The Öhlins TTXAir 2.1 rear shock is a high-performance shock absorber designed for advanced mountain biking. Its precision engineering and versatile design allow riders to enjoy superior control, comfort, and performance in a wide range of conditions. This guide will walk you through the installation, adjustment, and maintenance of the TTXAir 2.1, as well as troubleshooting common issues and optimizing it for better performance.

Installation of the TTXAir 2.1

Installing the Öhlins TTXAir 2.1 rear shock is a precise task that requires attention to detail to ensure proper functioning. Follow these steps for correct installation:

1. Prepare the Bike Frame: Before installing the shock, clean the mounting points on the bike frame to avoid dirt or debris during the process.
2. Align the Shock with Mounting Points: The TTXAir 2.1 is designed with specific mounting hardware that corresponds with your bike frame’s shock mounts. Carefully align the shock with these points and ensure the shock’s eyelets are correctly positioned.
3. Attach the Shock: Use the appropriate bolts to attach the shock to the frame. Tighten them securely with a torque wrench [paid link] to the manufacturer’s recommended torque settings.
4. Check for Clearance: Once the shock is mounted, check for any interference between the shock and other components, especially during full suspension travel.

Adjustment of the TTXAir 2.1

The TTXAir 2.1 comes with multiple adjustments to fine-tune your ride to suit different riding styles and terrains. Proper adjustment of the shock can greatly enhance the bike’s handling, comfort, and performance.

Rebound Adjustment

The rebound adjustment controls how quickly the shock returns to its original position after being compressed.

• Locate the Rebound Dial: The rebound adjustment dial is typically located on the shock’s remote or on the shock body itself.
• Adjust for Comfort: Turning the dial clockwise increases rebound damping, making the shock return slower, while turning it counterclockwise speeds up the return. Start with a medium setting and fine-tune based on your riding experience.

Air Pressure Adjustment

Air pressure is one of the most important aspects of shock performance, as it directly influences the shock’s compression and overall feel.

• Set the Rider Weight: To adjust air pressure, you first need to know your rider weight. Use this information to select the correct pressure for optimal performance.
• Pump to Desired Pressure: Use an accurate shock pump to adjust the air pressure to the recommended settings. Always check the manufacturer’s guide for exact air pressure recommendations based on your weight and riding style.

Compression Adjustment

The compression adjustment determines how much the shock resists compression during impacts and rough terrain.

• Locate the Compression Dial: The compression adjustment dial is typically located on the shock body.
• Fine-tune Compression: Turning the dial clockwise increases compression damping, making the shock stiffer. Turning it counterclockwise decreases damping, making the shock softer. Adjust the setting based on the type of terrain you’re riding, aiming for a balance between comfort and control.

Maintenance of the TTXAir 2.1

To keep your Öhlins TTXAir 2.1 performing at its best, regular maintenance is essential. Below are the key tasks for keeping the rear shock in top condition:

Regular Cleaning

• Wipe the Shock: After each ride, wipe down the shock with a clean, dry cloth to remove dirt, mud, and water. This prevents debris from entering the seals.
• Check for Leaks: Inspect the shock’s seals regularly for any signs of wear or oil leakage. Leaking seals should be replaced immediately to avoid damage to the internal components.

Air Pressure Checks

• Check Pressure: Air pressure naturally decreases over time, so it is important to check and adjust the pressure regularly, especially before long rides.
• Inspect Schrader Valve: Ensure the Schrader valve is properly tightened and does not leak air.

Rebound and Compression Adjustments

• Revisit Settings: As terrain and riding conditions change, so should your shock settings. Regularly revisit the rebound and compression adjustments to ensure optimal performance.

Professional Service

• Annual Service: For long-term performance, consider sending your TTXAir 2.1 for an annual service. Öhlins provides service kits and professional maintenance for their shocks, which helps extend the lifespan of the shock.
• Seal Replacement: Over time, seals wear out. During a service, replace any worn seals or parts to maintain peak performance.

Troubleshooting Common Issues

While the Öhlins TTXAir 2.1 is a highly reliable shock, you may encounter some issues. Here’s how to troubleshoot common problems:

Air Loss

• Cause: Air loss can occur due to a damaged seal or valve.
• Solution: Inspect the Schrader valve for damage. If the seal is worn or the valve is leaking, replace the parts or take the shock in for service.

Poor Rebound Performance

• Cause: If the rebound feels too slow or fast, it may be due to incorrect adjustment or internal friction.
• Solution: Double-check the rebound settings and adjust accordingly. If problems persist, the shock may require servicing to replace worn components.

Lack of Compression

• Cause: A lack of compression damping may indicate an internal issue or low oil levels.
• Solution: Inspect the shock for oil leakage. If oil levels are low, send the shock in for a service to restore proper damping.

Customization and Optimization for Better Performance

To optimize your TTXAir 2.1 for better performance, consider the following customizations:

Tailoring Air Pressure

Fine-tuning the air pressure based on your weight and riding style can dramatically enhance performance. For aggressive riders or those tackling technical terrain, increasing the air pressure can provide more support and responsiveness. Conversely, for more comfortable and cushioned rides, a lower pressure setting will improve comfort.

Adjusting Compression and Rebound for Terrain

For downhill riders, using a higher compression setting with a slower rebound rate can provide better stability on rough terrain. On smoother trails, adjusting to a lighter compression setting and faster rebound may offer more comfort and control.

Using a Custom Tune Kit

Öhlins offers custom tuning kits for the TTXAir 2.1 that allow you to further tweak the shock’s performance. These kits include various components like different damping settings and additional seals, offering a more personalized ride experience.

Compatibility with Other Drivetrain Components

The TTXAir 2.1 is designed to work seamlessly with most modern mountain bike drivetrains. However, compatibility with your bike’s other components should be checked, especially when upgrading or building a bike from scratch.

• Frame Compatibility: Ensure that the shock’s eyelet dimensions match those of your bike frame. The TTXAir 2.1 is compatible with many high-end frames, but it’s crucial to check the specifications.
• Suspension Linkage: The shock works best when paired with compatible suspension linkages. Some frames may require specific linkages or adapters for optimal performance.
• Drivetrain Integration: While the TTXAir 2.1 does not directly affect drivetrain components, ensure that the shock does not interfere with other parts, such as the rear derailleur or chainring, especially in frames with tight clearance.

Conclusion

The Öhlins TTXAir 2.1 rear shock is a remarkable piece of engineering designed to enhance your mountain biking experience. Its adjustability and performance-oriented design allow for customization based on rider preferences and terrain conditions. With regular maintenance, careful adjustments, and proper installation, the TTXAir 2.1 can provide a superior ride for years to come. By addressing common issues and understanding its compatibility, you can ensure that the shock remains a reliable and high-performing component of your bike.