The Öhlins TTX22M Trunnion [paid link] rear shock is a high-performance suspension component designed for advanced riders seeking optimal control and comfort. This shock is engineered with a focus on precision, durability, and adjustability, making it a top choice for riders aiming to fine-tune their bike’s performance. In this guide, we will walk you through the key aspects of the TTX22M Trunnion [paid link] rear shock, including installation, maintenance, troubleshooting, customization, and comparisons with similar models.

Key Features of the TTX22M Trunnion Rear Shock

The TTX22M Trunnion rear shock is known for several distinctive features that set it apart from other suspension systems:

• TTX Technology: This advanced twin-tube damper technology allows for better oil flow and reduces the risk of cavitation, ensuring smoother performance over rough terrain.
• Trunnion Mounting System: The trunnion design offers a more compact and rigid mounting setup compared to traditional eyelet mounts. This design enhances stiffness, providing better power transfer and stability.
• Wide Range of Adjustments: The TTX22M offers multiple adjustability options, including compression, rebound, and preload settings. This allows riders to dial in their suspension to match their riding style and specific conditions.
• Durable Construction: The shock features a high-quality aluminum body and a robust damper system designed to withstand intense riding conditions, ensuring long-lasting performance.

Tools Required

To install or maintain the TTX22M Trunnion rear shock, you will need the following tools:

• Torque wrench [paid link]
• Shock pump
• 8mm and 10mm wrenches
• Allen key set (typically 3mm to 6mm)
• Soft cloth or rag for cleaning
• Hydraulic suspension fluid (if needed)
• Cleaning brush (for suspension components)

Installation of the TTX22M Trunnion Rear Shock

The installation of the TTX22M Trunnion rear shock is straightforward but requires careful attention to detail. Follow these steps to ensure proper installation:

1. Prepare the Bike Frame: Begin by removing the old rear shock (if applicable). Clean the area around the shock mounts on the frame to avoid any dirt or debris from interfering with the installation.
2. Check Compatibility: Ensure the TTX22M Trunnion shock is compatible with your bike’s suspension design. The trunnion mounting system is different from traditional eyelet systems, so double-check that your frame supports this type of shock.
3. Align the Shock: Position the shock with the mounting eyelets aligned with the frame’s trunnion mounts. The shock should fit snugly into place without forcing it.
4. Insert the Bolts: Install the mounting bolts through the trunnion mounts, ensuring that they are threaded properly. Use a torque wrench [paid link] to tighten them to the manufacturer’s recommended settings (usually around 10-12Nm).
5. Reinstall Other Components: If you removed any other components for access, such as the rear wheel or linkage, reinstall them following the manufacturer’s instructions.
6. Set the Sag: Using a shock pump, inflate the shock to the recommended pressure based on your weight and riding style. Check the sag to ensure it is set correctly, usually between 25-30% of the shock’s total travel.
7. Final Checks: Inspect the shock for any signs of improper installation, such as misalignment or loose bolts. Perform a quick test ride to verify that everything feels secure and functional.

Adjusting the TTX22M Trunnion Rear Shock

The TTX22M Trunnion rear shock provides a variety of adjustments to optimize your ride. These adjustments include:

Compression Adjustment

• Low-speed compression: This controls how the shock responds to small bumps and low-speed impacts. Adjust this setting to find the ideal balance between comfort and control.
• High-speed compression: This affects how the shock handles larger impacts and fast hits. A higher setting will provide more resistance to hard hits, while a lower setting will allow for more absorption.

Rebound Adjustment

The rebound adjustment controls how quickly the shock returns to its original position after compression. Too fast, and it can lead to instability; too slow, and you may experience a sluggish ride. Adjust the rebound to ensure smooth, controlled movement during descents.

Preload Adjustment

Preload affects the initial tension in the spring and can be adjusted to suit your weight and riding style. A correct preload setting ensures that the shock functions efficiently throughout its travel range.

Maintenance of the TTX22M Trunnion Rear Shock

Regular maintenance is essential to keep your TTX22M Trunnion rear shock in peak [paid link] condition. Here’s how to maintain it:

• Clean the Shock Regularly: After each ride, wipe down the shock with a soft cloth to remove dirt and grime. Use a cleaning brush for hard-to-reach areas, especially around the seals.
• Inspect for Leaks: Periodically check the shock for oil leaks or damage to the seals. If you notice any signs of fluid loss, it may be time for a service.
• Service Intervals: Follow Öhlins’ recommended service intervals for oil changes and damper checks. Typically, a complete service should be done every 100-150 hours of riding.
• Lubricate Seals: Apply a light coat of suspension-specific grease to the seals every few months to keep them functioning properly.

Troubleshooting Common Issues

While the TTX22M Trunnion rear shock is a reliable component, occasional issues may arise. Here are some common problems and their solutions:

• Shock Feeling Stiff or Not Responsive: This may indicate incorrect compression or rebound settings. Adjust both settings to see if it improves. If the issue persists, check for internal damage or low oil levels.
• Sag Not Correct: If the shock’s sag is too high or too low, adjust the air pressure using a shock pump. Recheck the sag and make sure it is within the recommended range for your body weight.
• Oil Leaks: Oil leaks are usually caused by damaged seals. If you notice oil around the shock body or mounting area, it is best to send the shock to a service center for a full rebuild.

Customizing the TTX22M Trunnion Rear Shock for Performance

To fully optimize the TTX22M Trunnion rear shock for your needs, consider the following adjustments:

• Spring Rate: If you frequently ride on rough, technical trails, you may want to experiment with a firmer spring to handle more significant impacts. Conversely, a softer spring can improve comfort on smoother trails.
• Compression Settings: Adjust the low and high-speed compression to match your riding conditions. For aggressive downhill riding, stiffer compression will provide more control, while softer compression will allow for better comfort on cross-country rides.
• Rebound Speed: Tailor the rebound speed to your riding style. Faster rebound settings can give you more control when descending, while slower rebound speeds can smooth out harsh impacts.

Compatibility with Other Drivetrain Components

The TTX22M Trunnion rear shock is designed to be compatible with a wide range of bikes, particularly those with modern suspension designs that accommodate trunnion-mounted shocks. However, it’s important to ensure the shock is paired with compatible drivetrain components to ensure smooth integration:

• Rear Linkage Compatibility: Ensure that your bike’s rear linkage is designed for trunnion mounts. Some frames with traditional eyelet mounts may require an adapter to fit the TTX22M.
• Dropout and Linkage Geometry: Make sure your bike’s dropout and linkage geometry are suitable for the TTX22M’s travel and shock rates. A mismatch could lead to suboptimal performance.

Comparison with Similar Models

When comparing the TTX22M Trunnion to similar rear shocks on the market, it stands out due to its unique combination of performance, durability, and adjustability. While models like the Fox Float X2 or RockShox Super Deluxe provide similar adjustability, the TTX22M offers superior damping control and smoother travel thanks to its TTX technology. Additionally, the trunnion mounting system offers improved stiffness over eyelet-based shocks, making the TTX22M ideal for riders seeking maximum precision.