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deeper and more defined than the factory exhaust without aggression that would conflict with the RC's character
The header bolts directly to the FA24WGT's factory turbocharger inlet and cylinder head mounting points — professional installation is recommended given the complexity of the exhaust manifold replacement on this platform
While the original GR40 set the standard for rally-strength durability and precise control with inverted dampers
Reduced turbo lag (where applicable)
Flatout Suspension GR40-PRO Coilovers - 2015-2021 Subaru STI PDM_caster-adjustment deeper and more defined thanFlat Out Suspension GR40 PRO Coilovers 2015 2021 Subaru STI The Flatout Suspension GR40 PRO represents the top tier of rally proven coilover systems, engineered specifically for professional rally, rallycross, and competitive motorsport applications. Built for drivers who demand uncompromising strength, adjustability, and control, the GR40 PRO provides championship level performance in the most extreme conditions. Unlike entry level kits, it features