The Öhlins TTX2Air rear shock is a high-performance suspension component designed for riders seeking optimal performance and adjustability. As with any top-tier component, regular preventative maintenance ensures the shock functions at its best, extending its lifespan and providing you with the smoothest ride possible. This guide covers the essential steps for maintaining, adjusting, and troubleshooting your TTX2Air shock, ensuring it operates at peak performance for every ride.

Tools Required

• Torque wrench [paid link]
• 8mm and 10mm Allen wrenches [paid link]
• Shock pump
• Clean cloths
• Isopropyl alcohol
• 5mm Allen wrench [paid link]
• Suspension fluid (Öhlins recommended type)
• Oil bath container (for fluid change)

Installation of the TTX2Air Rear Shock

Before installing the TTX2Air rear shock, ensure your bike frame is compatible with the shock’s mounting system. Follow these steps for a correct installation:

1. Prepare the Bike: Lift the rear of your bike and secure it on a stand.
2. Remove the Old Shock (if applicable): Use the appropriate tools to remove any existing shock. Take care not to damage the mounting hardware.
3. Install the TTX2Air: Insert the shock into the mounting points of the frame. Ensure that the shock is oriented correctly, with the air valve and adjusters facing outward for ease of access.
4. Torque the Mounting Bolts: Tighten the mounting bolts with a torque wrench [paid link], following the recommended torque values (consult the Öhlins manual for exact numbers).
5. Set Initial Air Pressure: Use a shock pump to set the initial air pressure according to your body weight and riding style. A good starting point is generally around 20-30% sag, but this can be adjusted to suit your needs.
6. Check for Smooth Movement: With the shock installed, compress and extend it to ensure smooth and responsive movement.

Adjustment and Customization

One of the standout features of the TTX2Air rear shock is its adjustability. To fine-tune your suspension for optimal performance, follow these steps for the various adjustment dials:

Rebound Adjustment

• Purpose: Rebound controls the speed at which the shock returns to its original position after being compressed.
• How to Adjust: Turn the rebound dial located at the base of the shock. If you find the shock returning too quickly or too slowly, adjust the dial until you find the optimal setting.
• Recommended Settings: Start with the dial set to the middle position and make incremental adjustments from there. If the shock is too fast, slow it down; if it’s too slow, increase the rebound speed.

Compression Damping Adjustment

• Purpose: Compression damping controls how quickly the shock compresses under impact. Adjusting this can help improve handling on rough terrain or smooth trails.
• How to Adjust: Use the compression adjuster located on the shock body. Turn it clockwise for a firmer compression or counterclockwise for a softer response.
• Recommended Settings: Begin with the compression dial set in the middle range, and adjust based on the terrain you plan to ride. Softer compression is ideal for technical and rough trails, while firmer compression works well for smoother paths.

Air Pressure Adjustment

• Purpose: Adjusting the air pressure allows you to control the shock’s overall firmness, affecting both comfort and performance.
• How to Adjust: Use a shock pump to either add or release air from the valve located at the top of the shock. Adjust the air pressure according to your weight and riding style to achieve the desired sag.
• Recommended Settings: Aim for a sag of about 25-30% of the shock’s total travel, depending on your preference.

Preventative Maintenance for TTX2Air

Regular Cleaning

Keeping your TTX2Air rear shock clean is essential for optimal performance and longevity. After every ride, particularly on muddy or dusty trails, wipe down the shock with a clean cloth. Avoid using harsh chemicals or high-pressure water, as they can damage the seals. For stubborn dirt, use a cloth dampened with isopropyl alcohol.

Inspecting the Seals

The seals on your TTX2Air shock help prevent dirt and debris from entering the shock body, ensuring smooth operation. Regularly inspect these seals for signs of wear, such as cracking or fraying. If damaged, replace the seals immediately to prevent further damage to the shock internals.

Checking for Leaks

A critical part of maintaining your shock is checking for any signs of air or fluid leaks. If you notice a loss of air pressure or see oil on the shock body, this indicates a potential leak. Inspect the shock’s seals and the air valve for any visible damage. If you suspect a leak, it may be necessary to disassemble the shock for a deeper inspection and repair.

Fluid Maintenance

The TTX2Air features an oil bath that helps lubricate internal components. Over time, this fluid can degrade and lose its effectiveness, affecting the performance of the shock. It’s recommended to change the suspension fluid every 100 hours of riding or annually, whichever comes first.

To change the fluid:

1. Disassemble the Shock: Remove the shock from the bike and disassemble it carefully. Refer to the Öhlins manual for the exact disassembly procedure.
2. Drain the Old Fluid: Use an oil bath container to catch the old fluid. Allow the shock to drain fully.
3. Clean the Internals: Use isopropyl alcohol to clean the internal parts of the shock, including the piston and seals.
4. Refill with New Fluid: Fill the shock with the recommended suspension fluid, ensuring it is the correct type and quantity for your TTX2Air model.
5. Reassemble the Shock: Once the fluid change is complete, reassemble the shock and reinstall it on your bike.

Troubleshooting Common Issues

While the TTX2Air is a high-performance shock, issues can still arise over time. Here are some common problems and how to troubleshoot them:

Loss of Air Pressure

If you notice a loss of air pressure, this could be due to a damaged seal or a problem with the valve. Inspect the shock for leaks and test the valve for any loose connections. If the seals are damaged, they will need to be replaced.

Excessive Sag or Stiffness

If the shock feels too soft or too stiff, it could be due to improper air pressure or compression damping settings. Adjust the air pressure according to your weight and riding style, and fine-tune the compression damping to suit the terrain you are riding on.

Unusual Noises

Unusual noises such as squeaks or clunks could indicate a problem with the shock’s internals or mounting points. Ensure that the mounting bolts are torqued correctly, and inspect the shock for any signs of damage. If the problem persists, it may be necessary to have the shock serviced by a professional.

Comparison with Similar Models

When considering the Öhlins TTX2Air rear shock, it’s important to compare it with other models to ensure it meets your needs. In comparison to traditional coil shocks, the TTX2Air offers the advantage of lighter weight and better adjustability, making it ideal for riders who want both performance and efficiency. However, coil shocks may offer better overall durability and a more plush feel for riders who frequently tackle very rough trails.

Additionally, compared to other air shocks in its class, the TTX2Air excels in its compression and rebound damping adjustments, offering more precise tuning. However, it may come at a higher price point, which is something to consider for riders on a budget.

Compatibility with Other Drivetrain Components

The TTX2Air rear shock is designed to be compatible with a wide range of mountain bike frames, particularly those with a standard shock mount. However, it is crucial to ensure that your frame’s suspension system is compatible with the shock’s specifications, including its eye-to-eye length and stroke. Always check with the bike manufacturer or your local bike shop if you’re unsure about compatibility before making a purchase. Additionally, while the shock is designed to work seamlessly with most drivetrain components, ensuring proper frame and shock geometry is essential for achieving optimal performance.