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

Flatout GR40 Rally Competition Coilovers for 2008–2014 Subaru STI

The Flatout GR40 coilovers are built for drivers demanding precision, durability, and performance in rally, rallycross, and motorsport competition. With 0–2” ride height adjustability, these coilovers let you fine-tune your STI chassis for tarmac, gravel, or rallycross surfaces while maintaining balance, control, and reliability under extreme conditions.

Featuring inverted front shocks for strength and external reservoir rear shocks on select applications, the GR40 provides consistent damping during high-speed impacts and punishing terrain. Proprietary valving with bypass pistons ensures comfort over small bumps while controlling larger impacts, making it ideal for competitive racing.

Key Features

• 0–2” Adjustable Ride Height → Optimize stance and ground clearance.

• Inverted Front Shocks → Maximum strength and stability under harsh conditions.

• External Reservoir Rear Shocks (Application Dependent) → Greater oil capacity for fade-free performance.

• Proprietary Rally Valving with Bypass Pistons → Smooth low-speed comfort, precise high-speed control.

• Soft Rate LPS 2.5 ID Linear Springs → Balance comfort and performance.

• OEM-Style Top Mounts → Reduced NVH and quiet operation.

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

• Rebuildable Coilover Design → Serviceable and race-ready longevity.

• 1-Way Rebound Adjustable → 20 points of tuning for driver preference.

• 3-Year Warranty → Confidence in competition-grade quality.

Why Rally Drivers Choose the GR40

• Designed for Rally & Motorsport → Handles gravel, tarmac, and mixed surfaces.

• Precision Handling & Durability → Endurance under extreme racing conditions.

• Adjustable & Customizable → Tune suspension for driving style and terrain.

• Proven Competition Performance → Trusted in rallycross and grassroots racing.

The Flatout GR40 coilovers transform the 2008–2014 Subaru STI into a competition-ready machine, combining adjustability, reliability, and rally-proven performance for drivers who demand race-level suspension without compromise.