08-14 Subaru WRX

The Flatout Suspension GR40-PRO is a professional-grade rally and rallycross coilover system built for serious motorsport competition. Designed for rally racing, rallycross, and mixed-surface driving, the GR40-PRO delivers exceptional durability, advanced adjustability, and precise handling in the harshest racing environments.

Featuring inverted shocks, external reservoirs, and advanced bypass valving, the GR40-PRO is engineered to withstand the punishment of competitive racing while maintaining consistent, fade-resistant performance. With fully adjustable 3-way damping, drivers can fine-tune the suspension for tarmac, gravel, dirt, or mixed rally stages.

Key Features

• Motorsport-Grade Construction
  Designed specifically for rally, rallycross, and professional competition use.
• 0–2” Adjustable Ride Height
  Fine-tune ride height, stance, and suspension geometry for different surfaces and driving styles.
• Inverted Shock Design
  Provides increased strength, reduced flex, and improved durability under extreme conditions.
• External Reservoir Shocks
  Increased oil capacity improves cooling and reduces damper fade during long race events.
• Advanced Valving & Bypass Pistons
  Tuned for rally conditions to provide improved compliance, impact absorption, and precise handling.
• Fully Adjustable 3-Way Damping
  Independently adjust:
  • Rebound
  • High-Speed Compression
  • Low-Speed Compression
• Fully Rebuildable Design
  Designed for long-term racing use with complete serviceability and tuning flexibility.
• Electroplated Shock Bodies
  Provides 7–10 years of corrosion resistance for reliable all-weather performance.

Designed For

• Professional rally and rallycross drivers
• ARA and NASA Rally competitors
• Grassroots racers and motorsport enthusiasts
• Drivers seeking maximum durability and adjustability

Customer Benefits

• Rally-proven performance trusted by competitive drivers
• Excellent control on tarmac, gravel, and dirt stages
• Fade-resistant endurance for demanding race conditions
• Precision suspension tuning tailored to driving style and terrain
• Built to survive harsh motorsport abuse and aggressive driving