The Öhlins TTX2Air rear shock is designed for serious riders who demand the highest performance from their suspension system. Known for its precise adjustability, outstanding durability, and high-performance features, the TTX2Air is an excellent upgrade for those looking to optimize their bike’s rear suspension for aggressive trail riding, enduro racing, or cross-country riding. In this guide, we’ll go over the installation, maintenance, troubleshooting, customization, and compatibility of the TTX2Air rear shock to help you get the most out of this premium component.
Installation of the TTX2Air Rear Shock
Tools Required
- Torque wrench [paid link]
- 8mm and 10mm Allen wrenches [paid link]
- Shock pump
- 10mm spanner
- Cleaning supplies (rags, degreaser)
- New mounting hardware (if necessary)
Steps to Install the TTX2Air Rear Shock
- Remove the Existing Shock:
- Start by removing the rear wheel if necessary to provide better access.
- Use the 10mm spanner to unscrew the shock bolts at both ends. Make sure to keep track of the bolts and washers.
- Carefully remove the old shock and set it aside.
- Prepare the New TTX2Air Shock:
- Before installation, check that the TTX2Air shock is compatible with your bike’s frame, ensuring the eyelet length and stroke match.
- Lubricate the shock’s eyelets lightly with bike-specific grease to ensure smooth installation.
- Install the TTX2Air Rear Shock:
- Position the shock in the frame, aligning the mounting points with the bike’s shock mount holes.
- Insert the bolts through the shock’s eyelets and tighten them to the recommended torque specifications (usually between 10-15Nm). Check with the Öhlins manual for the exact torque values for your specific frame.
- Be sure to secure both ends of the shock properly to avoid any shifting during ride conditions.
- Set the Sag and Air Pressure:
- Use a shock pump to set the correct air pressure. Start by setting the recommended pressure for your weight and riding style.
- Check the sag by sitting on the bike in your normal riding position and measuring how much the shock compresses. Adjust the air pressure as needed to achieve 25-30% of the shock’s travel as sag.
- Fine-Tune the Settings:
- Adjust the rebound and compression damping settings based on your preferences and the terrain you plan to ride.
- Re-check the installation after a short test ride to ensure everything is secure and functioning properly.
Adjusting the TTX2Air Rear Shock
The TTX2Air is equipped with multiple adjustments to suit different riding styles and trail conditions. The main adjustments are:
Rebound Damping
Rebound damping controls how quickly the shock extends after compressing. For aggressive riding, you may want a faster rebound setting, while slower settings are better for smoother trails or to increase stability on rough terrain. Adjust the rebound knob located at the bottom of the shock, turning it clockwise for slower rebound and counterclockwise for faster.
Compression Damping
The TTX2Air features both high-speed and low-speed compression damping. High-speed compression affects how the shock reacts to fast, sudden impacts, such as hitting large rocks or drops, while low-speed compression controls the response to slower, more consistent bumps.
- Low-Speed Compression: Located at the top of the shock, adjust this dial to make the shock stiffer (clockwise) or softer (counterclockwise) for better performance on smoother trails or technical sections.
- High-Speed Compression: This is adjusted via a separate knob and controls the shock’s response to sudden impacts. Fine-tuning this allows for better control in aggressive riding scenarios.
Air Pressure
The air pressure in the TTX2Air shock significantly affects its performance. As mentioned earlier, adjust the pressure based on your weight and preferred sag level. Over- or under-inflating can lead to poor performance and excessive wear.
Maintaining Your TTX2Air Rear Shock
Proper maintenance is crucial to keeping your TTX2Air shock performing at its peak. Regular checks and servicing will help extend the lifespan of the shock and ensure it works efficiently.
Regular Cleaning
After each ride, clean the shock and its surrounding areas to remove dirt, grime, and debris. Use a clean rag and mild degreaser to wipe down the shock. Avoid using harsh chemicals or high-pressure water sprays directly on the shock.
Lubrication
Lubricate the shock’s eyelets and seals lightly to reduce wear and ensure smooth movement. Apply a small amount of suspension grease at regular intervals.
Service Intervals
Öhlins recommends a full service every 50 hours of riding or annually, whichever comes first. This service involves checking the internal seals, oil levels, and overall condition of the shock. If you notice any performance issues (such as excessive oil leakage or a decrease in damping performance), it’s essential to service the shock promptly.
Troubleshooting Common Issues
Issue 1: Lack of Rebound Control
If you notice that the rebound is too slow or too fast, start by adjusting the rebound knob to the correct setting. If the problem persists, it may indicate an issue with the internal damper or an oil leak, requiring professional servicing.
Issue 2: Loss of Air Pressure
If your shock is losing air pressure quickly, inspect the air valve for leaks and check the seals around the shock’s eyelets. Leaks could also stem from internal O-rings, which may need replacement. If you’re unable to find the leak, consider taking the shock to an authorized service center for inspection.
Issue 3: Excessive Compression
If the shock feels too firm or unresponsive to bumps, check the compression damping settings. Make sure the air pressure is correct and adjust both high-speed and low-speed compression settings. If this doesn’t solve the issue, a full rebuild of the shock may be necessary.
Customization and Optimization for Better Performance
Fine-Tuning Settings for Specific Riding Styles
The TTX2Air rear shock provides various settings that allow customization based on the rider’s specific needs:
- For Enduro and Aggressive Riding: Increase high-speed compression to handle rougher impacts while reducing low-speed compression for better handling over smoother sections.
- For Cross-Country Riding: Use lower compression damping to ensure better traction on rough climbs and fast descents, while keeping rebound fast for better control.
Adjusting for Different Terrain
- Rocky Terrain: Increase compression damping to prevent bottoming out on large hits.
- Smoother Trails: Lower compression damping for a more plush and comfortable ride.
Comparison with Similar Models
The TTX2Air rear shock stands out from other air shocks like the Fox Float X2 and RockShox Super Deluxe in several key ways. The Öhlins shock is renowned for its superior damping control and refined adjustability, providing a more consistent and precise ride on rough terrain. It also has a longer lifespan and lower maintenance requirements compared to competitors, making it an excellent investment for riders who want top-tier performance.
Understanding Compatibility with Other Drivetrain Components
When upgrading to the TTX2Air rear shock, it’s important to consider its compatibility with your bike’s frame, drivetrain, and overall geometry. While the TTX2Air is versatile and fits a wide range of bikes, some bike frames may require specific mounting hardware or shock adapters for optimal installation. Additionally, ensure that the shock’s eyelet length and stroke match your bike’s specifications.
If you are unsure about compatibility, consult with your local bike shop or the manufacturer’s website for detailed specifications. Ensuring proper compatibility will maximize the shock’s performance and longevity.