The STX22 Air rear shock from Öhlins has garnered significant attention in the mountain biking community for its advanced design, exceptional performance, and versatile customization options. As one of the leading models in Öhlins’ lineup, it provides a high level of performance and adjustability, making it a strong contender for riders looking to upgrade their bike’s suspension system. This article will compare the STX22 Air rear shock to similar models from other brands, providing a comprehensive guide on its installation, adjustment, maintenance, and troubleshooting, as well as highlighting how it stands out in the competitive landscape.

Overview of the STX22 Air Rear Shock

The STX22 Air is an air-sprung rear shock designed to offer optimal performance for cross-country, enduro, and trail riders. It features Öhlins’ patented TTX2 Air technology, which combines a twin-tube damper system with an air spring for an efficient and responsive ride. Riders benefit from the shock’s lightweight design, reliable performance across various trail conditions, and excellent tuning capabilities. The STX22 Air is built with a focus on smooth, consistent damping and long-term durability.

Installation and Setup of the STX22 Air Rear Shock

Tools Required:

• 5mm Allen key
• Torque wrench [paid link]
• 10mm wrench
• Shock pump
• Suspension grease

Step-by-Step Installation:

1. Remove the Old Shock: Begin by carefully removing your existing rear shock using a 5mm Allen key. Ensure you remove any spacers or bushings that might be attached to the shock.
2. Prepare the Mounting Points: Clean the mounting points on the frame thoroughly and apply a small amount of suspension grease to prevent seizing and ensure smooth installation.
3. Install the STX22 Air Shock: Position the STX22 Air shock in the frame mounts, ensuring the correct alignment. Tighten the upper and lower mounting bolts using a 5mm Allen key and a torque wrench [paid link] to the manufacturer’s recommended torque settings (usually between 6-10 Nm, depending on the frame).
4. Set the Sag: Use a shock pump to adjust the air pressure to the correct level for your rider weight. Typically, this is about 25-30% of the shock’s total travel. Refer to the STX22 Air’s manual for the recommended air pressure settings based on your weight.
5. Test for Smoothness: Once installed, press the shock through its travel to ensure there is no binding or obstruction. Check that the shock compresses and rebounds smoothly.

Adjustments and Customization of the STX22 Air Rear Shock

The STX22 Air rear shock offers several adjustment points, allowing for fine-tuning to match individual rider preferences and trail conditions. The key adjustments include:

1. Rebound Damping:

The rebound knob on the STX22 Air allows for quick adjustment of how fast the shock returns after compression. To adjust:

• Turn the knob clockwise to slow down the rebound (more control on fast terrain).
• Turn the knob counterclockwise to speed up the rebound (ideal for slower, technical sections).

2. Compression Damping:

The STX22 Air features low-speed and high-speed compression damping adjustments. These adjustments help fine-tune how the shock responds to small and large hits.

• Low-speed compression: Adjusts the damping for slow, constant impacts like pedaling forces or minor trail irregularities.
• High-speed compression: Controls how the shock handles fast impacts, such as drops or rough terrain.

3. Air Spring Pressure:

The STX22 Air is air-sprung, and adjusting the air pressure allows you to customize the shock’s overall feel. Lowering air pressure will soften the shock, providing more sensitivity and comfort, while increasing pressure adds support for heavier riders or aggressive riding styles.

4. Volume Spacers:

To fine-tune bottom-out resistance and progression, volume spacers can be added or removed. Adding spacers increases progression, making the shock feel more firm towards the end of its travel, while removing spacers can make the shock feel more linear.

Maintenance and Troubleshooting

Maintaining the STX22 Air shock is critical for ensuring its long-term performance. Regular care will keep it running smoothly across all types of terrain.

Maintenance Tips:

• Clean the Shock: Regularly wipe down the shock body to remove dirt and grime. Dirt accumulation can lead to wear and tear on seals.
• Check for Leaks: Periodically inspect the air spring and damper for signs of oil or air leaks. Leaking seals or valves should be replaced promptly.
• Lubricate the Shock: Apply suspension grease to the shock’s mounting points to maintain smooth operation and prevent creaking or seizing.
• Air Pressure Check: Ensure air pressure is checked regularly, especially before rides, to maintain the correct sag and performance.

Troubleshooting Common Issues:

• Excessive Rebound Speed: If the rebound is too fast, the shock may not be set to the appropriate pressure for the rider’s weight. Adjust the air pressure or increase rebound damping for better control.
• Poor Performance on Small Bumps: If the shock feels harsh or unresponsive on small impacts, consider adjusting the low-speed compression damping or reducing air pressure.
• Sinking or Bottoming Out: If the shock bottoms out too easily, add a volume spacer to increase the progression or increase air pressure for more support.

STX22 Air vs. Competing Rear Shocks

When comparing the STX22 Air rear shock to other models on the market, several features stand out that may make it a better choice for certain riders. Here’s how it stacks up against some popular models from brands like Fox, RockShox, and Cane Creek.

Öhlins STX22 Air vs. Fox Float X2

• Performance: Both shocks are known for their excellent small bump sensitivity and strong support. However, the STX22 Air’s TTX2 Air damper provides a smoother, more consistent feel over a wider range of conditions, whereas the Fox Float X2 may feel slightly more active in certain high-speed situations.
• Adjustability: Both models offer extensive adjustability, but the STX22 Air’s simpler control layout is often easier to fine-tune, while the Fox Float X2 offers more granularity in compression adjustments.
• Weight: The STX22 Air is lighter than the Fox Float X2, making it an excellent option for riders prioritizing weight savings.

STX22 Air vs. RockShox Super Deluxe Ultimate

• Performance: The STX22 Air tends to offer a more linear progression, while the RockShox Super Deluxe Ultimate is known for its progressive damping curve that suits aggressive riders.
• Durability: Both shocks are incredibly durable, but Öhlins has a reputation for superior longevity, especially under extreme conditions, making it a preferred choice for enduro and all-mountain riders.

STX22 Air vs. Cane Creek Double Barrel Air

• Handling: While the Cane Creek Double Barrel Air has a more complex adjustment system with separate high and low-speed compression and rebound controls, the STX22 Air provides a more straightforward experience without compromising performance. This makes the STX22 Air a better choice for riders who value simplicity in their setup.
• Weight: The STX22 Air is generally lighter than the Cane Creek Double Barrel Air, which may be a consideration for cross-country or trail riders looking to reduce bike weight.

Conclusion

The Öhlins STX22 Air rear shock is an exceptional choice for riders seeking performance, reliability, and customization. Its combination of smooth damping, adjustable settings, and lightweight design make it a top contender in the market. When compared to competitors such as the Fox Float X2, RockShox Super Deluxe Ultimate, and Cane Creek Double Barrel Air, the STX22 Air stands out for its consistent performance, ease of use, and long-term durability. For riders looking to upgrade their suspension system, the STX22 Air offers an excellent balance of comfort, control, and responsiveness.