11/09/2026
The TEIN GSS78-B1SS1 is the Super Street Coilover Kit designed specifically for the Subaru Impreza WRX STI (GRB) chassis produced from roughly 2007 to 2014. This is an archival, street-focused performance suspension system that includes upper mounts.
Key Features of GSS78-B1SS1:
Vehicle Fitment: Subaru Impreza WRX STI Hatchback/Sedan (Chassis code: GRB, 2.0L/2.5L AWD).
Included Components: Complete damper and spring kit packaged with dedicated upper mounts.
Spring Rates: Front: 5.0 kgf/mm, Rear: 4.0 kgf/mm (varies slightly by specific regional batch iterations).
Damping Adjustment: 16-level linear damping force adjustment mechanism (compression and rebound combined).
EDFC Compatibility: Compatible with TEIN's Electronic Damping Force Controller for in-cabin adjustment.
Design Purpose: Geared toward enhanced daily street driving and light winding/sport use rather than hardcore track racing.
In Stock Enquires 0421622288