and after rides. If the pressure drops significantly, this could indicate an issue with the air seals.

Troubleshooting Common Issues

1. Loss of Air Pressure:

  • Cause: Leaking seals or an improperly closed air valve.
  • Solution: Check the valve for any signs of damage or dirt. If necessary, replace the air seals or take the shock for a professional inspection.

2. Poor Damping Performance:

  • Cause: Contaminated oil or worn seals.
  • Solution: Clean the shock and replace the oil if necessary. If damping remains poor, check the seals and replace them if worn.

3. Noisy Shock:

  • Cause: Dirt or grime between the shock and its mounts.
  • Solution: Clean the shock thoroughly and lubricate the shock eyelets to reduce friction and noise.

Customization and Optimization

The Deluxe Ultimate RCT rear shock can be customized to suit a variety of riding styles and conditions. If you find the default settings aren’t ideal, consider the following:

  • Spring Rate: For heavier riders or those who prefer a firmer ride, you may need to adjust the spring rate or use a different air chamber.
  • Tuning Compression Settings: Experiment with different compression settings based on your preferred riding style. A softer setting is ideal for downhill, while a firmer setting is better for cross-country riding.

Comparison with Other Models

When comparing the RockShox Deluxe Ultimate RCT with other models, it’s important to consider the type of riding you do. The Deluxe Ultimate RCT is ideal for riders who need a high-performance, adjustable shock for varied terrain. While other shocks like the Fox Float X2 or Marzocchi Bomber CR may offer similar performance, the Deluxe Ultimate RCT’s RCT3 damper system offers a distinct advantage in ease of use with three positions, making it highly customizable on the fly.

In comparison to simpler models, the Deluxe Ultimate RCT excels in offering more granular control over both high and low-speed compression, as well as rebound settings, making it ideal for riders who need flexibility and precision.

Compatibility with Other Drivetrain Components

The Deluxe Ultimate RCT rear shock is designed to work with a wide range of mountain bike frames, especially those using modern suspension designs. Its versatile adjustability makes it compatible with various drivetrain setups, but it’s important to ensure that the shock fits your bike’s frame. Always double-check the dimensions and mounting options before purchasing. Compatibility with other components like the RockShox Pike fork can provide a seamless suspension system, maximizing overall bike performance.