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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
Quick disconnect EFI adapter fitting
While the original GR40 set the standard for rally-strength durability and precise control with inverted dampers
limiting this flex and keeping the front suspension geometry more consistent through the corner
Flatout Suspension GR40-PRO Coilovers - 2015-2021 Subaru STI PDM_caster-adjustment The header bolts directly toFlat 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