Air Shocks

Air shocks combine shock absorber damping with pneumatic support to help control suspension movement while providing an adjustable element within the suspension system. Depending on the application, air pressure can be adjusted to help accommodate changing loads and maintain the intended ride height.

They are different from conventional shock absorbers because they incorporate an air-assisted function in addition to controlling suspension movement.

Air shocks are also different from standalone airbags or air springs, making it important to identify exactly which type of air suspension component your vehicle requires before ordering a replacement.

What Are Air Shocks?

An air shock, or air shock absorber, is a suspension component that combines shock absorber functionality with an air-assisted chamber.

A conventional shock absorber primarily controls the movement of the suspension by damping compression and rebound. An air shock also performs a damping function but incorporates pneumatic assistance.

Depending on the suspension design, air pressure may be supplied manually or as part of a broader air suspension system.

The exact function varies between applications, but air shocks may be used to:

• Control suspension movement as the wheels travel over changing road surfaces.
• Provide additional suspension support through adjustable air pressure.
• Help maintain ride height when vehicle load changes.
• Support load levelling where the suspension system is designed for this purpose.
• Work with other air suspension components as part of an integrated system.

Not every air shock provides the same functionality, pressure range or level of adjustment. Always check the specifications for the particular application.

How Do Air Shocks Work?

Like other shock absorbers, air shocks help control the rate at which the suspension compresses and rebounds.

Without effective damping, the springs can continue oscillating after the vehicle encounters a bump or road irregularity. Shock absorbers control this movement to help keep suspension behaviour more stable and predictable.

Air shocks add pneumatic support to this process.

Compressed air within the air-assisted portion of the shock can provide additional support. Depending on the design, adjusting the air pressure can alter how much support is provided.

This can be particularly useful where vehicle load varies.

For example, adding cargo or towing equipment can increase the load carried by the suspension. Where an air shock system is designed for load support, adjusting the air pressure can help the suspension accommodate that change and maintain an appropriate ride height.

Air pressure should always remain within the specifications established for the particular air shock and application.

Air Shocks vs Regular Shock Absorbers

Air shocks and conventional shock absorbers both perform a damping function, but they are not identical.

A regular shock absorber controls suspension compression and rebound. It works with the vehicle's springs rather than providing adjustable pneumatic support itself.

An air shock combines damping with an air-assisted function.

The main differences can include:

• Air adjustment: Air shocks can use adjustable air pressure, depending on their design.
• Load support: Some air shocks can provide additional support when vehicle load increases.
• Ride-height support: Appropriate air pressure can help maintain the intended ride height in systems designed for load levelling.
• Additional components: Air shocks may require air lines, fittings or other pneumatic components.
• Maintenance requirements: The pneumatic portion of the system introduces additional areas that may need inspection for leaks or damage.

This doesn't mean an air shock is automatically better than a conventional shock absorber. The correct choice depends on the suspension design and intended application.

Air Shocks vs Airbags & Air Springs

The terminology surrounding air suspension can become confusing because air shocks, airbags and air springs all use compressed air, but they don't necessarily perform the same job.

Air Shocks

Air shocks combine shock absorber damping and pneumatic support within the component.

They help control suspension movement while also using air pressure to provide an additional suspension function.

Airbags & Air Springs

An airbag or air spring primarily acts as a spring or supplementary load-support component.

Depending on the system, it may replace a conventional spring or work alongside the existing suspension to provide additional support.

The shock absorber may remain a separate component responsible for damping suspension movement.

This distinction matters when shopping for air suspension parts. Replacing an airbag when the vehicle requires an air shock, or vice versa, will not address the same component or function.

Fulcrum categorises air shocks, airbags and other air suspension components separately, making it easier to narrow the search to the type of component required.

Benefits of Air Adjustable Shocks

Where specified for the vehicle and application, adjustable air shocks can provide flexibility when operating conditions change.

Potential benefits can include:

• Additional load support when carrying changing loads.
• Ride-height support to help compensate for additional weight.
• Adjustability through changes in air pressure.
• Integrated damping and air assistance within one suspension component.
• Greater flexibility for vehicles that regularly experience different loading conditions.

However, air shocks don't increase the vehicle's legal payload or towing capacity.

Vehicle load limits are determined by the manufacturer and other relevant ratings. Air suspension components can help the suspension manage an appropriate load, but they don't change the vehicle's specified maximum carrying capacity.

Signs Your Air Shocks Need Attention

Air shocks contain both damping and pneumatic elements, which means problems can develop in different parts of the component.

Possible signs that an air shock or related air suspension system requires inspection include:

• Loss of ride height: One end or corner of the vehicle may sit lower than expected.
• Difficulty maintaining air pressure: Pressure that repeatedly drops may indicate a leak within the system.
• Excessive bouncing: Reduced damping performance may allow the suspension to continue moving after a bump.
• Changes in ride quality: The vehicle may feel less controlled than usual.
• Visible damage: Cracks, deterioration or damage around the air-assisted portion of the component should be investigated.
• Air leaks: Leaks may occur at the shock, air lines, fittings or elsewhere within the pneumatic system.

These symptoms don't automatically confirm that the air shock itself has failed.

Air lines, fittings, valves, compressors, electronic controls and other suspension components can produce similar symptoms. Diagnosing the complete system helps avoid replacing the wrong part.

Choosing Replacement Air Shocks

Air shocks are application-specific suspension components, so correct fitment is essential.

Before choosing a replacement, consider:

• Vehicle and suspension compatibility
• Front or rear fitting position
• Existing air suspension configuration
• Air line and fitting requirements
• Operating pressure specifications
• Whether additional air suspension components require attention
• How the vehicle is normally loaded or used

Avoid selecting an air shock based purely on physical dimensions or appearance. Even apparently similar components may differ in mounting configuration, operating pressure, damping characteristics and intended suspension function.

If you're replacing air shocks because the vehicle is losing height or air pressure, inspect the complete pneumatic system before ordering parts. The actual problem may be elsewhere in the air suspension system.

Air Shock Installation & Maintenance

Correct installation is particularly important because air shocks involve both suspension mounting points and pneumatic connections.

After installation, check that:

• Air lines are correctly connected and routed.
• Fittings are secure and free from leaks.
• Air lines are kept away from heat, sharp edges and moving components.
• The system maintains the specified pressure.
• The suspension moves freely throughout its intended travel.
• Air pressure remains within the manufacturer's specified operating range.

Periodic inspection can also help identify damaged air lines, deteriorating fittings or leaks before they significantly affect suspension operation.

Never exceed the specified air pressure or vehicle load limits in an attempt to compensate for excessive weight.

Get the Right Air Suspension Setup

Air suspension works as a system. If a vehicle is sitting low, losing pressure or no longer controlling suspension movement correctly, the air shock is only one possible source of the problem.

Checking the shocks, airbags or air springs, air lines, fittings and other relevant air suspension components together can help identify what actually requires attention.

This is particularly useful when the vehicle regularly carries changing loads or tows, where correct suspension setup matters just as much as replacing the individual component.

Buy from Fulcrum Suspensions

Fulcrum Suspensions specialises in suspension systems and can assist with component selection, system inspection and professional installation where required, helping ensure the air suspension is set up appropriately for the vehicle and its intended use.

If you're unsure which parts suit your vehicle or setup, Fulcrum's team can help you choose.