The Mara Pro Trunnion [paid link] Rear Shock from Manitou is designed for serious cyclists looking for advanced performance, reliability, and customization. This rear shock is highly regarded in the mountain biking and enduro communities due to its innovative features and ability to provide a smooth ride across challenging terrains. In this guide, we’ll explore how to install, adjust, and maintain the Mara Pro Trunnion [paid link], troubleshoot common issues, and optimize its performance for the best riding experience.

Installation of the Mara Pro Trunnion Rear Shock

Proper installation of the Mara Pro [paid link] Trunnion rear shock is essential to ensure that it functions optimally. A well-installed rear shock will improve your bike’s handling, efficiency, and overall comfort.

Step-by-Step Installation Process

1. Remove the Old Shock:
   • Begin by removing the existing rear shock from the bike. Depending on your bike’s design, this may involve unscrewing the bolts securing the shock to the frame. Use a torque wrench [paid link] to avoid over-tightening, which can damage the components.
2. Prepare the Mara Pro [paid link] Trunnion:
   • Unbox the Mara Pro Trunnion rear shock carefully. Check the shock for any visible defects or damage. Ensure that the bushings on the ends of the shock are properly seated and are the correct size for your frame.
3. Install the New Shock:
   • Position the Mara Pro Trunnion rear shock in place, aligning it with the mounting points on your bike’s frame. Tighten the bolts to the manufacturer’s specifications using a torque wrench [paid link]. Be cautious not to overtighten, as this can cause damage to the shock or the frame.
4. Check for Proper Alignment:
   • Once the shock is installed, check for proper alignment with the suspension linkage. The shock should sit parallel to the frame, with the trunnion mount securely in place.
5. Ensure Sufficient Clearance:
   • Before testing the bike, make sure the shock has sufficient clearance in its range of motion. You should not have any contact with the frame or other components when the suspension compresses.

Adjusting the Mara Pro Trunnion Rear Shock

Proper adjustments allow you to fine-tune your Mara Pro Trunnion rear shock for different terrains, rider weight, and personal preference. Making the right adjustments ensures that the shock delivers the best possible performance.

Key Adjustment Points

1. Sag Setting:
   • The first adjustment to make is the sag, which is the amount the shock compresses under the rider’s weight. For the Mara Pro Trunnion, the recommended sag is typically around 25-30% of the shock’s total travel. You can adjust the air pressure in the shock to achieve the desired sag by adding or releasing air using a shock pump.
2. Rebound Damping:
   • Adjusting the rebound damping controls the speed at which the shock returns to its original position after compression. Too fast and the shock will be too bouncy; too slow and it may feel sluggish. The Mara Pro Trunnion features a high-quality rebound adjuster that allows you to make fine adjustments depending on your riding style and terrain.
3. Compression Damping:
   • Compression damping controls how the shock reacts when compressed. The Mara Pro Trunnion rear shock features separate high and low-speed compression adjustments. High-speed compression affects fast, sudden impacts like drops or rock hits, while low-speed compression handles slower, more controlled compression from terrain features like roots or bumps.
4. Volume Spacers:
   • The Mara Pro Trunnion comes with adjustable volume spacers, which allow you to fine-tune the shock’s progression. Adding spacers increases the bottom-out resistance, while removing them can give the shock a more linear feel. Experiment with the spacers to find the best progression for your riding style.

Maintenance of the Mara Pro Trunnion Rear Shock

To ensure the longevity and performance of your Mara Pro Trunnion rear shock, regular maintenance is necessary. Routine checks will help prevent issues and keep the shock performing at its best.

Regular Maintenance Tasks

1. Clean the Shock:
   • After each ride, wipe down the shock with a clean, dry cloth to remove dirt and debris. Pay particular attention to the seals and the shock shaft, as dirt and grime can cause wear over time.
2. Inspect the Seals:
   • Inspect the shock’s seals regularly for wear or damage. The seals keep the shock lubricated and prevent contaminants from entering the internal components. If you notice any leaks or cracks in the seals, they should be replaced immediately.
3. Check for Air Leaks:
   • Ensure that the shock’s air valve is functioning properly and free from leaks. If the shock loses air pressure, it can lead to poor performance. Use a shock pump to check the air pressure and verify that it holds steady.
4. Lubricate the Shock:
   • Periodically, lubricate the shock’s bushings and mounting hardware with a light grease to ensure smooth movement. Be sure to use a lubricant designed for suspension components to avoid damaging the seals.
5. Shock Overhaul:
   • After a season of riding or every 50-100 hours of use, consider performing a full shock overhaul. This involves disassembling the shock, cleaning the internal components, and replacing the oil. It is recommended to have this done by a professional mechanic or at a suspension service center.

Troubleshooting Common Issues with the Mara Pro Trunnion Rear Shock

While the Mara Pro Trunnion rear shock is a high-performance component, it may occasionally present some issues. Here are some common problems and how to resolve them.

Common Issues and Solutions

1. Loss of Air Pressure:
   • If you notice a loss of air pressure, check the valve for leaks. If the valve appears fine, the internal seals might need replacing. Alternatively, air loss can be caused by the shock pump’s connection not sealing properly. Double-check the connection and ensure it is secure.
2. Poor Rebound Performance:
   • If the rebound feels too fast or slow, make sure you’ve adjusted the rebound damping correctly. If the shock still behaves erratically, the oil might need to be changed, or the shock may require an internal inspection.
3. Noise from the Shock:
   • Any noise coming from the shock during compression or rebound is often due to dirt or lack of lubrication. Clean the shock and lubricate the necessary components. If the noise persists, check the bushings for wear.
4. Sag Inconsistency:
   • If the sag is inconsistent, first check the air pressure and adjust it according to your weight and riding style. If the sag still fluctuates, inspect the shock’s seals and air chamber for leaks.

Customization and Optimization for Better Performance

The Mara Pro Trunnion rear shock is designed to be highly customizable, allowing riders to optimize it for different riding conditions and personal preferences. By adjusting air pressure, damping settings, and volume spacers, you can tailor the shock’s performance to your specific needs.

Optimizing for Different Riding Styles

1. Enduro and Aggressive Riding:
   • For aggressive riders who tackle rough, technical terrain, it’s recommended to use a slightly stiffer setup with more compression damping to handle high-speed hits and big drops. Use additional volume spacers to prevent bottoming out.
2. Cross-Country and Trail Riding:
   • For lighter riders or those focusing on cross-country riding, a lower sag setting and less compression damping will result in a more efficient, faster ride. Decrease the rebound damping to allow for a quicker recovery, aiding in pedal efficiency on climbs.

Compatibility with Other Drivetrain Components

The Mara Pro Trunnion rear shock is designed to be compatible with a wide range of mountain bike frames and drivetrains. However, it is essential to ensure that your bike’s geometry and the shock’s specifications align.

Ensuring Compatibility

1. Frame Compatibility:
   • The Mara Pro Trunnion is designed for frames that feature a trunnion mount, which is more common in modern mountain bike designs. Always verify that your frame has the correct mounting hardware for the shock’s trunnion design.
2. Drivetrain Compatibility:
   • The rear shock is independent of the drivetrain but must work well with your frame’s suspension linkage and overall geometry. Ensure that the shock’s travel is compatible with your frame’s intended travel range to maintain proper suspension performance.

Conclusion

The Mara Pro Trunnion Rear Shock from Manitou stands out as a reliable, high-performance suspension component that provides exceptional customization options. Whether you’re installing it for the first time or performing routine maintenance, following the outlined steps will ensure that your shock operates at peak [paid link] efficiency. By adjusting the settings to suit your riding style, you can fully optimize the Mara Pro Trunnion for a smoother, more controlled ride. Proper maintenance and troubleshooting will help you address any issues promptly, ensuring that the shock remains in top condition for years of riding.