The PSR Subaru Impreza GD Stage 5 Handling Kit is our absolute top-tier, no-compromise package. If you are building a dedicated track weapon or the ultimate street car and demand nothing but the absolute best, this is the final evolution of GD STI suspension tuning. This package includes every single component from our previous stages and adds the final pieces to the drivetrain and alignment puzzle.

With the lateral links already upgraded to adjustable units in Stage 3, Stage 5 replaces the factory rear trailing arms with Heavy-Duty Adjustable Rear Trailing Arms. This completely removes the final weak link in the rear suspension, allowing for precise adjustment of your rear wheelbase and anti-squat geometry while eliminating all flex.

Finally, we address the rear differential. High horsepower and aggressive launching will cause the rear diff to twist violently on its factory rubber mounts, leading to wheel hop and delayed power transfer. We include a comprehensive Whiteline Rear Differential Mount Bush Upgrade to lock the diff firmly to the rear subframe. Combined with the front pitch stopper and rear subframe lock bolts, your drivetrain is completely secured, delivering 100 percent of your power directly to the ground!

Coilover Options:

• XYZ Race Spec Coilovers: Designed for track-dedicated vehicles, offering much more aggressive spring and damping rates perfectly suited for weekend track days and amateur racing.
• XYZ Circuit Master Coilovers: Built for serious time attack and circuit racing, providing advanced competition-level valving designed to withstand sustained high-speed track abuse.
• XYZ Tarmac Rally Coilovers: Specifically tuned for high-speed tarmac rally events, featuring specialized valving to absorb harsh bumps and uneven road surfaces while maintaining maximum grip.