Vehicle Fitment

Compatible with:

• 2005 Subaru WRX STI
• 2006 Subaru WRX STI
• 2007 Subaru WRX STI

Always verify compatibility if your vehicle has aftermarket suspension modifications or converted suspension components.

What’s Included?

The kit includes:

Front

• Two 50mm dual-tube air struts
• Adjustable camber plates
• Double-bellow air springs

Rear

• Two 50mm dual-tube air struts
• Adjustable camber plates
• Double-bellow air springs

This package does not include:

• Air tank
• Compressor
• Air lines
• Solenoid manifold
• Pressure sensors
• Electronic controller

These components are purchased separately unless part of a complete air suspension package.

Adjustable Ride Height

One of the biggest advantages of air suspension is the ability to instantly adjust ride height.

Benefits include:

• Lower stance for shows
• Increased clearance for driveways
• Better practicality for daily driving
• Adjustable appearance
• Improved versatility

Unlike lowering springs or coilovers, ride height can be changed without manually adjusting suspension collars.

50mm Dual-Tube Dampers

Truhart equips the Air Plus system with 50mm dual-tube shock absorbers.

Dual-tube dampers provide:

• Comfortable street ride
• Consistent damping performance
• Good durability
• Reduced road harshness

They are well suited for daily-driven performance vehicles.

Adjustable Camber Plates

The inclusion of adjustable camber plates provides additional suspension tuning options.

Benefits include:

• Improved wheel alignment
• Better tire contact during spirited driving
• Additional clearance for aggressive wheel fitment
• Easier alignment after lowering

Proper alignment remains essential after installing any adjustable suspension system.

Double-Bellow Air Springs

The kit uses double-bellow air bags on all four corners.

Advantages include:

• Larger air volume
• Improved load support
• Smooth ride quality
• Progressive spring characteristics
• Wide ride-height adjustment range

Double-bellow designs are commonly found on performance-focused air suspension systems.

Daily Driving Benefits

When paired with a quality air management system, the Truhart Air Plus kit offers several everyday advantages.

Potential benefits include:

• Easier driveway clearance
• Adjustable ride height for road conditions
• Improved comfort over rough pavement
• Reduced scraping on steep inclines
• Convenient parking height adjustments

Performance Considerations

Although air suspension technology has advanced significantly, suspension tuning remains important.

Proper setup can help achieve:

• Predictable handling
• Consistent ride quality
• Balanced cornering
• Improved stance
• Street-friendly drivability

Enthusiasts who frequently participate in motorsports may still prefer dedicated coilover systems depending on their performance goals.

Air Suspension vs Coilovers

Air suspension is often chosen for its versatility, while coilovers remain popular for dedicated competition setups.

Who Should Buy This Kit?

The Truhart Air Plus kit is ideal for:

• Subaru WRX STI enthusiasts
• Daily drivers
• Show car builds
• Stance builds
• Street performance projects
• Weekend cruisers
• Custom wheel fitment

Pros

• Complete front and rear air strut kit
• 50mm dual-tube dampers
• Adjustable camber plates
• Double-bellow air springs
• Adjustable ride height
• Designed specifically for the 2005–2007 WRX STI
• Great combination of performance and appearance

Cons

• Air management components sold separately
• Professional installation is recommended
• Requires suspension alignment after installation

Final Verdict

The Truhart Air Plus Air Suspension Kit offers a solid foundation for 2005–2007 Subaru WRX STI owners looking to combine adjustable ride height with everyday drivability. Featuring 50mm dual-tube air struts, adjustable camber plates, and double-bellow air springs, the kit delivers the flexibility that many enthusiasts want for both street use and show builds.

When paired with a quality air management system, it provides a practical way to enjoy a low stance without sacrificing the ability to raise the car for speed bumps, driveways, or rough roads.