Description
The Dežru Spec-A Coilovers are engineered specifically for the 2005–2007 Subaru Impreza WRX STI, offering a balanced suspension upgrade for drivers who want sharper handling, improved chassis control, and an aggressive lowered stance without sacrificing everyday comfort.
Built around the GD-generation STI's rally-inspired chassis and all-wheel-drive performance, the Spec-A focuses on delivering responsive handling with carefully matched spring rates and damping characteristics. Rather than relying on excessive spring stiffness, this suspension system is designed to maintain a balance between body control, road compliance, and predictable handling across a variety of driving conditions.
With an adjustable ride-height range of approximately 0.5–3 inches below OEM ride height, the Spec-A allows owners to customize the vehicle's stance to suit their preferences and driving requirements. Proper ride-height adjustment helps preserve usable suspension travel and predictable handling.
Whether you're upgrading an aging factory suspension, building a comfortable street car, or preparing your STI for spirited weekend driving, the Dežru Spec-A provides a versatile coilover solution designed around real-world usability.
Comfort-Focused Monotube Dampers
The Spec-A features monotube dampers tuned for the GD STI chassis, providing controlled suspension response during braking, acceleration, and cornering. The damping characteristics are designed to reduce excessive chassis movement while maintaining compliance over rough pavement, expansion joints, and uneven road surfaces.
This approach makes the Spec-A particularly appealing to drivers who want a sportier driving experience without the harsh ride often associated with overly stiff suspension setups.
20-Click Rebound Adjustment
The Spec-A features 20-click rebound adjustment, allowing drivers to fine-tune suspension response according to road conditions and personal preferences.
Softer rebound settings can provide a more compliant ride for daily commuting and longer journeys, while firmer settings can help control suspension recovery during spirited driving and rapid directional changes.
The ability to adjust rebound makes it easier to tailor the suspension to different tires, road surfaces, and driving styles. Optimal settings depend on the vehicle's configuration and intended use.
Balanced 325 lb/in Spring Rates
The system uses approximately 325 lb/in front and 325 lb/in rear spring rates, selected to provide responsive handling while retaining street-friendly ride characteristics.
These spring rates offer a performance-oriented foundation for controlling body movement without depending solely on spring stiffness. When paired with appropriately adjusted damping, the setup is designed to support predictable weight transfer, improved cornering response, and comfortable everyday driving.
Dual Height Adjustment
The Spec-A incorporates dual height adjustment, allowing ride height and spring preload to be adjusted independently within the system's intended setup range.
This design provides greater flexibility when establishing the desired vehicle stance and suspension configuration. Correct adjustment is important for maintaining suitable suspension travel, spring seating, and handling balance.
The specified lowering range is approximately 0.5–3 inches below factory ride height. Actual achievable ride height will depend on the vehicle, installation, and setup requirements.
Radial Bearing Front Assemblies
Radial bearing front assemblies are designed to support smooth suspension and steering movement during cornering and suspension articulation. This design helps provide a more precise steering feel while accommodating the movement required by the suspension.
OEM Hybrid Upper Mounts
The Spec-A uses OEM hybrid upper mounts designed to help reduce additional noise, vibration, and harshness compared with more aggressive solid-mount configurations.
This feature supports the system's street-focused character, making it a suitable option for owners who want improved handling while retaining a refined driving experience.
Durable, Rebuildable Construction
The Spec-A incorporates a CNC-machined high-flow piston, electro-plated steel damper bodies, and stainless-steel shim stacks. These components are designed to support consistent damping performance, corrosion resistance, and long-term durability.
The coilovers are also fully rebuildable, with individual replacement parts available, providing a practical maintenance option for enthusiasts who plan to keep their STI for years to come.
Factory-style mounting brackets are designed to support straightforward installation using the appropriate vehicle-specific hardware.
Key Features
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Comfort-Focused Monotube Dampers: Tuned for the 2005–2007 Subaru STI chassis.
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20-Click Rebound Adjustment: Fine-tune suspension response for comfort and handling.
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Approximately 325 lb/in Front and Rear Springs: Balanced rates for street performance and daily driving.
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Dual Height Adjustment: Independent ride-height and preload adjustment within the intended setup range.
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Adjustable Lowering Range: Approximately 0.5–3 inches below OEM ride height, as specified.
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Radial Bearing Front Assemblies: Designed to support smooth suspension movement and precise steering feel.
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OEM Hybrid Upper Mounts: Help maintain a street-friendly noise and vibration profile.
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CNC-Machined High-Flow Piston: Designed for consistent damping performance.
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Electro-Plated Steel Shock Bodies: Provide corrosion-resistant construction.
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Stainless-Steel Shim Stacks: Designed for durability and reliable damper operation.
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Factory-Style Mounting Brackets: Support vehicle-specific installation.
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Fully Rebuildable Design: Individual replacement parts are available.
Performance Characteristics
The Dežru Spec-A is designed to enhance the handling of the 2005–2007 Subaru STI while preserving the comfort needed for regular road use.
The balanced spring rates and adjustable rebound damping help manage body movement during cornering, braking, and acceleration. This can contribute to more controlled turn-in, improved chassis composure through corners, and a more predictable response during rapid transitions when the suspension is properly configured.
On uneven pavement, the comfort-focused design aims to maintain compliance instead of making the vehicle unnecessarily harsh. The adjustable ride height also allows owners to achieve a lower, more aggressive stance while retaining appropriate suspension travel when correctly set up.
From daily commuting and highway driving to winding mountain roads, autocross, and occasional track days, the Spec-A is designed for enthusiasts who want a versatile suspension system for real-world driving.
Actual ride comfort and handling will vary with ride height, alignment, tires, damping settings, vehicle condition, and road surfaces.
Why Choose the Dežru Spec-A?
The Spec-A is an appealing option for STI owners who prioritize street comfort, adjustable ride height, and long-term serviceability over a highly aggressive track-focused setup.
Its moderate spring rates, rebound adjustment, and OEM hybrid upper mounts are intended to deliver a balanced driving experience. The rebuildable construction also provides a maintenance path for owners who prefer repairing and servicing their suspension rather than replacing the entire system.
Key advantages include:
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Improved chassis control compared with worn or aging dampers.
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Adjustable rebound to suit different driving conditions.
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A customizable lowered stance.
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A street-oriented balance of handling and ride comfort.
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Rebuildable dampers with individual replacement parts available.
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Suitability for daily driving and occasional enthusiast events.
Who Are These Coilovers For?
The Dežru Spec-A Coilovers are ideal for 2005–2007 Subaru STI owners who want a comfortable, lowered, and more responsive vehicle without an excessively stiff suspension setup.
They are particularly suitable for:
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Daily Drivers: Improve suspension control while retaining everyday usability.
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Street Performance Enthusiasts: Enjoy sharper handling on winding roads and during spirited driving.
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Lowered STI Builds: Customize ride height for a more aggressive appearance.
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Weekend Autocross Drivers: Fine-tune rebound for responsive handling, subject to competition rules.
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Occasional Track-Day Participants: Use an adjustable street-oriented suspension for recreational performance driving.
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Long-Term Owners: Benefit from a rebuildable system with individual replacement parts available.
If you want your STI to feel more controlled, responsive, and planted without compromising daily comfort, the Spec-A offers a practical balance of performance and refinement.
What's Included
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Dežru Spec-A coilover assemblies for the front and rear
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Approximately 325 lb/in front and rear springs
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OEM hybrid upper mounts, as specified
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Vehicle-specific mounting components, as supplied with the kit
Confirm the exact kit contents and mounting configuration with the seller before ordering.
Vehicle Fitment
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Make: Subaru
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Model: Impreza WRX STI
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Model Years: 2005–2007
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Chassis Generation: GD/GG platform, depending on body style and market
Fitment Note: Verify the exact chassis, body style, market specification, and mounting configuration before purchase. Compatibility with the standard WRX or other Subaru models should not be assumed without confirmed fitment information.
Disclaimer: This product is built to order. Please allow approximately 3–4 weeks for production before shipment.
