Tein VSSB2-C1SA4-C Flex Z Coilover Kit for 2015-21 Subaru WRX/STI AWD

Vehicle Fitment

• 2015-2021 Subaru WRX (AWD) and WRX STI (AWD) - chassis VAG/VAF

Features

• Full-length ride-height adjustment for lowering without compromising damper travel
• 16-step damping force adjustment allows tuning from comfort to performance
• Twin-tube damper construction tuned for street use with improved handling stability
• Includes front & rear upper mounts for direct-fit installation
• Camber-adjustable front mounts for precise alignment tuning
• Durable anti-corrosion coating for long-term performance
• No-sag high-tensile steel springs designed for reliable lowered stance
• Optimized for street-sport drivers seeking enhanced response and ride quality

Specifications

• Part Number: VSSB2-C1SA4-C
• Drive Layout: All-Wheel Drive (AWD)
• Drop Height Range: Front: ~0.4" to ~3.5" • Rear: ~0.4" to ~3.3"
• Spring Rates: Front: 8 kgf/mm (~448 lb/in) • Rear: 7 kgf/mm (~392 lb/in)
• Damping Adjustment: 16 levels (combined compression & rebound)

Included Components

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

Product Description

The Tein Flex Z Coilover Kit (VSSB2-C1SA4-C) is designed for the 2015-21 Subaru WRX and WRX STI AWD models. This kit provides precise suspension control, allowing drivers to adjust ride height and damping for a perfect balance of performance and comfort.

With a twin-tube damper design and high-tensile springs, the kit improves handling response, reduces body roll, and enhances driver feedback while maintaining street-friendly ride quality. Camber-adjustable front mounts allow fine-tuning alignment for optimal tire contact after lowering.

Ideal for enthusiasts seeking a street-sport suspension upgrade, this kit enhances performance and aesthetics while retaining daily usability. Professional wheel alignment after installation is recommended to ensure maximum handling benefits.