Refined enough for every day. Capable enough for every back road.
The Spec-A is engineered specifically for the 2005–2007 Subaru STI, delivering sharper handling, improved ride quality, and a lower stance while preserving the everyday comfort that's often lost with traditional performance coilovers.
Dežru Spec-A Coilovers – Subaru STI (2005–2007)
The Dežru Spec-A is engineered specifically for the 2005–2007 Subaru STI, providing improved chassis control, greater driver confidence, and a cleaner lowered stance while maintaining the ride quality expected from a performance car that's driven every day.
The GD STI is legendary for its rally heritage, responsive drivetrain, and razor-sharp handling. Unfortunately, many aftermarket coilovers push the chassis toward excessive stiffness, reducing compliance and making the car less enjoyable on real roads. The Spec-A focuses on improving the strengths of the STI without compromising comfort, using balanced spring rates and carefully matched damping to keep the suspension composed over everything from rough city streets to fast mountain roads.
With a lowering range of 0.5" to 3" below OEM ride height, the Spec-A delivers an aggressive appearance while maintaining proper suspension travel, predictable handling, and excellent everyday drivability.
Key Features
- Comfort-focused monotube dampers tuned specifically for the GD STI chassis.
- Rebound adjustable (20 clicks) for fine-tuning ride quality and chassis response.
- ~325 lb/in front and ~325 lb/in rear spring rates, selected for responsive handling while maintaining street comfort.
- Dual height adjustment for independent ride height and preload adjustment.
- Radial bearing front assemblies for smooth, precise steering feel.
- OEM hybrid upper mounts to reduce noise, vibration, and harshness.
- CNC machined high-flow piston for consistent damping performance.
- Electro-plated steel shock bodies for corrosion resistance and durability.
- Stainless steel shim stacks for dependable long-term reliability.
- Factory-style mounting brackets for a straightforward installation.
- Fully rebuildable with individual replacement parts available.
Performance Character
The Spec-A enhances the STI's already capable chassis by reducing body roll, brake dive, and weight transfer while maintaining enough suspension compliance to keep the car comfortable during everyday driving. Instead of relying on excessive spring stiffness, the suspension works with the chassis to deliver confidence through proper damping control.
The balanced spring rates complement the STI's drivetrain, Brembo braking system, and AWD layout, providing sharper turn-in, improved mid-corner stability, and greater confidence during acceleration without introducing unnecessary harshness.
Whether navigating daily traffic, cruising on the highway, or attacking your favorite back road, the Spec-A delivers a composed, planted feel that inspires confidence while remaining comfortable enough for long drives.
Although designed primarily for spirited street driving, the Spec-A is equally capable during weekend canyon runs, autocross events, and occasional track days, making it an excellent all-around suspension for enthusiasts who actually drive their STI.
Who This Is For
- Drivers looking for a comfortable lowered 2005–2007 Subaru STI
- Owners who want sharper handling without sacrificing ride quality
- Daily-driven STIs that see spirited weekend driving
- Enthusiasts replacing aging factory suspension with a premium rebuildable coilover
If you want your STI to feel more planted, more precise, and more refined without becoming harsh or tiring to drive, the Spec-A delivers exactly that.
