The Öhlins TTX22M Trunnion [paid link] rear shock is an exceptional component for riders seeking precise suspension performance and durability. Designed for aggressive trail and enduro bikes, this rear shock stands out for its innovation, adjustability, and overall performance. This guide explores the features, installation, maintenance, troubleshooting, and customization tips, making it easier for riders to maximize the potential of the TTX22M Trunnion [paid link].

Features and Benefits of the TTX22M Trunnion Rear Shock

The Öhlins TTX22M Trunnion rear shock incorporates several unique features that make it a top choice for riders looking for high-performance suspension. Here are the key attributes:

• Dual Flow Pistons: The shock is equipped with Öhlins’ patented dual flow pistons, which offer exceptional damping control. This allows for smooth absorption of both small bumps and large impacts, providing a plush ride while maintaining control.
• Trunnion Mounting System: The trunnion mounting system allows for easier frame integration, particularly on bikes with limited space for conventional shocks. This design minimizes weight while maximizing the shock’s effectiveness, ensuring superior performance in rough conditions.
• Adjustability: The TTX22M features a wide range of adjustments, including rebound, high-speed compression, and low-speed compression. This allows riders to fine-tune the shock for different terrains and riding styles, making it incredibly versatile [paid link].
• Durability: Öhlins is renowned for its high-quality manufacturing, and the TTX22M is no exception. The shock is built to last, with a hard-anodized aluminum body and a robust design that can withstand even the harshest riding conditions.

Installation of the TTX22M Trunnion Rear Shock

Installing the TTX22M Trunnion rear shock requires a certain level of expertise. Here is a step-by-step guide to help you through the process:

Tools Required:

• 5mm and 6mm Allen wrenches [paid link]
• Torque wrench [paid link] (with correct torque settings for your bike)
• 17mm socket wrench
• A soft rag or cloth for protection during installation

Installation Steps:

1. Prepare the Bike: Secure your bike on a work stand, ensuring it is stable. Make sure the rear wheel is removed to prevent any obstructions.
2. Remove the Existing Shock: If your bike has a shock already installed, use a 5mm Allen wrench [paid link] to remove the bolts holding it in place. Set the shock aside.
3. Clean the Mounting Area: Wipe the frame’s mounting area clean of any dirt, debris, or grease. This ensures the new shock will fit securely.
4. Position the TTX22M Shock: Place the TTX22M shock in the frame, aligning the trunnion mount with the frame’s shock eyelet. The shock should be placed so that the body is facing the correct direction according to the frame design.
5. Secure the Mounting Bolts: Insert the trunnion mounting bolts and tighten them with the 6mm Allen wrench [paid link]. Make sure the bolts are torqued to the manufacturer’s specifications.
6. Check for Movement: After securing the shock, check for any unwanted movement. It should be snug, with no play between the shock and the frame.
7. Reinstall the Rear Wheel: Once the shock is installed and secured, reinstall the rear wheel and check the rear suspension movement to ensure it operates smoothly.

Adjustment and Maintenance of the TTX22M Trunnion Rear Shock

To get the most out of your TTX22M rear shock, regular maintenance and correct adjustment are essential. Below are some tips for maintaining optimal performance:

Rebound Adjustment:

The rebound adjuster allows you to control how quickly the shock returns after compressing. If the shock rebounds too quickly or too slowly, it can affect handling and comfort. Adjust the rebound knob clockwise to slow the rebound or counterclockwise to speed it up.

Compression Adjustment:

There are two types of compression adjustments available on the TTX22M: high-speed and low-speed. Both are crucial for fine-tuning the shock’s performance:

• Low-Speed Compression: This controls how the shock responds to slower compressions, such as when you land a jump or hit a small bump. It can be adjusted via a knob on the shock body.
• High-Speed Compression: This affects the shock’s response to rapid compressions, such as during high-speed impacts. Adjusting the high-speed compression helps prevent bottoming out in extreme situations.

Regular Maintenance:

Öhlins recommends servicing the TTX22M rear shock regularly to keep it performing at its best. This involves checking for any wear on the shock shaft, inspecting the seals, and ensuring the shock oil levels are adequate. A full rebuild should be done at least once per year, or more frequently if you ride in harsh conditions.

Air Pressure Checks:

For air-sprung shocks, checking the air pressure regularly is crucial. The TTX22M requires a specific air pressure based on rider weight and riding style. Öhlins provides a pressure chart to guide you, but fine-tuning it based on personal preferences and terrain is essential for maximum performance.

Troubleshooting Common Set-Up Issues

While the TTX22M Trunnion rear shock is designed for high performance, riders may encounter some issues during setup or while riding. Below are some common problems and their solutions:

• Shock Bottoming Out: If you experience bottoming out, check your high-speed compression settings. Increasing the high-speed compression will reduce the shock’s travel during heavy impacts.
• Excessive Rebound or Slow Rebound: If the shock rebounds too quickly or too slowly, adjust the rebound setting to find the optimal speed for your riding style.
• Inconsistent Performance: If the shock feels inconsistent or lacks smooth travel, it may be a sign that it needs servicing. Inspect the seals and oil levels and consider sending it in for a full rebuild.

Customization and Optimization for Better Performance

The TTX22M Trunnion rear shock can be customized to suit a variety of riding styles and terrain conditions. Here are a few tips for optimizing your suspension:

• Adjusting the Air Pressure: Fine-tuning the air pressure based on your weight and riding style is one of the easiest ways to improve performance. Experiment with different pressures to find the best balance between plushness and support.
• Fine-Tuning Compression Settings: For technical, rocky terrain, increasing low-speed compression can provide better support, while reducing high-speed compression may help absorb larger impacts more effectively.
• Rebound Speed Adjustment: If you prefer a more controlled, smoother ride, slow down the rebound slightly to prevent the shock from feeling too “bouncy” during rapid compressions.

Comparison with Similar Models

When comparing the TTX22M Trunnion rear shock to other models on the market, such as the RockShox Super Deluxe or Fox Float X2, the Öhlins shock stands out due to its dual flow piston technology and superior damping. The trunnion mount system also provides a unique advantage in terms of installation and frame compatibility, especially for bikes with limited shock clearance. While the other models offer competitive performance, the TTX22M’s fine-tuning options and durability make it a strong contender for riders seeking both reliability and performance in challenging conditions.

Compatibility with Other Drivetrain Components

The TTX22M Trunnion rear shock is compatible with most modern mountain bike drivetrains. However, when upgrading your suspension, it’s important to ensure that your shock’s specifications align with your bike’s frame design and intended use. The shock’s trunnion mount system is designed to work with specific frame types, so always double-check the compatibility with your bike before purchasing. Additionally, make sure your bike’s other components, such as the fork and wheels, match the performance level of the TTX22M to ensure a balanced ride.