Tein VSS28-C1SA4-C Flex Z Coilover Kit for 2002-07 Subaru Impreza WRX/STI AWD

Vehicle Fitment

• 2002-2007 Subaru Impreza WRX / WRX STI (AWD, 2.0L/2.5L Turbocharged, various body styles) - chassis GDA/GDB/GGA (fitment to be verified by installer)

Features

• Full-length ride height adjustability to maintain damper travel when lowering
• 16-step damping force adjustment for greater tuning flexibility
• Twin-tube damper design for enhanced ride comfort and handling stability
• Upper mounts included, with front camber-adjustable mount where applicable
• ZR-Coating or equivalent corrosion-resistant finish for durability
• No-sag, cold-formed coil springs designed for lowered stance without sacrificing control
• Optimised for street performance, daily driveability and occasional track use
• Direct-fit installation for listed models with minimal modification required

Specifications

• Part Number: VSS28-C1SA4-C
• Drive Layout: All-Wheel Drive (AWD)
• Damping Adjustment: 16 levels (combined compression & rebound)
• Ride Height Change: approx. Front: -5.1" to +0.2" (-130 mm to +5 mm) • Rear: -3.1" to -0.9" (-80 mm to -23 mm) (varies by model) :contentReference[oaicite:1]{index=1}
• Front Spring Rate: approx. 336 lb/in (~60 kgf/mm) • Rear Spring Rate: approx. 280 lb/in (~50 kgf/mm) :contentReference[oaicite:2]{index=2}

Included Components

• 1x Left front strut assembly (spring, damper, mount)
• 1x Right front strut assembly (spring, damper, mount)
• 1x Left rear shock & spring assembly
• 1x Right rear shock & spring assembly
• Comprehensive hardware kit: adjuster collars, lock rings, dust boots, preload collars, installation instructions

Product Description

The Tein Flex Z Coilover Kit (VSS28-C1SA4-C) is engineered for the 2002-2007 Subaru Impreza WRX and WRX STI AWD models, offering drivers a serious upgrade in suspension performance without sacrificing everyday usability. With full-length ride height adjustability and a twin-tube damper architecture, you gain the ability to lower your vehicle's stance while maintaining proper damper stroke and spring preload for optimum control.

The 16-step damping force adjustment allows you to fine-tune the ride from comfortable daily driving to spirited back-road performance. Whether you're chasing sharper handling or a lower stance with confidence, this kit delivers. Installation is straightforward on compatible models, and once a professional alignment is completed, you'll benefit from improved cornering response, reduced body roll and enhanced driver feedback.

Ideal for Impreza WRX/STI owners wanting a cohesive suspension solution that balances performance and ride comfort. Please verify your vehicle's chassis code, drivetrain and fitment specifics before installing.