The PSR Subaru Impreza GD/GG Stage 4 Handling Kit is designed for the serious enthusiast looking to extract every ounce of grip from their AWD platform. Taking the incredible foundation of our Stage 3 kit - including XYZ Coilovers, comprehensive bush upgrades, geometry correction, and full sway bar packages - we turn our attention to front chassis rigidity and the remaining rear suspension pivots.

While the GD chassis is inherently stiffer than its predecessor, it still experiences structural flex in the front end under heavy cornering loads. To combat this, we include a Whiteline Front Strut Brace. Tying the front strut towers together prevents the chassis from twisting, ensuring the suspension components absorb the load directly as intended.

To complete the rear suspension lockdown, we introduce Whiteline Rear Trailing Arm Bushes. The factory rubber trailing arm bushes allow the rear hubs to shift forwards and backwards under acceleration and braking, causing dynamic toe changes. Upgrading these to polyurethane completely solidifies the rear end, providing instant forward drive and unwavering stability under heavy braking.