The Mara Inline Trunnion [paid link] rear shock from Manitou is a highly regarded component in the mountain biking world. Known for its smooth performance and durability, this shock is designed for riders who demand precision handling and comfort on rough trails. This guide will cover the installation, adjustment, maintenance, troubleshooting, customization, and comparison of the Mara Inline Trunnion [paid link] to help you decide if it’s the best rear shock for your mountain bike.

Installation of the Mara Inline Trunnion

The installation process for the Mara Inline [paid link] Trunnion is straightforward, but it requires attention to detail to ensure optimal performance. Here’s how to install it correctly:

Tools Required:

• 8mm Allen wrench [paid link]
• Torque wrench [paid link]
• 10mm socket wrench
• Manitou shock pump
• Soft cloth or shock-specific mounting hardware

Installation Steps:

1. Remove the old shock: If you are replacing an existing shock, carefully remove it by unscrewing the mounting bolts using your 8mm Allen wrench [paid link]. Ensure that the bike is secure before starting this process.
2. Clean the mounting areas: Use a soft cloth to clean both the shock mounting points on the frame and the shock itself. This ensures no debris interferes with the installation.
3. Attach the shock: Position the Mara Inline [paid link] Trunnion in the frame’s rear shock mount. Use the supplied hardware to secure the shock. Tighten the bolts with your 8mm Allen wrench, ensuring they are securely fastened.
4. Check the torque: Use a torque wrench [paid link] to ensure the shock mounting bolts are tightened to the manufacturer’s recommended torque specification (usually between 8-10Nm).
5. Set the air pressure: Once the shock is mounted, use a Manitou shock pump to set the appropriate air pressure based on your weight and riding style. This pressure will affect the shock’s compression and rebound.

Adjustment and Tuning of the Mara Inline Trunnion

One of the key features of the Mara Inline Trunnion is its adjustability. Fine-tuning this shock to your specific needs will enhance your riding experience. The Mara Inline Trunnion offers a variety of adjustments for compression, rebound, and air spring pressure.

Compression and Rebound Adjustments:

• Rebound Control: The Mara Inline Trunnion features a rebound knob that allows you to control how quickly the shock returns after compressing. Adjust this based on your riding style:
  • For technical terrain, reduce the rebound speed to maintain control.
  • For smoother trails, increase the rebound speed for a faster recovery.
• Compression Adjustments: The shock comes with an adjustable compression damper that can be tuned for different riding conditions:
  • For aggressive downhill riding or rough terrain, use the high-speed compression adjustment to stiffen the shock.
  • For smoother trails, decrease the compression to allow more plushness.

Air Spring Pressure:

The Mara Inline Trunnion is equipped with an air spring system that you can fine-tune by adjusting the air pressure. The correct air pressure is vital to achieving the right balance between comfort and performance. To set it:

1. Start with the recommended pressure based on your rider weight.
2. Fine-tune the pressure by adjusting the shock pump incrementally and testing the bike on different terrain.

Maintenance of the Mara Inline Trunnion

Proper maintenance is essential for ensuring the Mara Inline Trunnion continues to perform at its best over time. Regular servicing helps prevent wear and keeps the shock running smoothly.

Regular Cleaning:

• After each ride, especially in muddy or wet conditions, clean the shock and its components. Use a soft cloth to remove dirt and debris from the shock body and bushings.
• Check the seals for any signs of wear or damage.

Lubrication:

• The Mara Inline Trunnion has bushings that require periodic lubrication. Every 10-15 hours of riding, apply a small amount of lubricant to the bushings to ensure smooth movement.

Air Spring Maintenance:

• Periodically check the air spring’s air pressure. If the shock starts feeling too soft or too hard, it may be time to adjust the pressure or check for leaks.
• Every 50 hours of riding, it’s a good idea to remove and inspect the air sleeve for any signs of wear. Lubricate the seals as necessary.

Damper Service:

• The Mara Inline Trunnion’s damper can accumulate oil and dirt over time. To maintain optimal performance, it is recommended to service the damper every 100-150 hours of riding. This service may include changing the oil and cleaning the damper’s internal components.

Troubleshooting Common Set-Up Issues

Sometimes, even the best components can have issues. Below are some common problems that riders experience with the Mara Inline Trunnion and how to troubleshoot them:

Loss of Air Pressure:

• Problem: The shock feels too soft or bottoming out.
• Solution: Check the air pressure and adjust it according to your rider weight. If the problem persists, inspect the seals for any damage or leaks and replace them if necessary.

Excessive Rebound or Compression:

• Problem: The shock feels too fast or too slow on rebound or compression.
• Solution: Re-adjust the rebound and compression settings. Experiment with different settings to find the optimal balance for your riding style.

Noisy Shock:

• Problem: A squeaking or grinding noise coming from the shock.
• Solution: Clean the shock thoroughly and lubricate the bushings. Ensure the mounting bolts are correctly tightened and that there is no debris around the shock.

Customization and Optimization for Better Performance

To get the best performance out of the Mara Inline Trunnion, consider customizing and optimizing it for your specific needs. Here are a few recommendations:

• Fine-Tune for Terrain: Adjust the shock’s air pressure, rebound, and compression settings based on the terrain you’ll be riding. For example, if you frequently ride on rocky trails, increasing the compression damping will provide better control.
• Weight Considerations: Heavier riders may benefit from using a higher air pressure setting to prevent bottoming out. Lighter riders should reduce the pressure for a more plush ride.
• Shock Sizing: Ensure the shock is the correct size for your bike frame. The Mara Inline Trunnion is available in a range of sizes, so it’s essential to match it to your frame’s geometry.

Comparison with Similar Models

When choosing a rear shock for your mountain bike, it’s essential to compare different models to determine which one best fits your needs. The Mara Inline Trunnion competes with several other rear shocks in its class, such as the Fox Float DPX2 and the RockShox Monarch.

• Mara Inline Trunnion vs. Fox Float DPX2: The Fox Float DPX2 offers similar performance but with a more complex damper system. While both shocks offer excellent control, the Mara Inline Trunnion is known for being easier to set up and maintain, making it ideal for riders looking for simplicity without sacrificing performance.
• Mara Inline Trunnion vs. RockShox Monarch: The RockShox Monarch is slightly more affordable but offers fewer adjustment options compared to the Mara Inline Trunnion. The Monarch may be a good option for riders who prioritize a budget-friendly shock, while the Mara Inline Trunnion is the better choice for riders seeking higher customization and durability.

Compatibility with Other Drivetrain Components

The Mara Inline Trunnion is designed to be compatible with most modern mountain bike frames and drivetrain systems. However, it’s important to check compatibility with your specific bike model, especially the shock mount size and the frame’s geometry. Ensure that the shock’s dimensions match your frame and that the air pressure requirements align with the overall suspension system.

The Mara Inline Trunnion is best paired with a balanced suspension system that complements its performance features. Combining it with high-quality front suspension forks, such as the Manitou Mattoc, can provide an optimal ride experience for riders who demand top-tier performance.