Whiteline Lowering Springs Kit – 2004-2007 Subaru STI

Whiteline Lowering Springs Kit – 2004-2007 Subaru STI

Purpose-Built Lowering Springs for the GD STI
The Whiteline lowering spring kit for the 2004-2007 Subaru STI (GD chassis) is a progressive-rate, direct-fit package engineered specifically for the GD STI platform. The STI’s Bilstein dampers and stiffer factory suspension tune are considered in the spring rate and progressive curve design — these springs work with the factory dampers rather than fighting their calibration.

DETAILS

• Progressive rate lowering springs for 2004-2007 Subaru STI (GD chassis)
• Compatible with OEM Bilstein shock absorbers and common aftermarket dampers
• Developed at Whiteline’s Australian facility
• Reduces center of gravity and body roll
• Direct bolt-in — no modification required

GD STI Platform Specifics
The 2004-2007 GD STI uses Bilstein shocks as standard — a stiffer specification than the WRX. Whiteline’s spring kit is calibrated for the Bilstein damper characteristics. Running springs calibrated for a softer damper on the STI’s Bilstens can produce a harsh, unsettled ride.

Dual-Purpose Progressive Rate
The GD STI was regularly used as both a daily driver and a track car. The progressive spring rate addresses both uses — soft enough for daily comfort, stiff enough for track cornering loads.

Stack With Sway Bars and Bushings
The Grip Series 1 kit (WHLGS1-SUB004) includes these springs alongside matched sway bars and endlinks for a complete suspension package. If you want to build the suspension in stages, these springs are the correct foundation.

Why Choose Whiteline

Whiteline has been engineering suspension components from their facility in Australia since 1979. Every product in their catalog is developed with a clear goal: measurable improvement in handling, stability, and tyre contact. Whiteline’s polyurethane bushings, sway bars, control arms, and alignment correction kits are engineered using finite element analysis and validated on track before they reach the market. Their components are direct-fit, bolt-on solutions designed for enthusiasts who want real performance gains without fabrication or custom work.

The RallySport Take

The right lowering spring for the GD STI. Bilstein-compatible rate curve, Whiteline quality, direct fitment. Get an alignment after installation — lowering changes geometry and the car won’t handle correctly without a proper four-wheel alignment at the new ride height. Combine with Whiteline’s roll center correction kit if the car uses MacPherson strut front suspension.

What’s in the Box

• Progressive rate lowering springs for 2004-2007 Subaru STI (GD chassis)
• Developed at Whiteline’s Australian facility
• Reduces center of gravity and body roll

Fitment