Tein GSS60-9USS2 Street Advance Z Coilovers for 2002-2007 Subaru WRX STI

Vehicle Fitment

• 2002-2007 Subaru Impreza WRX (GDA/GDB/GGA/GGD, AWD, 2.0L Turbo H4)
• 2004 Subaru Impreza WRX STI (GDF/GDB, AWD, 2.5L Turbo H4, PCD 100)
• 2005-2007 Saab 9-2X Aero (GGA, AWD, 2.0L Turbo H4)

Features

• TEIN Street Advance Z twin-tube coilover suspension system
• 16-way damping force adjustment for customizable ride and handling
• Thread-type ride height adjustment for aggressive stance control
• ZT-coated threaded adjustment sleeve for improved corrosion resistance
• Twin-tube damper design improves ride comfort and suspension stroke
• High-strength SAE9254 steel springs designed to resist sagging
• Full-length dust boots protect piston rods from debris and contaminants
• Compatible with TEIN EDFC electronic damping controller (optional)

Specifications

• Part Number: GSS60-9USS2
• Product Type: Coilover Suspension Kit
• Damper Type: Twin-Tube
• Damping Adjustment: 16-Way Adjustable
• Ride Height Adjustment: Thread-type spring seat
• Front Spring Rate: 5 kg/mm (280 lb/in)
• Rear Spring Rate: 5 kg/mm (280 lb/in)
• Spring Inner Diameter: 70 mm (Front & Rear)
• Front Spring Length: 250 mm
• Rear Spring Length: 225 mm
• Front Lowering Range: approx. -1.0 in to -3.1 in (-25 mm to -80 mm)
• Rear Lowering Range: approx. -0.7 in to -3.0 in (-18 mm to -75 mm)
• Upper Mounts: OEM mounts reused (not included)

Included Components

• 2x Front TEIN coilover assemblies
• 2x Rear TEIN coilover assemblies
• 4x Performance coil springs
• 4x Dust boots
• 4x Bump stops
• 4x Adjustable spring seats with thrust washers
• 1x Installation instruction manual

Product Description

The TEIN Street Advance Z Coilover Kit (GSS60-9USS2) is designed to deliver improved handling, adjustable ride height, and daily-driving comfort for the 2002-2007 Subaru Impreza WRX platform and select AWD variants including the 2004 WRX STI and 2005-2007 Saab 9-2X Aero. This suspension system uses TEIN's twin-tube damper design, which allows longer suspension stroke and smoother compression characteristics compared to many monotube designs, improving ride comfort on uneven roads while maintaining precise cornering stability.

This kit includes 16-way damping adjustment that allows drivers to fine-tune ride firmness and handling response. The threaded spring seat enables ride height adjustment with a typical lowering range of approximately 1.0-3.1 inches in the front and 0.7-3.0 inches in the rear depending on the vehicle and setup. The system reuses OEM upper mounts for installation and uses corrosion-resistant ZT-coated adjustment threads for long-term durability. Ideal for enthusiasts seeking a balanced suspension upgrade, the Street Advance Z system provides improved stance, sharper handling, and reliable TEIN performance for daily driving or spirited street use.