The STX22 Air from Öhlins is a high-performance rear shock that offers exceptional comfort and control on the trail. As a rider, learning how to properly install, adjust, maintain, and troubleshoot your STX22 Air shock can significantly enhance your riding experience. In this guide, we will walk you through every step of the process, ensuring you can extract the best performance and longevity from your shock. Whether you’re looking to optimize for a smoother ride or need to fine-tune your shock to handle specific trail conditions, this article will provide the expertise you need.

Installation of the STX22 Air

Installing the Öhlins STX22 Air rear shock requires attention to detail and the right tools to ensure that it functions as intended. Here’s how to properly install the shock on your bike:

1. Prepare the Bike: Place your bike on a stable work stand to avoid any instability during installation. Remove the existing rear shock if one is already installed.
2. Check Compatibility: Ensure that the STX22 Air shock is compatible with your bike’s frame. The shock length and eyelet diameter should match your bike’s specifications to avoid fitment issues.
3. Lubricate the Mounting Hardware: Apply a thin layer of grease to the mounting bolts and eyelet bushings to prevent creaking and corrosion. This step will also make future disassembly easier.
4. Attach the Shock: Begin by aligning the shock’s eyelet with the bike frame’s rear shock mounting points. Slide the shock into position and secure it with the mounting bolts. Ensure that the shock is centered and aligned properly, then tighten the bolts to the manufacturer’s recommended torque specifications.
5. Recheck for Proper Fit: After installation, visually inspect the shock to ensure it is seated correctly. It should not be tilted or improperly angled.
6. Check for Clearance: Ensure that the rear shock doesn’t interfere with other components, such as the frame, chainstay, or swingarm, especially during full suspension compression.

Adjusting the STX22 Air Rear Shock

The STX22 Air shock comes with a wide range of adjustment options that allow you to dial in the performance to your specific preferences and riding style. The key adjustments to focus on are air pressure, rebound, and compression. Here’s how to make these adjustments:

Air Pressure

Air pressure plays a vital role in determining the ride height and suspension firmness. It is one of the most crucial adjustments you can make.

1. Set Your Sag: Start by setting your air pressure according to your rider weight. The STX22 Air uses a recommended sag of about 25-30%. To find the correct air pressure, use a shock pump and adjust the pressure until the suspension sags appropriately when you are in your riding position.
2. Fine-tune: Test ride your bike, and if necessary, increase or decrease the air pressure until you find the ideal balance between comfort and control.

Rebound Adjustment

Rebound damping controls how quickly the shock returns after compression. Proper rebound is essential for maintaining control on uneven terrain.

1. Initial Adjustment: Start by turning the rebound dial fully clockwise (slow). Then, ride your bike on a trail and slowly adjust the rebound to your liking by turning the dial counterclockwise (faster) until you achieve a smooth and controlled rebound.
2. Test for Optimal Performance: Too fast of a rebound may result in the shock “bucking” or becoming unsettled, while too slow of a rebound can make the shock feel sluggish. Fine-tune this setting until the shock returns to its original position smoothly without feeling too quick or too slow.

Compression Adjustment

Compression damping controls how the shock behaves during impacts and pedaling. It helps prevent bottoming out and ensures a more stable ride.

1. Open vs. Closed Compression: The STX22 Air shock has an external compression adjustment. Set it to a lighter setting for rough trails (open) or a firmer setting for smoother, more controlled riding (closed).
2. Fine-tuning: Start with the compression setting in the middle range. During test rides, adjust the compression dial to suit your preference for handling bigger hits and maintaining stability through rough sections.

Maintenance of the STX22 Air Rear Shock

To keep the Öhlins STX22 Air performing at its best, regular maintenance is essential. Here’s a guide to maintaining your rear shock:

Clean the Shock Regularly

After every ride, wipe down the shock with a clean, damp cloth to remove dirt, mud, and debris. Make sure to clean the shock’s eyelets, the air valve, and the stanchion to prevent contaminants from entering the internal components.

Inspect the Shock for Wear

Check the shock for signs of wear such as oil leakage, visible damage to the stanchion, or misalignment. If you notice any issues, it’s best to contact an authorized service center for repairs.

Refill the Air Chamber

Over time, the air pressure in your shock may decrease, especially after extended use. Regularly check the air pressure and top it off using a shock pump to maintain optimal performance.

Annual Service

Öhlins recommends servicing the STX22 Air annually, or after every 50-100 hours of riding, depending on the intensity of your riding. This service includes disassembling, cleaning, lubricating, and replacing any worn components inside the shock.

Troubleshooting Common Setup Issues

Even with a high-quality shock like the STX22 Air, problems can arise during setup or use. Below are some common issues and their solutions:

Excessive Bottoming Out

• Cause: This is usually caused by too little air pressure or too much compression damping.
• Solution: Increase the air pressure to achieve proper sag, or adjust the compression damping to a firmer setting.

Bouncy or Unstable Ride

• Cause: This may result from insufficient rebound damping or incorrect air pressure.
• Solution: Increase the rebound damping slightly or adjust the air pressure to match your weight and riding style.

Shock Sticking or Creaking

• Cause: This can occur if the shock’s mounting hardware is improperly lubricated or if there is dirt accumulation around the shock eyelets.
• Solution: Re-lubricate the mounting bolts and ensure the shock is properly cleaned and maintained.

Customizing the STX22 Air for Performance

The STX22 Air shock offers a range of customization options to suit various riding conditions and rider preferences. If you want to optimize the shock’s performance further, consider the following:

Adjusting for Trail Conditions

• For Climbing: Set the compression to a firmer setting to improve pedaling efficiency.
• For Descending: Open the compression to allow the shock to absorb impacts more effectively, providing a smoother, more controlled descent.

Rider Weight and Riding Style

• Heavier Riders: If you’re a heavier rider, increase the air pressure slightly to prevent bottoming out and to maintain a proper sag.
• Aggressive Riders: If you often ride aggressively or on rough terrain, increase the rebound and compression damping to maintain better control.

Comparison with Similar Models

While the Öhlins STX22 Air is a top-tier rear shock, it’s important to compare it with other models to determine which one fits your needs best.

Vs. Fox Float X2

• Weight: The Fox Float X2 is slightly heavier, but it offers a wider range of adjustments for fine-tuning.
• Performance: The STX22 Air offers a more responsive and controlled feel, while the Float X2 excels in providing a plush ride over rough terrain.

Vs. RockShox Super Deluxe

• Price: The RockShox Super Deluxe is more affordable but may lack the precision and fine-tuning options of the STX22 Air.
• Ride Quality: The STX22 Air stands out for its superior shock absorption and smoothness, especially on aggressive descents.

Compatibility with Other Drivetrain Components

The Öhlins STX22 Air rear shock is designed to work seamlessly with most modern bike frames and drivetrains. However, compatibility depends on your bike’s specific geometry, suspension layout, and the overall weight distribution of your bike. Always check the specifications of your frame before installation to ensure proper fitment. Additionally, pairing the STX22 Air with high-quality components like a matching fork or high-end drivetrain can further enhance your bike’s performance.