Is the Monarch RT3 the Best Rear Shock for Mountain Bikes?

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The RockShox Monarch RT3 is a high-performance rear shock designed for mountain bikers seeking a blend of comfort, control, and responsiveness. Known for its versatility and tunability, it provides an excellent option for riders looking to optimize their suspension system. In this detailed guide, we will cover everything you need to know about the Monarch RT3, including installation, maintenance, troubleshooting, performance optimization, and how it compares to similar models.

Tools Required

  • 5mm and 8mm Allen wrenches [paid link]
  • Torque wrench [paid link] (set to manufacturer’s specifications)
  • Suspension oil
  • Oil bath setup for the shock
  • Shock pump
  • Grease for mounting hardware
  • Clean rags

Installation of the Monarch RT3

The installation of the Monarch RT3 rear shock is a straightforward process, but it is essential to follow the manufacturer’s instructions carefully to ensure correct setup.

  1. Remove the Old Shock: Begin by removing the existing rear shock from your bike. Use a 5mm or 8mm Allen wrench [paid link] to loosen and remove the bolts securing the shock to the frame. Make sure to keep track of the mounting hardware.
  2. Prepare the Shock: Before installing the new Monarch RT3, make sure it is properly set up for your weight and riding style. Use a shock pump to set the recommended air pressure, which is typically found in the shock’s user manual.
  3. Mount the Shock: Position the shock on the bike’s suspension link and align the mounting hardware. Grease the bushings or bearings before inserting the bolts to ensure smooth movement and prevent creaking. Tighten the bolts with the torque wrench [paid link] according to the specifications provided by RockShox.
  4. Check for Proper Fit: Once the shock is installed, check for proper clearance between the shock and the frame. Ensure that the suspension moves freely without obstruction.
  5. Test the Setup: Before heading out for a ride, make sure to test the shock by compressing it by hand. Ensure it feels responsive and has no unusual resistance.

Adjustment and Maintenance of the Monarch RT3

To get the best performance from your RockShox Monarch RT3, regular maintenance and fine-tuning are crucial.

Rebound Adjustment

The Monarch RT3 features a rebound adjustment dial that allows you to control how quickly the shock returns after compression. Adjust the rebound speed to match your riding style:

  • Slow Rebound: Ideal for rough terrain, where you want the shock to take more time returning to its original position.
  • Fast Rebound: Suitable for smoother trails, where the shock should return more quickly to avoid excessive compression.

Start with the dial in the middle range and adjust from there based on your ride feedback.

Compression Adjustment

The Monarch RT3 offers three distinct settings for compression:

  • Open Mode: Provides the most plush feel and is best suited for rough terrain and technical descents.
  • Pedal Mode: Slightly firms up the shock, offering less movement while pedaling on smoother trails or climbs.
  • Lockout Mode: Completely locks the shock, preventing any movement for efficient pedaling on paved or smooth terrain.

Make sure to adjust these settings to suit the type of trail you are riding.

Regular Maintenance

  • Air Spring Pressure: Periodically check the air spring pressure using a shock pump. Adjust it based on your weight and riding preferences.
  • Suspension Fluid: Over time, the suspension oil inside the shock can degrade. It is recommended to change the oil every 50-100 hours of riding. This helps maintain smooth operation and prevents wear.
  • Seals and Bushings: Regularly inspect the shock seals for any signs of wear or damage. Replace them as needed to maintain a tight seal and prevent dirt and moisture from entering the shock.

Troubleshooting Common Issues

Loss of Air Pressure

If you notice a decrease in air pressure, inspect the shock’s air valve for any damage or wear. If the shock is losing air rapidly, it may need to be serviced or rebuilt.

Unresponsive Rebound or Compression

If the shock isn’t responding to rebound or compression adjustments, the oil may be too low, or there may be internal damage. This issue typically requires professional servicing.

Noisy Shock

Creaking or popping noises can indicate that the bushings or mounting hardware are loose. Tighten the bolts or replace the bushings if they are worn. Ensure the shock is properly greased during installation to avoid these noises.

Customization and Optimization for Better Performance

The Monarch RT3 can be finely tuned to optimize performance for different types of riders and trail conditions. Key adjustments include air pressure, rebound, and compression settings.

  1. Set Air Pressure Correctly: Adjust the air pressure based on your weight and riding style. Higher pressure will give you a firmer ride, while lower pressure will provide more plushness and comfort.
  2. Fine-tune Compression and Rebound: Customize the compression and rebound settings to suit your terrain. If you are riding aggressive trails with rough descents, opt for a softer compression and slower rebound to smooth out the bumps. For cross-country riding, a firmer compression and faster rebound will be more efficient.
  3. Upgrade the Shock Mounting Hardware: Some riders prefer upgrading the shock’s mounting hardware for better performance. Using high-quality bushings or bearings can improve the shock’s responsiveness and lifespan.

Comparison with Similar Models

While the Monarch RT3 is a great all-round rear shock, there are other models worth considering, such as the Fox Float DPS and the Cane Creek DB Air. Here is a comparison of their features:

  • Monarch RT3: Known for its simplicity and three-position compression adjustment. It offers great value for money and is easy to maintain.
  • Fox Float DPS: Offers a more refined damper system with a four-position compression setting. It is slightly more adjustable but may be pricier.
  • Cane Creek DB Air: Known for its high level of tunability with dual-damping adjustments. However, it is more complex and better suited for riders seeking advanced customization.

Compatibility with Other Drivetrain Components

The Monarch RT3 is compatible with most modern mountain bike frames and drivetrain systems. However, always check your frame’s specifications before purchase to ensure proper fit. Additionally, the shock’s performance will be influenced by the geometry of the bike and the suspension link, so make sure the shock aligns with your bike’s design for optimal performance.

Conclusion

The RockShox Monarch RT3 is a solid choice for mountain bikers looking for a reliable and easily adjustable rear shock. With its simple three-position compression adjustments, easy maintenance, and excellent performance across a variety of trail conditions, it offers great value. Whether you’re an experienced rider or a beginner, the Monarch RT3’s versatility and adjustability make it a top contender for anyone seeking a comfortable and responsive ride.