DISCLAIMER: This is a made to order item. The lead time for this product is 4-8 weeks.

Flatout GR40-PRO Coilovers for 2008–2014 Subaru STI

The Flatout GR40-PRO Suspension System is the top-tier professional rally and rallycross coilover kit for the 2008–2014 Subaru STI. Built for professional competition and serious motorsport enthusiasts, the GR40-PRO delivers unmatched durability, adjustability, and precision handling for rally stages, gravel roads, and technical circuits.

With inverted shocks, external reservoirs, and 3-way damping adjustability, this coilover system provides fade-free performance, superior control, and rally-proven reliability, making it ideal for drivers who demand peak performance both on and off the track.

Key Features

• Motorsport-Grade Construction → Engineered for rally, rallycross, and professional competition.

• Ride Height Adjustable (0–2”) → Optimize stance and suspension geometry for performance and clearance.

• Inverted Shock Design → Rally-strength durability, reduced flex, and improved heat dissipation.

• External Reservoir Shocks → Increased oil volume prevents overheating and damper fade.

• Advanced Valving & Bypass Pistons → Comfort during transit, precision under load on all surfaces.

• Fully Adjustable 3-Way Damping → Fine-tune rebound, high-speed, and low-speed compression.

• Rebuildable Design → Long-term serviceability for extended motorsport use.

• Premium Electroplated Finish → 7–10 years of corrosion resistance.

Who Should Choose GR40-PRO?

• Professional Rally Drivers → Compete confidently in ARA and NASA rally events.

• Grassroots Competitors → Upgrade your racing setup with professional-grade suspension.

• Motorsport Enthusiasts → Drivers seeking maximum durability, adjustability, and race-winning performance.

Customer Benefits

• Rally-proven suspension trusted by competitive drivers.

• Handles extreme conditions — tarmac, gravel, and dirt stages.

• Delivers precise handling, endurance, and stability.

• Fully adjustable to match driving style, terrain, and load.

The Flatout GR40-PRO Coilovers provide your 2008–2014 Subaru STI with professional-grade rally suspension, combining strength, adjustability, and precision for motorsport-level performance.