The Öhlins TTXAir 2.1 rear shock is a premium option for riders looking to enhance their bike’s performance and comfort. Known for its high-end build quality, advanced features, and exceptional tuning capabilities, the TTXAir 2.1 provides a unique combination of air-sprung efficiency and damper technology. This rear shock is designed for serious cyclists who demand precision and reliability in a wide range of riding conditions.
Key Features of the TTXAir 2.1 Rear Shock
Advanced Twin-Tube Technology
One of the standout features of the Öhlins TTXAir 2.1 rear shock is its twin-tube damping system. This design separates the compression and rebound circuits into different chambers, which improves fluid dynamics and provides smoother performance. This advanced technology allows for more precise control over the shock’s response, making it perfect for both aggressive descents and technical climbs.
Lightweight Air-Sprung Design
The TTXAir 2.1 uses an air spring system, which significantly reduces the weight compared to traditional coil shocks. The reduced weight helps improve the bike’s overall handling and responsiveness, especially on long rides or during technical sections. Despite being air-sprung, the TTXAir 2.1 offers a plush, responsive feel, making it suitable for a variety of terrain types.
Comprehensive Adjustment Options
Öhlins has designed the TTXAir 2.1 with a wide range of adjustment options, giving riders full control over their suspension setup. These adjustments include:
- Rebound: Adjust the speed at which the shock returns to its original position after compression.
- Compression: Fine-tune the shock’s resistance to compression, allowing for better support on rough terrain.
- Volume Spacers: Customize the air spring’s progression to match the rider’s weight and riding style.
These adjustments ensure that the shock can be dialed in to meet the specific needs of the rider, whether they are tackling downhill tracks or enduring long endurance rides.
Installation and Setup
Tools Required
- 8mm Allen wrench [paid link]
- Torque wrench [paid link]
- Shock pump
- 5mm Allen wrench [paid link]
- T25 Torx driver
Installation Steps
- Remove the Old Shock: Begin by removing the existing shock from your bike frame. Use the appropriate size Allen wrench or Torx driver to unscrew the mounting bolts at both the top and bottom of the shock.
- Prepare the New Shock: Before installation, set the TTXAir 2.1 to the recommended starting pressure for your weight. Use a shock pump to add air to the air spring.
- Mount the Shock: Align the shock’s mounting hardware with the frame’s shock mounts. Secure the shock in place by tightening the bolts using the correct torque specifications provided by Öhlins.
- Set the Sag: Set the shock’s sag by adjusting the air pressure. Typically, you want 25-30% of the shock’s total travel to be used by the rider’s body weight.
- Final Adjustments: Fine-tune the rebound and compression settings to suit your riding style. Start with the recommended baseline settings, then make incremental adjustments based on your preferences and terrain.
Maintenance and Tuning
The Öhlins TTXAir 2.1 is designed to be low-maintenance but requires some periodic attention to maintain peak performance.
Regular Checks and Service Intervals
- Check the Air Pressure: Before each ride, check the air pressure to ensure it matches the recommended settings for your weight and riding style. An incorrect air pressure level can negatively impact performance.
- Inspect for Leaks: Periodically check the shock’s seals and the air sleeve for any signs of leaks. If you notice a drop in air pressure, the shock may need to be serviced.
- Clean the Shock: After each ride, clean the shock with mild soap and water to remove dirt and grime. Avoid using harsh chemicals, as they can damage the shock’s seals and anodized parts.
Advanced Tuning
- Adjust Rebound and Compression: After testing the shock on different terrain, adjust the rebound and compression settings. A stiffer compression setting is ideal for aggressive riding, while a softer setting can provide better traction on technical terrain.
- Change Volume Spacers: For riders who want to fine-tune the shock’s progression, adjusting the volume spacers in the air spring can help. Adding spacers reduces the amount of bottom-out resistance, while removing spacers can make the shock feel more linear throughout its stroke.
Troubleshooting Common Issues
Loss of Air Pressure
If you notice that the shock is losing air pressure over time, it could be due to a leak in the air spring or shock seals. Ensure that the air valve is securely tightened and inspect the shock for any visible signs of damage. If the issue persists, it may be time for a seal replacement or a complete rebuild by an authorized Öhlins service center.
Poor Rebound or Compression Performance
If the shock feels sluggish or unresponsive, it may be due to improper adjustment or a buildup of dirt in the damping circuit. Check that the rebound and compression settings are correctly set according to your preferences. If these adjustments don’t resolve the issue, it may be necessary to disassemble and clean the shock or have it serviced by a professional.
No Sag Adjustment
If you are unable to achieve the correct sag, check the air pressure and make sure it is within the recommended range for your weight. Additionally, ensure that the shock’s mounting hardware is secure and that there is no binding in the shock’s travel.
Customization and Optimization
The Öhlins TTXAir 2.1 offers several options for customization, allowing riders to tailor the shock’s performance to their exact needs.
Volume Spacers
Changing the number of volume spacers in the TTXAir 2.1 can help adjust how the shock behaves under load. Fewer spacers allow for a more progressive feel, while more spacers provide a more linear feel. Riders can experiment with different configurations to find the setup that best suits their riding style.
Tuning for Different Terrains
For riders who frequently ride on technical terrain, the compression settings can be adjusted to allow for more sensitive shock action, improving traction. On smoother, faster trails, stiffer compression settings can be used to maintain stability at higher speeds.
Tuning for Weight
The TTXAir 2.1 is highly tunable, which makes it suitable for riders of all weights. Riders should experiment with air pressure and volume spacers to find the optimal setup for their body weight. Using the right settings ensures the best balance between comfort and performance.
Comparison with Similar Models
When compared to other high-end rear shocks like the Fox Float X2 or RockShox Super Deluxe, the Öhlins TTXAir 2.1 stands out with its advanced twin-tube damper technology. This provides a more controlled, consistent feel over long rides and rough descents. While the Fox Float X2 offers similar adjustability, the TTXAir 2.1 is often praised for its smoother, more refined ride quality, especially in technical terrain.
Compatibility with Other Drivetrain Components
The TTXAir 2.1 is compatible with most modern mountain bike frames, provided they use a standard shock mount system. Its air-sprung design allows for greater versatility, making it an ideal choice for riders looking to upgrade their suspension without compromising the bike’s weight.
The shock’s design also ensures that it pairs well with a variety of drivetrain components, allowing for seamless integration with other high-end parts. However, it is crucial to verify the frame’s specific shock specifications before purchasing to ensure compatibility.
By choosing the TTXAir 2.1 rear shock, riders invest in a high-performance, adjustable, and lightweight suspension system that can be fine-tuned to meet any riding condition. Its advanced damping technology and smooth, reliable performance make it a top choice for serious cyclists.