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

Flatout GR40R Coilovers for 2005-07 Subaru STI

The Flatout GR40R coilover system is a professional rally-ready evolution of our GR40 platform, designed for rally, rallycross, and competitive motorsport use. While the GR40 delivers proven rally-strength performance, the GR40R takes it further with external reservoirs on all four shocks, providing extra oil capacity for fade-free endurance during long, hot, and punishing stages.

Whether you’re tackling gravel rally courses, tight rallycross circuits, or back-to-back track sessions, the GR40R ensures consistent damping performance when standard systems start to fade.

Key Features

• External Reservoirs on All Four Shocks → More oil volume for cooler temperatures and fade-free performance

• 0–2” Adjustable Ride Height → Fine-tune stance and geometry for rally or motorsport conditions

• Inverted Shock Design → Proven strength and rigidity to withstand harsh impacts

• Bypass Piston Valving → Smooth compliance over small chatter while controlling larger hits

• 1-Way Rebound Adjustment → Easy fine-tuning for your preferred surface performance

• Rebuildable Construction → Serviceable and tunable for long-term motorsport use

• Electroplated Shock Bodies → 7–10 years of corrosion resistance for reliable performance

Who Is the GR40R For?

• Rally Drivers → Competitors needing consistency over long stages with critical heat management

• Rallycross Racers → Drivers facing intense short sessions demanding precise, fade-free damping

• Motorsport Enthusiasts → Grassroots competitors and teams seeking pro-level suspension without stepping up to GR50R

• Builders & Tuners → Projects needing rally-strength durability plus endurance upgrades

Customer Benefits

• Fade-free performance thanks to external reservoirs on all four corners

• Proven rally coilover strength with enhanced endurance for competitive use

• Adjustable rebound for fine-tuning suspension behavior to your driving style

• Rebuildable design built to last through season-after-season use

• Better consistency and control than standard GR40 in high-demand motorsport conditions