IAG SPEC STREET SERIES COILOVERS BY FORTUNE AUTO – IAG Performance and Fortune Auto have teamed up to bring you the IAG Spec Street Series Coilovers By Fortune Auto, designed for the 2005-2007 Subaru STI vehicle models. These single adjustable coilovers strike the perfect balance between everyday driveability and occasional track use, enhancing your Subaru’s handling without compromising comfort. This complete kit, featuring both front and rear coilovers, delivers improved handling and performance.
THE IAG SPEC DIFFERENCE: WHERE INNOVATION MEETS UNBEATABLE PERFORMANCE – At IAG Performance, we’re committed to pushing the boundaries of automotive performance. Through constant research, development, and testing on countless track days, we’ve developed a reputation for innovation. When we find a part we like from a brand we trust, like the Fortune Auto 500 Coilovers, we take it a step further to make it even better. The IAG Spec Street Series Coilovers are the result of our commitment to perfection. We’ve enhanced key features of the Fortune Auto 500 Coilovers, improving performance, road feel and overall handling to deliver a coilover system that’s optimized for both street and track use.
COILOVER SPECS – The front suspension in the IAG Spec Street Series Coilovers By Fortune Auto are engineered to the following specifications: Front: 127mm front shock stroke, custom shock valving, 270mm shock body, 8 inch spring length, 7kg/mm spring rate. The rear suspension coilovers meet the following specifications: 127mm rear shock stroke, custom shock valving, 300mm shock body, 9 inch spring length, 6kg/mm spring rate. Our Street Series Coilovers are equipped with 10mm extended shock travel.
CUSTOM TUNED – NOT OFF THE SHELF – At IAG Performance, we’re committed to pushing the boundaries of automotive performance. Through constant research, development, and testing on countless track days, we’ve developed a reputation for innovation. When we find a part we like from a brand we trust, like the Fortune Auto 500 Coilovers, we take it a step further to make it even better. The IAG Spec Street Series Coilovers are the result of our commitment to perfection. We’ve enhanced key features of the Fortune Auto 500 Coilovers, improving performance, road feel and overall handling to deliver a coilover system that’s optimized for both street and track use.
10MM EXTENDED TRAVEL – The IAG Spec Street Series Coilovers By Fortune Auto are equipped with a 10mm extended travel front and rear, which allows the shock absorbers to travel within their optimal range, even if the vehicle has been lowered. This adjustable coilover kit makes it easy to drop your car to gain the benefits of improved handling, aerodynamics, improved traction and road feel.
LIGHTWEIGHT AND DURABLE CONSTRUCTION – The IAG Spec Street Series Coilovers By Fortune Auto incorporate the use of lightweight and durable T6061 aluminum in the camber plates and spring perches to maximize weight savings without compromising the strength or integrity of the suspension. In addition, the coilover springs are constructed from an advanced premium alloy of chrome silicone, providing both elasticity and strength, ideal for high-performance applications.
FLOW DIGRESSIVE TECHNOLOGY BY FORTUNE AUTO – The IAG Spec Street Series Coilovers feature Fortune Auto’s Flow Digressive piston technology, which allows for stiff low-speed compression and rebound movement. To compensate for fast stroke speeds like high speed bumps or rough roads, the coilovers automatically adapt to become supple, providing superior mechanical grip and control, even over irregular surfaces. This technology delivers the best of both worlds, offering a versatile shock absorber that excels in everyday driving, along with occasional track use.
ABOUT FORTUNE AUTO – It’s been our privilege to team up with Fortune Auto to create the IAG Spec Street Series Coilovers. Known for their cutting-edge suspension solutions and race-winning innovations, Fortune Auto’s relentless pursuit of performance and quality has resulted in systems that offer exceptional handling, comfort, and durability at an affordable price. Like IAG Performance, Fortune Auto is a U.S.-based, enthusiast-driven brand, making this collaboration a natural fit.
FITMENT – Fits Subaru STi 2005-2007
Key Features of the IAG Fortune Auto Spec Street Series Coilovers (IAG-SUS-1002)
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24-Step Damping Adjustment: Fine-tune your ride for comfort or performance with a simple twist.
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Monotube Damper Design: Ensures consistent damping and superior heat dissipation during spirited driving.
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Custom IAG Valving: Developed by IAG engineers to optimize the Subaru STi’s handling characteristics and ride quality.
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Rebuildable and Upgradeable: Fortune Auto’s modular design means your coilovers can be serviced or upgraded with Swift springs or higher-end internals over time.
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Durable Construction: CNC-machined components, anodized aluminum hardware, and high-strength steel bodies deliver long-lasting reliability.
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Precision Ride Height Control: Lower your STi for improved stance, aerodynamics, and center of gravity without sacrificing suspension travel.
Performance You Can Feel
Installing the IAG-SUS-1002 Coilovers immediately tightens up your STi’s handling, reducing body roll and improving response through every corner. The improved damping control helps maximize tire grip, providing better feedback and confidence whether you’re attacking a backroad or daily commuting.
Unlike harsh, budget coilovers, these are tuned to deliver smooth, controlled damping that doesn’t punish you over bumps or rough roads. The result? A car that feels sharper, more connected, and far more capable.
Built for Subaru Enthusiasts
The Fortune Auto x IAG Spec Street Series coilovers are designed by enthusiasts, for enthusiasts. They combine Fortune Auto’s American engineering with IAG’s Subaru expertise, creating a product that’s both track-proven and street-friendly.
These coilovers are a direct bolt-on fit for:
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2005 Subaru WRX STi
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2006 Subaru WRX STi
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2007 Subaru WRX STi
Whether your build is for weekend canyon runs or autocross competition, these coilovers give your Subaru the agility, control, and ride quality it deserves.
Why Choose IAG Fortune Auto Coilovers for Your STi
Both IAG Performance and Fortune Auto have earned reputations for excellence in the tuning community. This partnership combines race-winning suspension technology with Subaru-specific tuning knowledge, giving you coilovers that deliver performance, comfort, and reliability in one package.
When you want the best balance between everyday usability and motorsport-grade performance, the IAG-SUS-1002 Spec Street Series Coilovers are a top-tier choice.
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