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

Flatout GR40R Rally-Ready Coilovers for 2008–2014 Subaru STI

The Flatout GR40R is the upgraded evolution of the GR40 coilover system, purpose-built for rally, rallycross, and competitive motorsport. While the GR40 delivers strong performance with inverted dampers, the GR40R adds external reservoirs on all four shocks, increasing oil capacity, keeping dampers cooler, and preventing fade during intense competition.

Whether attacking gravel stages, rallycross courses, or back-to-back track sessions, the GR40R maintains consistent damping performance where lesser systems fall short.

Key Features

• External Reservoirs on All Four Shocks → More oil for cooler temps and fade-free endurance.

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

• Inverted Shock Design → Proven strength and rigidity for harsh impacts.

• Bypass Piston Valving → Smooth compliance over small bumps with control over larger hits.

• 1-Way Rebound Adjustment → Easy tuning to match surface conditions.

• Rebuildable Construction → Serviceable for long-term racing use.

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

Who Should Choose the GR40R?

• Rally Drivers → Consistent performance over long stages with essential heat management.

• Rallycross Racers → Intense short sessions requiring precision and fade-free damping.

• Motorsport Enthusiasts → Grassroots competitors needing pro-level suspension without stepping up to GR50R.

• Builders & Tuners → Ideal for projects needing rally-strength durability and endurance.

Customer Benefits

• Fade-Free Performance → External reservoirs ensure damping consistency under extreme conditions.

• Rally-Proven Strength → Inverted shocks and advanced valving handle harsh motorsport demands.

• Adjustable Rebound → Tune suspension behavior to your driving style and terrain.

• Reliable, Rebuildable Design → Serviceable for multiple competitive seasons.

• Better Consistency & Control → Outperforms standard GR40 coilovers in rally and motorsport conditions.

The Flatout GR40R Coilovers deliver professional-grade rally and motorsport suspension for the 2008–2014 Subaru STI, combining durability, adjustability, and endurance to dominate any stage or competition.