Tein Street Basis Z Coil Overs – Subaru Impreza GDA / GDB

Description

The Street Basis Impreza kit is a Tein Street Basis Z height-adjustable coilover kit for the Subaru Impreza with 5×100 PCD, with twin-tube dampers and fixed damping.

Key features of the Street Basis Impreza

• Product line: Tein Street Basis Z coilover kit
• Tein part number: GSS54-81SS2
• Damping force adjustment: none (fixed damping)
• Damper: twin-tube, sealed structure (not rebuildable)
• Ride height adjustment: thread type, by moving the lower spring seat (not full-length adjustable)
• Upper mounts: uses the car’s original upper mounts, which are not included
• Springs: Tein no-sag springs, cold formed from SAE9254 steel (minimum tensile strength 200 kgf/mm²), powder coated
• Shell case: TEIN-green powder coat, 2-layer 1-bake method over a blasted surface
• ZTP coating on the ride height adjustment thread
• Dust boots to guard the piston rod (some vehicles re-use the OE dust boots)
• High-performance damper oil
• Spring rates: front 5.0 kgf/mm, rear 4.0 kgf/mm
• For 100mm PCD (5×100) models only
• SKU: GSS54-81SS2

Specifications

How it works

The Street Basis Impreza kit is from the Tein Street Basis Z range. The top of each shell pipe is narrowed, oil and gas are injected, and the unit is sealed by crimping the metal, which shortens production and keeps the price down. The twin-tube design gives a longer stroke with a smaller repulsive force than a regular mono-tube damper, so the car rides gaps and bumps steadily, with a smooth ride at low speed and stability at high speed.

On the Street Basis Impreza kit, ride height is set by moving the lower spring seat up or down on the threaded body, a simple layout that is easy to use. Damping is fixed, with the valving matched to the supplied springs. The kit uses the original upper mounts from the car, so check they are in good condition before fitting.

Built to last

The Street Basis Impreza shell case is finished in TEIN-green powder coat, applied with a patented 2-layer, 1-bake method over a blasted surface, and the ride height thread has ZTP coating against gravel, debris and rust. The damper oil holds a stable viscosity across a broad temperature range and resists foaming, heat and deterioration over time.

Fitment

The Street Basis Impreza kit fits the Subaru Impreza WRX (GDA) from 2000 to 2007 and the Impreza WRX STI (GDB) from 2000 to 2004 (Types A to D), 2.0 AWD. It is for 100mm PCD models only, so check the wheel stud pattern before ordering. Check the Fitments tab for your exact model before ordering the Street Basis Impreza kit.

Setting up

Set the Street Basis Impreza ride height within the recommended range shown in the table, keep it even from side to side, then have the wheel alignment checked. Going beyond the recommended range may cause clearance or interference issues and may void the product warranty.

If you are asking us about this item, quote the SKU GSS54-81SS2 so we can match the exact part.

Related Tein products

See also: Tein Street Basis Z Coil Overs – Mitsubishi Evo 7/8/9, Tein Street Basis Z Coil Overs – Mazda MX5 90-05 NA / NB, Tein Street Basis Z Coil Overs – Nissan S14.

Confirm exact vehicles on the Fitments tab before ordering.