The Manitou Mara Inline Trunnion [paid link] rear shock is a precision component designed to enhance the performance of your mountain bike’s suspension system. Whether you’re tackling technical descents or cruising through rugged [paid link] trails, achieving the optimal tuning for your shock can significantly improve your ride quality and handling. This guide provides a thorough, step-by-step approach to installing, adjusting, maintaining, and troubleshooting your Mara Inline Trunnion [paid link], ensuring you get the most out of its advanced features.
Tools Required
- 5mm Allen wrench [paid link]
- 10mm spanner wrench
- Shock pump with a pressure gauge
- Torque wrench [paid link] (recommended)
- Rags for cleaning
- Isopropyl alcohol (for cleaning the shock and seals)
- Loctite threadlocker (optional)
Installation of the Manitou Mara Inline Trunnion
Installing the Mara Inline [paid link] Trunnion rear shock is a straightforward process but requires careful attention to detail to ensure proper setup.
Step 1: Prepare the Frame
Before installing the shock, clean the area where the shock mounts will sit. Ensure there is no dirt or debris that could damage the shock or hinder the mounting process. Use a rag and some isopropyl alcohol to wipe down the area.
Step 2: Align the Shock
Place the trunnion mount of the shock into the frame’s shock mount interface. Align the mounting holes with the respective bolts or hardware. The Mara Inline [paid link] Trunnion features a unique mounting design, so make sure the shock is positioned correctly according to your bike’s specifications.
Step 3: Secure the Shock
Using the 5mm Allen wrench [paid link], secure the shock to the frame. Ensure that the bolts are tightened to the manufacturer’s recommended torque specification (typically between 10-12 Nm). If you’re installing new bolts, it’s recommended to apply a small amount of Loctite threadlocker to prevent loosening during rides.
Step 4: Inflate the Shock
Once the shock is securely mounted, use a shock pump to set the desired air pressure. Refer to the Mara Inline Trunnion’s manual for the recommended pressure based on your weight and riding style. Typically, the air pressure is determined by your body weight, and the shock pump will allow you to fine-tune this.
Adjustment of the Mara Inline Trunnion
To achieve the best ride quality, adjusting the Mara Inline Trunnion rear shock is crucial. Fine-tuning compression and rebound settings can significantly enhance comfort and control.
Step 1: Set Your Sag
Sag is the amount the shock compresses under your weight. For the Mara Inline Trunnion, aim for around 25-30% sag, depending on the type of riding you do. To check sag, sit on your bike in your riding gear, keeping your feet on the pedals, and measure the distance the shock compresses. Adjust the air pressure using the shock pump until you achieve the desired sag.
Step 2: Adjust Compression Damping
The Mara Inline Trunnion comes with adjustable compression damping, which controls the shock’s resistance to compression during hits and impacts. Turn the compression knob clockwise for stiffer compression (ideal for smoother trails) and counterclockwise for softer compression (better for rougher terrain). Start with a medium setting and adjust based on your preference and riding conditions.
Step 3: Set Rebound Damping
Rebound damping controls how quickly the shock returns to its original position after compression. The Mara Inline Trunnion features a rebound adjustment knob to fine-tune this setting. Turn it clockwise for slower rebound (suitable for rougher trails) and counterclockwise for faster rebound (ideal for smoother trails). Set it to a medium setting initially and adjust as you feel necessary.
Step 4: Fine-Tuning
After making the basic adjustments, go for a test ride. Pay attention to how the shock reacts during different terrain changes. If you feel like the shock is too stiff or too soft, make small adjustments to the compression or rebound settings until you achieve the desired feel.
Maintenance of the Mara Inline Trunnion
Regular maintenance is essential to ensure that your Mara Inline Trunnion continues to perform at its best. Here’s how to keep it in top shape.
Step 1: Clean the Shock
After every ride, it’s important to clean the shock and its components. Use a rag and isopropyl alcohol to wipe down the shock body, paying particular attention to the seals and the mounting points. Make sure to remove any dirt, mud, or grime that could cause wear or hinder the shock’s performance.
Step 2: Inspect the Seals
Inspect the seals at both ends of the shock for any signs of wear or damage. If you notice any leaks or the seals appear compromised, it’s essential to replace them promptly to avoid further damage to the shock.
Step 3: Check the Air Pressure
Regularly check the air pressure in the shock using a shock pump, especially before long rides. Over time, air pressure can naturally decrease, and this can affect the shock’s performance. Maintaining proper pressure will ensure that the shock functions as intended.
Step 4: Service the Shock
Manitou recommends servicing your Mara Inline Trunnion every 100 hours of riding or once a year, whichever comes first. This involves a complete overhaul where the shock is disassembled, cleaned, and re-lubricated. Professional servicing ensures that all internal components, including the damping system and air chambers, remain in optimal condition.
Troubleshooting Common Issues
Even with regular maintenance, you may encounter some issues with your Mara Inline Trunnion. Here are a few common problems and how to resolve them.
Problem 1: Shock Feels Too Stiff or Too Soft
- Cause: Incorrect air pressure or compression settings.
- Solution: Recheck the air pressure to ensure it matches your weight and riding style. Adjust the compression damping settings to match the terrain.
Problem 2: Excessive Rebound
- Cause: Rebound damping set too fast.
- Solution: Adjust the rebound knob clockwise to slow down the shock’s return speed. This will prevent the shock from rebounding too quickly after compression.
Problem 3: Noisy Shock
- Cause: Dirty shock or worn seals.
- Solution: Clean the shock thoroughly and inspect the seals for any damage. If necessary, replace the seals and ensure all mounting hardware is secure.
Problem 4: Air Leaks
- Cause: Damaged seals or over-tightened valves.
- Solution: Inspect the seals for cracks or wear and replace them if necessary. Ensure the valve cap is properly tightened to avoid air leakage.
Customization and Optimization
While the Mara Inline Trunnion is a high-performance shock straight out of the box, there are several ways you can customize and optimize it for your specific needs.
Adjusting for Different Riding Styles
- Cross-Country Riders: For smoother rides with less aggressive impacts, decrease the compression damping and fine-tune the rebound for faster recovery.
- Enduro Riders: Increase the compression damping for added control during bigger hits, and adjust the rebound for a slower return.
- Downhill Riders: Set the compression to a firmer setting to withstand heavy impacts and adjust the rebound to a slower setting for better control.
Upgrading the Shock
If you want to take your Mara Inline Trunnion’s performance to the next level, consider upgrading the shock’s internal components, such as replacing the damper or swapping out the air sleeve for a different material for reduced friction. These upgrades can provide improved performance in specific conditions.
Comparison with Similar Models
While the Mara Inline Trunnion is a standout choice, there are other rear shocks that could also meet your needs depending on your riding style and preferences.
- Fox Float DPX2: A highly adjustable shock with a similar trunnion mount system, offering smooth compression and rebound adjustments. It’s ideal for riders looking for more progressive suspension behavior.
- RockShox Super Deluxe Ultimate: Another excellent option with great performance and tuning options, suitable for aggressive riders seeking higher damping control.
When comparing the Mara Inline Trunnion to these models, the Mara stands out for its smooth, consistent performance and the ease of tuning, making it an excellent choice for riders looking for reliability and versatility in their rear shock.
Compatibility with Other Drivetrain Components
The Mara Inline Trunnion is compatible with most modern mountain bike frames that feature a trunnion mount shock. However, it’s essential to ensure that your frame can accommodate the specific mounting dimensions of the Mara Inline. Check your bike frame’s specifications for compatibility with the shock’s stroke length, eye-to-eye dimension, and mounting hardware.
For optimal performance, consider how the rear shock interacts with your bike’s overall suspension setup, including the front fork and drivetrain. Matching the shock with a compatible fork and ensuring proper suspension balance will result in smoother handling and more efficient pedaling.
By following these tuning, maintenance, and troubleshooting guidelines, you can keep your Manitou Mara Inline Trunnion rear shock performing at its best, ensuring an optimal riding experience on every trail.