Whiteline Rear Trailing Arm Front Bushing Kit – 2002-2007 Subaru WRX/STI

Whiteline Rear Trailing Arm Front Bushing Kit – 2002-2007 Subaru WRX / STI

Rebuild the Rear Trailing Arm on the GD WRX and STI
The rear trailing arm front bushing on the 2002-2007 Subaru WRX and STI (GD chassis) is the forward mount of the rear trailing arm — the bushing most responsible for controlling rear wheel longitudinal position under acceleration and braking loads. Whiteline’s polyurethane kit restores precise trailing arm location on the GD platform.

DETAILS

• Polyurethane rear trailing arm front bushing kit for GD WRX and STI
• Reduces trailing arm fore-aft movement under acceleration and braking
• Improves rear axle stability and geometry consistency
• Fitment: 2002-2007 Subaru WRX and STI (GD chassis)
• Limited Lifetime Warranty

GD WRX and STI Trailing Arm Wear
The GD WRX and STI are performance AWD cars that put significant loads through the rear suspension under hard use. The trailing arm front bushing is the highest-loaded position in the rear suspension — it resists the fore-aft forces that acceleration and braking impose on the rear wheels. Wear here allows toe changes under load that degrade rear axle consistency.

Fundamental to GD Rear Axle Precision
On a performance AWD car like the GD WRX and STI, rear axle precision under acceleration is directly related to the effectiveness of the AWD traction management system. Worn trailing arm bushings allow rear wheel geometry variation that introduces inconsistency into the AWD system’s operation.

Part of GD Rear Refresh
The trailing arm front bushing is one of the highest-priority positions in the GD rear suspension. Pair it with lateral link bushings and rear differential mounts for a comprehensive GD rear rebuild.

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

One of the most impactful rear bushing replacements available for the GD WRX and STI. Budget an afternoon for the job — bushing replacement is not complicated but does require the correct press tools and clean installation technique. Apply grease to all polyurethane-to-metal interfaces and assemble at ride height for correct bushing set. The improvement in chassis feel is immediate and the polyurethane will outlast whatever rubber is in there now.

What’s in the Box

• Polyurethane rear trailing arm front bushing kit for GD WRX and STI
• Reduces trailing arm fore-aft movement under acceleration and braking
• Improves rear axle stability and geometry consistency

Fitment