The RockShox Deluxe Ultimate RCT rear shock stands as one of the top choices for riders seeking a blend of high performance, precise adjustability, and durability. It is widely appreciated for its ability to handle various terrains while offering a smooth and controlled ride. In this guide, we will dive into the features of the Deluxe Ultimate RCT, discuss its installation and maintenance, troubleshoot common issues, and compare it with other rear shock models on the market.

Features of the RockShox Deluxe Ultimate RCT

The RockShox Deluxe Ultimate RCT rear shock is built for riders who demand ultimate control and comfort. This shock is designed with an advanced set of features that cater to both casual riders and seasoned professionals. Some of the standout features include:

1. RCT3 Adjuster

The RCT3 (Rebound, Compression, and Three-position) adjuster is a key component of the Deluxe Ultimate RCT, allowing riders to fine-tune the suspension performance for different trail conditions. With three distinct settings—Open, Pedal, and Lock—this feature provides versatility for various riding styles.

2. DebonAir Spring

The DebonAir spring ensures consistent performance and comfort by offering a more supple initial stroke. This spring allows for better small-bump sensitivity and an improved overall ride feel, especially on technical terrain.

3. External Rebound and Compression Damping

The Deluxe Ultimate RCT provides separate adjustments for both rebound and compression damping, which allows for greater fine-tuning of your ride. This feature helps riders dial in their shock settings to match their specific needs, whether for downhill, cross-country, or enduro riding.

4. Dual Flow Adjust

This feature optimizes damping for both high and low-speed compression, enhancing the shock’s ability to handle rough terrain while maintaining a smooth feel over smaller bumps.

5. Charger 2.1 Damper

The Charger 2.1 damper found in the Deluxe Ultimate RCT rear shock is designed to provide improved performance with a focus on higher energy efficiency and a more predictable ride.

Installation and Adjustment

Proper installation and adjustment of the Deluxe Ultimate RCT rear shock are crucial for optimal performance. Here’s a step-by-step guide to get your shock mounted and tuned for maximum performance:

Tools Required:

• 5mm Allen wrench [paid link]
• 8mm spanner
• Torque wrench [paid link]
• Shock pump

Installation:

1. Remove the old rear shock from your bike frame, using the appropriate tools to remove the bolts that secure the shock to the frame.
2. Install the Deluxe Ultimate RCT by aligning the shock eyelets with the mounting hardware on your bike. Ensure the shock is properly seated in the mounting bracket.
3. Tighten the mounting bolts to the recommended torque setting, using the torque wrench [paid link] to avoid over-tightening.
4. Install the air sleeve and ensure that the seals are in place, making sure the shock is sealed correctly to prevent air leakage.

Adjustment:

1. Set the air pressure: Begin by setting the air pressure according to your rider weight. The recommended pressure can be found in the shock’s manual or by using an online air pressure calculator.
2. Adjust the compression and rebound settings: Use the rebound and compression adjusters to fine-tune the performance to your liking. Start with the middle settings and adjust from there based on your riding style.
3. Set the RCT3 lever: Adjust the three-position lever (Open, Pedal, and Lock) to suit the type of riding you plan to do. Open is for maximum performance, Pedal is for moderate performance, and Lock is for firm pedaling efficiency.

Troubleshooting Common Set-Up Issues

Even the best shocks can sometimes encounter issues. Here are some common problems riders face with the Deluxe Ultimate RCT rear shock and how to troubleshoot them:

1. Shock Feels Too Soft or Too Firm

• Issue: This could be due to improper air pressure or incorrect damping settings.
• Solution: Double-check the air pressure and adjust it according to the rider’s weight. If the air pressure is correct, tweak the rebound and compression settings to better suit your needs.

2. No Rebound Damping

• Issue: The rebound is not functioning as expected, and the shock feels sluggish or unresponsive.
• Solution: Inspect the rebound adjustment knob and ensure it is set properly. If the issue persists, check for internal issues or consult a professional to service the shock.

3. Compression Damping Issues

• Issue: The shock feels too harsh or not responsive enough on rough terrain.
• Solution: Adjust the compression damping knob to suit the trail conditions. If the adjustment doesn’t resolve the issue, check the shock for possible damage or leakage.

4. Air Leaks

• Issue: If the shock is losing air, it can negatively affect performance.
• Solution: Check for any visible damage to the air sleeve, seals, or fittings. If the air continues to leak, it’s best to bring the shock in for a full inspection.

Customization and Optimization for Better Performance

The Deluxe Ultimate RCT rear shock offers several options for fine-tuning its performance. Whether you’re an aggressive rider or someone who prefers smooth rides on technical trails, you can modify the shock’s settings to fit your needs.

1. Rebound Settings

The rebound adjustment can be altered to slow or speed up the return of the shock after compression. Slower rebound is ideal for smoother terrains, while faster rebound works better on technical trails.

2. Compression Damping

Adjust the compression damping to modify how the shock responds to different impacts. Higher compression damping is useful for more aggressive rides, while softer settings provide better comfort on rougher terrains.

3. Air Pressure

Varying the air pressure can significantly alter the ride feel. Experiment with slight changes to the air pressure to find the sweet spot for both comfort and performance.

Comparing Deluxe Ultimate RCT to the Competition

When selecting a rear shock, it’s important to compare the Deluxe Ultimate RCT to similar models in the market to understand its strengths and weaknesses.

Deluxe Ultimate RCT vs. Fox Float DPX2

• Fox Float DPX2 features a three-position adjustment system similar to the RCT3 but lacks the fine-tuned high and low-speed compression adjustment. The Fox shock is known for its reliability and solid performance, but the RockShox offers a bit more versatility with its adjustable damper.
• Performance: While both shocks are highly adjustable, the Deluxe Ultimate RCT excels in providing a more tailored ride with its precise tuning abilities.

Deluxe Ultimate RCT vs. Cane Creek DB Kitsuma

• The Cane Creek DB Kitsuma offers similar adjustability, including a 4-way compression and rebound adjuster, but it is generally more complex to tune compared to the RCT. The RockShox Deluxe Ultimate RCT is known for being easier to adjust on the fly and offers a more consistent performance across different terrains.

Deluxe Ultimate RCT vs. MRP Hazzard

• MRP Hazzard is a high-performance rear shock, known for its consistent performance in enduro racing. It offers more specialized tuning for aggressive riding, but the Deluxe Ultimate RCT is the better choice for riders seeking versatility across various trail conditions, thanks to its additional fine-tuning capabilities.

Understanding Compatibility with Other Drivetrain Components

The Deluxe Ultimate RCT rear shock is compatible with a wide range of bike frames and drivetrain setups. However, it’s important to check the following:

• Mounting Hardware: Ensure that the shock’s eyelets fit the frame and that the shock stroke length matches the frame specifications.
• Suspension Linkage: Some suspension systems may require specific tuning or linkage configurations to work optimally with the shock.
• Brake Mount Compatibility: In some cases, rear shocks can affect brake performance, so ensure that your shock doesn’t interfere with your braking system.

The Deluxe Ultimate RCT rear shock is designed to be highly versatile, but ensuring compatibility with your specific bike setup is essential for peak performance.