The TTXAir 2.1 rear shock by Öhlins is a premium suspension component designed for high-performance mountain biking. Whether you’re racing or hitting technical trails, this shock promises to provide exceptional comfort and control. This guide offers an in-depth look at the TTXAir 2.1, covering installation, adjustment, maintenance, troubleshooting, optimization, and compatibility with other drivetrain components.

Installation of the TTXAir 2.1 Rear Shock

Installing the TTXAir 2.1 rear shock is a straightforward process, but it requires attention to detail to ensure proper function and performance.

Step 1: Preparing the Bike

Before you begin, ensure the bike is stable. Place it on a repair stand or flip it upside down for better access to the rear shock area. Make sure to remove any tools or components that might obstruct the installation.

Step 2: Removing the Existing Shock

1. Locate the bolts that secure the current shock to the frame.
2. Use the appropriate tool to loosen and remove these bolts.
3. Carefully remove the shock from the frame.

Step 3: Installing the TTXAir 2.1

1. Align the TTXAir 2.1 with the frame mounting points.
2. Insert the shock’s eyelet into the frame’s upper mount, followed by the lower mount.
3. Secure both ends of the shock using the provided bolts. Ensure the bolts are torqued to the manufacturer’s specifications.
4. Tighten the bolts carefully, ensuring they are not over-torqued, which could damage the shock or the frame.

Step 4: Checking the Installation

Once the shock is mounted, check for any play or movement in the mounting points. Ensure the shock is securely in place and there is no interference with other components.

Adjustment of the TTXAir 2.1 Rear Shock

The TTXAir 2.1 offers multiple adjustment options to fine-tune your ride. Adjusting the shock settings correctly will enhance your bike’s handling and improve your riding experience.

Step 1: Setting the Air Pressure

1. The first adjustment to make is setting the air pressure. The TTXAir 2.1 comes with a high-precision air valve to adjust the spring rate.
2. Use a shock pump to increase or decrease the air pressure based on the rider’s weight and riding style. Start with the manufacturer’s recommended air pressure range and adjust from there.
3. A general starting point for air pressure is 150-170 PSI for riders weighing between 150-180 lbs. Adjust higher or lower depending on rider weight.

Step 2: Rebound Damping Adjustment

1. The rebound adjuster is located at the bottom of the shock body. This controls how quickly the shock returns after compression.
2. Turn the adjuster clockwise for slower rebound or counterclockwise for faster rebound. A slower rebound is suitable for rougher terrain, while a faster rebound helps with smoother trails.
3. Test the rebound setting by cycling the shock several times and adjusting to a comfortable feel.

Step 3: Compression Damping

The TTXAir 2.1 also features high-speed and low-speed compression damping adjustments. These adjustments affect how the shock absorbs impact during different riding scenarios.

1. Low-speed compression: Located on the shock body, this knob controls the shock’s response to slow, small impacts such as small bumps or braking forces.
   • Start with the knob in the middle position and adjust from there based on terrain.
   • Turning the knob clockwise increases compression, making the shock stiffer for more support.
2. High-speed compression: This setting adjusts the shock’s response to bigger impacts like drops and jumps.
   • Adjust the high-speed compression using the dedicated high-speed knob. Fine-tuning this setting can prevent bottoming out on aggressive descents.

Maintenance of the TTXAir 2.1 Rear Shock

Proper maintenance ensures the longevity and performance of the TTXAir 2.1 rear shock. Regular servicing is crucial, particularly after prolonged use or exposure to harsh conditions.

Step 1: Cleaning the Shock

1. After each ride, wipe down the shock with a damp cloth to remove dirt, mud, or grime.
2. Inspect the shock for any signs of wear or damage, paying particular attention to the seals.

Step 2: Checking Air Pressure and Damping

1. Periodically check the air pressure and damping settings to ensure they are within the recommended range.
2. If you notice any changes in performance, such as reduced rebound or poor compression, it may be time to service the shock.

Step 3: Servicing the Shock

1. Öhlins recommends a full service every 50-100 hours of riding. This includes disassembling the shock, cleaning all internal components, and replacing the seals and oil.
2. You can perform basic maintenance at home with a service kit, but for a full overhaul, it’s best to send the shock to an authorized Öhlins dealer.

Troubleshooting Common Issues

While the TTXAir 2.1 rear shock is designed for durability, occasional issues can arise. Here are some common problems and solutions.

Issue 1: Lack of Rebound Control

If the shock doesn’t rebound correctly or feels too slow:

• Check the rebound adjuster to ensure it is set correctly.
• Ensure there are no obstructions in the shock’s movement path.
• If the problem persists, the internal damper may need servicing.

Issue 2: Air Leaks

If you experience a loss of air pressure:

• Inspect the shock valve and seals for any damage.
• Replace any worn-out seals and re-check the air pressure.

Issue 3: Bottoming Out

If the shock bottoms out too frequently:

• Increase the air pressure to make the shock stiffer.
• Adjust the compression damping to higher settings for more control over bigger impacts.

Customization and Optimization

For riders looking to maximize their performance, customizing and fine-tuning the TTXAir 2.1 is key. Here are some ways to optimize the shock:

Adjusting for Terrain Type

1. For smoother terrain, reduce the air pressure and make the shock more responsive to minor bumps.
2. For rough, rocky trails, increase the air pressure and adjust the damping for a firmer, more controlled ride.

Tailoring for Rider Weight and Riding Style

1. Heavier riders may require a higher air pressure setting for better support.
2. Aggressive riders should focus on adjusting the high-speed compression to prevent the shock from bottoming out during jumps and drops.

Comparison with Similar Models

When considering the TTXAir 2.1, it’s essential to compare it with other shocks in the same category. Here’s how the TTXAir 2.1 stacks up against similar high-performance rear shocks:

TTXAir 2.1 vs. FOX FLOAT X2

• The TTXAir 2.1 offers a smoother, more consistent feel over long rides, thanks to Öhlins’ Twin Tube technology.
• The FOX FLOAT X2 is known for its lighter weight, making it a good option for racers, but the TTXAir 2.1 provides superior damping performance, especially on rough terrain.

TTXAir 2.1 vs. RockShox Super Deluxe Ultimate

• Both the TTXAir 2.1 and the RockShox Super Deluxe Ultimate are well-regarded for their adjustability. However, the Öhlins shock is typically favored for its refined feel and durability over extended use.

Compatibility with Other Drivetrain Components

The TTXAir 2.1 rear shock is compatible with a wide range of mountain bike frames that support metric shock sizes. However, it’s important to ensure compatibility with your bike’s specific geometry and suspension design.

1. Frame Compatibility: Ensure your frame supports the shock’s eyelet and mounting style. The TTXAir 2.1 is compatible with both trunnion and traditional eyelet mountings.
2. Suspension Design: The TTXAir 2.1 is optimized for use with modern progressive suspension designs but can also be used with more traditional setups with slight adjustments.

By checking compatibility and ensuring proper setup, you can achieve the best possible performance from the TTXAir 2.1 rear shock.