The Öhlins TTX22M Trunnion [paid link] rear shock is renowned for its exceptional performance and durability. Regular maintenance is essential to ensure it continues to provide optimal performance, handling, and comfort. This guide will walk you through the preventative maintenance required for the TTX22M Trunnion [paid link], including installation, adjustment, troubleshooting, and optimization.

Tools Required

• 5mm, 6mm, and 8mm Allen wrenches [paid link]
• Torque wrench [paid link]
• Oil syringe
• Suspension fluid (Öhlins recommended)
• Shock pump
• Cleaning cloths
• Safety gloves
• Isopropyl alcohol
• Pliers

Installation of the TTX22M Trunnion Rear Shock

Proper installation of the TTX22M Trunnion rear shock is crucial for its performance and longevity. Follow these steps to ensure a secure and correct installation:

1. Prepare the bike: Ensure that your bike frame is clean and free of debris. Inspect the shock mounting points to make sure there is no damage or excessive wear.
2. Remove the old shock: Use the appropriate Allen wrenches [paid link] to remove the existing rear shock. Make sure you safely store the hardware for reuse if you’re replacing an older shock.
3. Mount the new shock: Align the TTX22M Trunnion with the trunnion mount on the frame. Slide the shock into place, ensuring it fits securely into the mount.
4. Torque the bolts: Tighten the shock mounting bolts with a torque wrench [paid link], following the manufacturer’s recommended torque settings. Over-tightening can damage the shock or frame, while under-tightening may cause the shock to come loose during use.
5. Double-check alignment: After installation, verify that the shock is aligned properly and the linkage operates smoothly without binding.

Adjustment of the TTX22M Trunnion Rear Shock

Fine-tuning your TTX22M Trunnion rear shock is essential for achieving the best performance for your riding style and conditions. The TTX22M features several adjustable settings to tailor the shock to your needs.

1. Spring rate: Choose the appropriate spring for your weight and riding style. The TTX22M uses a coil spring that can be swapped based on your needs. If you’re unsure, consult Öhlins’ spring rate chart.
2. Rebound damping: The rebound damping controls the rate at which the shock returns to its original position after compression. Adjust the rebound knob to match your riding conditions. For fast riding, a faster rebound is recommended; for technical, rocky trails, a slower rebound may provide more control.
3. Compression damping: The TTX22M allows fine-tuning of the low and high-speed compression. The low-speed adjustment helps control how the shock responds to small bumps, while the high-speed adjustment manages larger hits. Start by adjusting the low-speed compression to your preferred firmness, then dial in the high-speed compression for big impacts.
4. Air pressure: If you’re using the TTX22M with an air spring (depending on your setup), adjust the air pressure with a shock pump to suit your weight and riding style.

Preventative Maintenance and Lubrication

Regular maintenance will prevent premature wear and ensure that the TTX22M continues to perform at its best. Here’s a routine maintenance plan:

1. Cleaning the shock: After every ride, wipe down the shock with a clean, dry cloth. This helps prevent dirt and grime from entering the shock’s seals. For a deeper clean, use a cloth dampened with isopropyl alcohol to wipe the shock body, paying close attention to the area around the seals.
2. Seal care: Inspect the seals regularly for any signs of wear or damage. Apply a thin layer of suspension grease around the seals to keep them lubricated. Avoid using excessive grease, as it can attract dirt and cause performance issues.
3. Check for air leaks: Inspect the shock for any signs of air leaks, especially around the air valve and seals. If you notice a loss of air pressure, it could indicate a seal failure that requires attention.
4. Suspension fluid replacement: Over time, the suspension fluid inside the shock can degrade, affecting performance. Replace the oil every 50-100 hours of riding or after any major suspension event. Use only the recommended Öhlins suspension fluid to maintain optimal performance.

Troubleshooting Common Issues

Despite its durability, the TTX22M Trunnion rear shock may experience occasional issues. Here are some common problems and how to resolve them:

1. Sag issues: If the shock feels too soft or too hard, check the spring rate and adjust accordingly. If you’re using an air spring, adjust the air pressure to your desired level.
2. Damping not working correctly: If the rebound or compression damping doesn’t seem to be adjusting properly, it could be due to internal oil contamination or low fluid levels. Perform a full service on the shock and replace the fluid if necessary.
3. Noisy shock: If the shock is making unusual noises during compression or rebound, it might be due to dirt or debris in the shock body. Clean the shock thoroughly and inspect the seals for damage. If noise persists, it might indicate that the shock requires a rebuild.
4. Loss of travel or stiffness: If the shock isn’t performing with its full travel or feels too stiff, check the spring rate and air pressure. A drop in performance could also indicate the need for a shock rebuild.

Customization and Optimization for Better Performance

To get the most out of your TTX22M Trunnion rear shock, consider the following optimizations:

1. Adjust the damping to your riding style: Tailor the rebound and compression settings to suit your terrain. For aggressive riding or downhill trails, increase the compression damping for added support. On smoother trails, reduce the compression to enhance comfort.
2. Fine-tune the air spring: If you’re using the air spring version, adjusting the air pressure can have a significant impact on the ride. Lower pressures typically provide better comfort, while higher pressures offer more support for heavier riders.
3. Upgrade components: Consider pairing the TTX22M with compatible high-performance components, such as Öhlins’ own forks or wheels, to achieve a perfectly balanced ride.

Comparison with Similar Models

While the TTX22M Trunnion is a top-tier rear shock, it’s important to understand how it compares to other models in the market. Compared to other high-end shocks, such as the Fox X2 or RockShox Super Deluxe, the TTX22M stands out for its:

• Durability: The Öhlins TTX22M is built with precision and high-quality materials, making it more reliable and durable in the long term.
• Customizability: It offers a high degree of adjustability, allowing riders to fine-tune the shock to their specific needs with more granularity than some other models.
• Performance: The TTX22M provides exceptional stability and support, especially for aggressive riders who demand a shock that can handle rough terrain with ease.

However, riders who prioritize lighter weight may prefer a model like the RockShox Super Deluxe, which may offer slightly lower weight without sacrificing too much in performance.

Compatibility with Other Drivetrain Components

The TTX22M Trunnion rear shock is compatible with a wide range of modern bike frames. However, it’s important to ensure that your frame uses a trunnion mount, as this is essential for proper installation. Additionally, the shock’s performance can be optimized when paired with other high-performance Öhlins components like the RXF 36 fork or Öhlins wheels. Always check compatibility between your frame and shock before purchasing to ensure a seamless fit.

By following these maintenance and adjustment guidelines, you can ensure that your TTX22M Trunnion rear shock remains in peak [paid link] condition, providing you with exceptional performance and ride quality. Regular maintenance, proper installation, and adjustments based on your needs will prolong the lifespan of the shock and enhance your riding experience.