The Mara Pro Trunnion [paid link] by Manitou is a high-performance rear shock designed for riders who demand precision and customization in their suspension setup. Whether you’re looking to fine-tune your shock for better comfort, efficiency, or responsiveness, proper tuning can significantly enhance your riding experience. This guide will walk you through the installation, adjustment, maintenance, troubleshooting, and customization of your Mara Pro Trunnion [paid link] rear shock, ensuring it performs at its best for your unique riding style.
Tools Required
- Shock pump
- Torque wrench [paid link]
- 5mm Allen wrench [paid link]
- 8mm socket wrench
- Small screwdriver (for adjusting rebound)
- Clean rags
- Suspension grease
- Manitou-specific shock oil (if needed for servicing)
Installation of the Mara Pro Trunnion Rear Shock
Installing the Mara Pro [paid link] Trunnion rear shock correctly is crucial to ensure optimal performance and longevity. Follow these steps for a smooth installation:
- Remove the Existing Shock
If replacing an old shock, first remove the rear wheel for better access. Use a 5mm Allen wrench [paid link] to loosen the shock bolts at both the top and bottom mounts. - Prepare the Frame and Shock
Clean the mounting areas on the frame and shock to prevent dirt or debris from causing wear. Apply a thin layer of suspension grease to the shock’s mounting hardware to ensure smooth movement and prevent corrosion. - Install the New Shock
Align the shock’s eyelets with the frame’s trunnion mounts. Secure the shock using the appropriate bolts, tightening them to the manufacturer’s recommended torque settings (typically around 10-15 Nm for most frames). - Reinstall the Rear Wheel
Once the shock is installed, replace the rear wheel and check the alignment to ensure everything is seated correctly. - Initial Setup
Before riding, use a shock pump to set the appropriate air pressure based on your weight, riding style, and the manufacturer’s specifications.
Adjusting the Mara Pro Trunnion Rear Shock
The Mara Pro [paid link] Trunnion offers various adjustments to help you fine-tune the shock for your specific riding preferences. Here are the key adjustments and how to use them effectively:
Rebound Adjustment
Rebound controls how quickly the shock returns to its normal position after compression. Adjusting the rebound affects the bike’s handling, especially during fast descents.
- To adjust: Turn the rebound knob, located at the bottom of the shock, clockwise to slow the rebound and counterclockwise to speed it up.
- What to look for: If the shock rebounds too quickly, it may lead to a bouncy ride and poor control on rough terrain. If the rebound is too slow, it can cause the shock to feel sluggish and unresponsive.
Compression Adjustment
The compression damping controls how the shock absorbs impacts from bumps, rocks, and other obstacles. Proper compression adjustment allows for better comfort and control during your ride.
- To adjust: The Mara Pro Trunnion typically features an external compression dial or knob that can be adjusted for high-speed and low-speed compression. The low-speed compression controls how the shock responds to smaller, slower compressions, while high-speed compression affects the shock’s reaction to fast impacts.
- What to look for: For a more aggressive ride, set the compression to a firmer setting to improve pedaling efficiency and control. For more comfort on technical trails, soften the compression for smoother impact absorption.
Air Pressure
Air pressure is one of the most important aspects of suspension tuning. It affects the shock’s sag, which influences your bike’s handling, performance, and comfort.
- To adjust: Use a shock pump to increase or decrease the air pressure in the shock. The recommended air pressure varies based on your weight and riding style, so refer to the Mara Pro Trunnion’s manual for guidance.
- What to look for: Proper air pressure is vital to achieving the right amount of sag, typically around 25-30% of the shock’s total travel. Too much pressure will make the shock feel stiff, while too little will make it too soft and potentially bottom out on big impacts.
Maintenance of the Mara Pro Trunnion Rear Shock
Regular maintenance is key to ensuring that your Mara Pro Trunnion rear shock performs optimally over time. Follow these steps for basic maintenance:
Clean the Shock Regularly
Dirt, grime, and mud can affect the shock’s performance by causing friction and wear. After each ride, use a clean rag to wipe down the shock, focusing on the seals and the areas where the shock compresses.
Check for Leaks
Inspect the shock’s air valve and seals for any signs of air leaks. A leaking shock will not maintain the correct pressure, which can lead to inconsistent performance.
Service the Shock Periodically
Depending on usage, the Mara Pro Trunnion may need to be serviced. This involves disassembling the shock, cleaning the internal components, and replacing the oil. Manitou recommends servicing the shock every 100-150 hours of riding or once per year, whichever comes first.
- To service: Use Manitou-specific shock oil to lubricate the shock’s internal components. If you’re unfamiliar with this process, it’s best to have a professional mechanic perform the service.
Troubleshooting Common Issues with the Mara Pro Trunnion Rear Shock
While the Mara Pro Trunnion is a reliable shock, some issues may arise that can affect its performance. Here are common problems and how to troubleshoot them:
Problem: The Shock Feels Too Soft or Bottoms Out
- Cause: This may be due to low air pressure or too soft compression settings.
- Solution: Increase the air pressure to the recommended level and adjust the compression settings for a firmer response. Check the sag and ensure it’s within the optimal range.
Problem: The Shock Is Bouncy or Rebounds Too Quickly
- Cause: Too much rebound or insufficient compression damping.
- Solution: Slow down the rebound by turning the rebound knob clockwise. If the shock feels unresponsive on rough terrain, increase the low-speed compression damping.
Problem: The Shock Is Leaking Air
- Cause: A worn seal or damaged air valve.
- Solution: Inspect the air valve and seals. If any are damaged, replace them or take the shock to a professional for servicing.
Customizing and Optimizing the Mara Pro Trunnion Rear Shock
Customization can take your Mara Pro Trunnion rear shock to the next level, improving your ride for specific terrain or riding conditions.
Fine-Tuning for Specific Trails
If you’re riding on technical trails with lots of rocks and roots, you may want to set the shock to a more plush setting to absorb impacts. On smoother trails or while climbing, a firmer setting may help with pedaling efficiency.
Experimenting with Damping Settings
Changing both low-speed and high-speed compression can dramatically alter how the shock handles various terrain. Experiment with different settings to find the best balance between comfort and performance for your riding style.
Comparison with Other Rear Shocks
When considering a rear shock like the Mara Pro Trunnion, it’s important to compare it with similar models to ensure you’re making the right choice.
Mara Pro Trunnion vs. Fox Float X2
The Fox Float X2 is another high-performance rear shock known for its versatility and adjustability. While both shocks offer rebound and compression adjustments, the Mara Pro Trunnion tends to provide a more consistent feel across different riding conditions, making it a great option for trail and enduro riders. The Fox Float X2, on the other hand, might be better suited for riders who prioritize high-speed stability and fine-tuned adjustments.
Mara Pro Trunnion vs. RockShox Super Deluxe
The RockShox Super Deluxe is another popular rear shock that shares many similarities with the Mara Pro Trunnion in terms of air pressure adjustments and damping. However, the Mara Pro Trunnion’s trunnion mount design provides a more secure and robust mounting system, offering better stiffness and improved power transfer, especially during aggressive riding.
Compatibility with Other Drivetrain Components
The Mara Pro Trunnion is compatible with a wide range of modern mountain bike frames and drivetrains. When selecting components to pair with this shock, it’s essential to consider factors such as:
- Frame Compatibility: Ensure your frame is designed for a trunnion-style mount to use the Mara Pro Trunnion shock.
- Drivetrain Matching: The shock’s performance can be optimized by pairing it with a drivetrain that complements its characteristics. A high-performance drivetrain, like SRAM or Shimano’s latest models, works well with the precise damping control of the Mara Pro Trunnion.
By following the steps outlined in this guide, you can ensure your Mara Pro Trunnion rear shock performs at its best, giving you a smooth and controlled ride every time. Regular maintenance, careful adjustment, and thoughtful customization will help you extract maximum performance from this high-quality shock.