Öhlins’ STX22 Air rear shocks are designed to elevate a rider’s performance by providing superior suspension for road bikes. This shock offers an advanced air spring and damping system, making it a popular choice for serious cyclists who demand precision handling and comfort. This guide delves into the installation, adjustment, maintenance, troubleshooting, and optimization of the STX22 Air rear shock, while also comparing it with other similar models in the market.

Installation of the STX22 Air Rear Shock

The STX22 Air rear shock installation is relatively straightforward, but it requires attention to detail for optimal performance.

Step-by-Step Installation Process

1. Prepare the Bike Frame: Ensure the bike frame is clean and free of debris. Inspect the rear shock mount to ensure it is in good condition.
2. Remove the Existing Shock: If you are replacing an old shock, first remove it by unscrewing the mounting bolts on both ends of the shock.
3. Align the STX22 Air Shock: Position the STX22 Air shock in the rear shock mount. Ensure the eyelet and the mounting hardware fit perfectly.
4. Secure the Shock: Tighten the bolts to the recommended torque value specified by the manufacturer. Do not overtighten as this can damage the frame or shock.
5. Check Shock Alignment: Ensure the shock is aligned properly and moves smoothly when the suspension is compressed.
6. Recheck Mounting: After installation, recheck the bolts and alignment to ensure that everything is secure.

Adjusting the STX22 Air Rear Shock

Proper shock adjustment is essential to achieve optimal ride quality. The STX22 Air features multiple adjustments that allow riders to fine-tune the suspension for different terrain and riding styles.

Key Adjustment Features

• Rebound Damping: The rebound adjuster on the STX22 allows you to control the speed at which the shock returns after compression. A faster rebound is ideal for smooth trails, while slower rebound is better suited for rougher terrain.
• Compression Damping: The shock features a low-speed compression adjustment that helps you fine-tune the shock’s responsiveness. Higher compression is perfect for more aggressive riders or technical trails, while a softer setting is ideal for comfort on long rides.
• Air Pressure: The air pressure in the shock needs to be set based on the rider’s weight. Adjusting air pressure allows you to control the overall stiffness of the shock. Use a shock pump to make fine adjustments.

It is important to test the shock after adjustments and make incremental changes to find the right balance between comfort and performance.

Maintaining the STX22 Air Rear Shock

Maintaining your STX22 Air rear shock is vital for keeping it performing at its best. Regular maintenance helps to extend the life of the shock and ensures it continues to provide optimal performance.

Routine Maintenance

• Inspect for Leaks: Check the air spring and damper seals regularly for any signs of leakage. If you notice any oil or air leaks, the shock may need to be serviced.
• Clean the Shock: After every ride, clean the shock with a damp cloth to remove dirt and debris. Avoid using abrasive materials that could damage the shock’s surface.
• Lubricate the Shock: Use light lubricant on the shock’s moving parts, such as the shaft and mounting hardware, to prevent wear and tear.
• Check for Damaged Seals: Inspect the seals every few months to ensure they are intact and functioning properly. Replacing worn seals will prevent dirt and moisture from entering the shock internals.

Annual Service

It is recommended to have the STX22 Air rear shock serviced annually by a professional technician to check the internal components, including the damper fluid and air spring. This helps maintain the shock’s performance and ensure longevity.

Troubleshooting Common Issues

While the STX22 Air rear shock is highly reliable, occasional issues may arise. Below are some common problems and solutions.

Common Issues and Solutions

• Loss of Air Pressure: If the shock feels excessively soft or saggy, it may have lost air pressure. Check the air pressure and adjust it to the appropriate level. If the problem persists, inspect the shock for leaks, particularly around the valve and seals.
• Excessive Rebound Speed: If the rebound is too fast, it may cause a bouncy ride. Adjust the rebound damping by turning the dial to a slower setting.
• Noise During Compression: If you hear a clicking or popping sound when compressing the shock, it may indicate an issue with the damper or air spring. Perform a thorough inspection of the shock’s internals and seals. If necessary, have the shock serviced by a professional.
• Stiff Shock Movement: If the shock feels stiff and unresponsive, check the compression damping settings. If the settings are correct and the problem persists, it may be due to internal damage or worn seals.

Customization and Optimization for Better Performance

The STX22 Air rear shock is designed for riders who want to fine-tune their suspension system. By making several adjustments, you can tailor the shock to suit different riding styles and conditions.

Optimizing for Trail and XC Riding

• For Trail Riding: Increase air pressure slightly to prevent bottoming out and adjust the rebound to be moderately fast for a responsive feel.
• For Cross-Country (XC) Riding: Use a slightly lower air pressure to enhance comfort over long distances. Set the rebound slower to control fast compression on rough terrain.

Fine-Tuning for Enduro or Downhill

• For Enduro or Downhill Riding: Increase compression damping for added support during aggressive descents. Keep the air pressure slightly higher to handle the increased forces during high-impact situations.

Comparison with Similar Models

When considering a rear shock like the STX22 Air, it’s helpful to compare it to other similar models in the market. Here’s a quick comparison with other popular options.

STX22 Air vs. Fox Float X2

• Performance: Both shocks are high-performance models, but the Fox Float X2 is generally more suitable for aggressive riders who need additional support for rough terrain.
• Adjustments: The STX22 Air features essential adjustments like rebound, compression, and air pressure, which are similar to those found in the Fox Float X2. However, the Fox Float X2 has additional high-speed compression adjustments, making it more versatile for a wider range of terrains.
• Weight: The STX22 Air is slightly lighter than the Fox Float X2, which can be an advantage for riders prioritizing weight savings.

STX22 Air vs. RockShox Super Deluxe Ultimate

• Ride Quality: The STX22 Air offers a smooth, consistent ride, while the RockShox Super Deluxe Ultimate is better suited for heavier riders or those looking for more damping support.
• Durability: Both shocks are durable, but the STX22 Air’s simplicity makes it a bit easier to maintain in the long run.

Understanding Compatibility with Other Drivetrain Components

The STX22 Air rear shock is compatible with a wide range of road bike frames and drivetrain components. However, ensuring proper compatibility with the bike’s geometry and other components is essential for maximizing performance.

Compatibility Considerations

• Frame Geometry: The STX22 Air is designed to fit most modern road bike frames, but you should always check your frame’s specifications to ensure compatibility.
• Drivetrain Integration: Although the rear shock is independent of the drivetrain, it is crucial to ensure that the suspension works harmoniously with the bike’s overall setup. This includes ensuring that the shock’s stroke length and mount type are compatible with your bike’s design.

When installing the STX22 Air rear shock, it’s important to double-check your bike’s frame specifications to confirm that the shock will work seamlessly with your drivetrain components and frame geometry.