The RockShox Monarch Plus RC3 rear shock is a renowned component in the mountain biking world. It is trusted by riders due to its exceptional performance, durability, and adjustability. This guide covers the installation, maintenance, troubleshooting, customization, and compatibility considerations for the Monarch Plus RC3, providing cyclists with a comprehensive understanding of this rear shock and how to get the most out of it.

Tools Required

• Shock pump
• Allen wrenches [paid link] (specific sizes depend on bike)
• Torque wrench [paid link]
• 10mm and 15mm open-end wrenches
• Flathead screwdriver
• Rags for cleaning
• Suspension oil (recommended by manufacturer)
• Sealant and grease (optional)

Installation of the Monarch Plus RC3 Rear Shock

Installing the RockShox Monarch Plus RC3 rear shock requires careful attention to detail to ensure proper setup and performance. Here is a step-by-step guide to installing this rear shock:

1. Prepare the Bike: Place your bike on a stand to elevate the rear triangle. This will give you clear access to the shock mounting points. Ensure that the area is clean and free of debris.
2. Remove the Old Shock: If you are replacing an existing rear shock, use the appropriate Allen wrenches [paid link] to remove it from the bike frame. Pay attention to the orientation of the shock before removing it for reinstallation later.
3. Install the Monarch Plus RC3: Begin by aligning the shock eyelets with the frame’s mounting points. Attach the shock to the frame and tighten the bolts. Ensure that the shock is seated securely and that the mounting hardware is torqued to the manufacturer’s recommended specifications.
4. Install the Air Pressure: The Monarch Plus RC3 has an air-spring system that requires the use of a shock pump. Set the air pressure according to your rider weight and riding style. Start with a lower pressure and increase it incrementally.
5. Adjust the Compression Settings: The Monarch Plus RC3 features a three-position compression adjustment system. Make initial adjustments to suit your riding preferences. You can fine-tune the compression by turning the dial to one of the three settings: Open, Pedal, and Lock.
6. Final Inspection: Double-check all bolts and settings before riding. Ensure there is no play in the shock and that it moves freely. Check the air pressure again after installation.

Adjustment and Maintenance of the Monarch Plus RC3 Rear Shock

The Monarch Plus RC3 offers a high level of adjustability, allowing riders to fine-tune the shock’s performance for different conditions. Regular maintenance is crucial for ensuring the longevity and proper functioning of the shock. Here’s how to adjust and maintain the Monarch Plus RC3:

Adjusting the Monarch Plus RC3

• Air Pressure: Adjust the air pressure in the shock based on your rider weight, riding conditions, and suspension preferences. As a general rule, increase the air pressure for aggressive riding or heavier loads, and decrease it for more comfort.
• Compression Settings: Use the three-position compression adjuster to dial in the shock’s performance. The “Open” setting provides the most plush feel, great for technical descents. The “Pedal” setting is firmer and works well for climbing. The “Lock” setting is ideal for smooth, flat terrain when minimal suspension movement is needed.
• Rebound Adjustment: Use the rebound adjustment knob to control how quickly the shock returns to its neutral position after compressing. Adjust this to suit your preferences, typically setting it faster for more aggressive riding or slower for more technical riding.

Maintaining the Monarch Plus RC3

• Cleaning: After each ride, clean the shock with a rag to remove dirt and debris. Avoid using harsh chemicals or high-pressure water directly on the shock.
• Lubricating: Occasionally, check the shock’s lubrication. Apply suspension oil or grease to the shock shaft if it becomes dry. This helps maintain smooth movement and reduces friction.
• Checking for Leaks: Inspect the shock regularly for signs of oil leakage. If you notice any oil on the shock body, it may indicate a seal failure, and it should be serviced immediately.
• Air Pressure: Over time, the shock’s air pressure can naturally decrease. It’s a good practice to check and adjust the air pressure before each ride.

Troubleshooting Common Set-Up Issues

While the Monarch Plus RC3 is a robust and reliable shock, riders may occasionally encounter issues during setup. Below are some common issues and solutions:

Shock Does Not Hold Air Pressure

• Cause: A damaged seal or valve could be allowing air to escape.
• Solution: Inspect the shock for any signs of oil leakage. If oil is leaking around the air valve or shock body, the seals may need to be replaced. You can also take the shock to a professional for a thorough inspection.

Lack of Rebound Control

• Cause: The rebound adjustment knob is not properly set.
• Solution: Ensure the rebound is set to the correct position based on your riding style. If the knob feels loose or doesn’t respond, the internal components may need servicing.

Poor Compression Performance

• Cause: The compression adjuster may not be functioning properly due to dirt or wear.
• Solution: Clean the compression dial and ensure it is free from dirt and debris. If performance issues persist, the damper may need to be serviced or rebuilt by a professional.

Customization and Optimization for Better Performance

To achieve optimal performance, riders can make a few adjustments or upgrades to the Monarch Plus RC3:

• Spring Rate: Adjust the air pressure to better match your riding style. Lighter riders may benefit from lower pressures for a more plush ride, while heavier riders may need higher pressures for better bottom-out resistance.
• Shock Mounting: Check that the shock is mounted in the most efficient position on the frame for your riding style. Some riders experiment with shock placement to find the sweet spot for travel and performance.
• Upgrade Seals: If you frequently ride in harsh conditions, consider upgrading the seals to more durable, weather-resistant options. This can extend the lifespan of your shock and maintain performance under extreme conditions.
• Rebuild Kits: For advanced users, a rebuild kit is available for the Monarch Plus RC3, allowing you to perform more in-depth servicing. This is useful if you frequently ride in aggressive terrain or need to maintain the shock over time.

Comparison with Similar Models

When considering rear shocks, the Monarch Plus RC3 holds its own against several competing models in the market. Here’s a quick comparison with two similar models:

Monarch Plus RC3 vs. Fox Float X2

• The Fox Float X2 offers superior customization with more compression and rebound adjustments. However, the Monarch Plus RC3 is often favored for its simpler, more intuitive controls and lighter weight. Riders seeking a user-friendly, reliable shock may prefer the Monarch Plus RC3.

Monarch Plus RC3 vs. RockShox Super Deluxe

• The RockShox Super Deluxe is another high-end shock from the same brand, offering more advanced features such as coil-spring compatibility. However, the Monarch Plus RC3 provides better air-spring performance and is typically more affordable. It is a great choice for those looking for a reliable air shock without the higher cost of the Super Deluxe.

Understanding Compatibility with Other Drivetrain Components

The Monarch Plus RC3 rear shock is compatible with most modern mountain bike frames, particularly those designed for air shocks. However, it is essential to check compatibility before purchasing:

• Frame Mounting: Ensure your frame has the correct shock mounting hardware, as the Monarch Plus RC3 uses standard eyelet mounts.
• Suspension Geometry: The shock’s travel must match your bike’s geometry for optimal performance. Confirm that the shock’s travel is compatible with your frame’s suspension design.
• Damper Compatibility: If you’re upgrading from a different shock, check the damping system’s compatibility with your frame to ensure smooth performance.