Flatout Suspension Porsche 997 C4 [GR40] GR4-997C4

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

Flatout GR40 Coilovers for Porsche 997 C4

The Flatout GR40 Coilovers are engineered for drivers seeking a perfect blend of daily driving comfort and rally-capable performance. With a 1–3 inch adjustable lift, your Porsche 997 C4 gains the clearance needed for trails, rallycross, and overland adventures, all while maintaining a smooth, controlled ride on pavement.

Featuring inverted front shocks for rally-strength durability and external reservoir rear shocks for enhanced endurance, the GR40 delivers high performance at an accessible price. Whether you’re a casual off-roader, a competitive rallycross driver, or an enthusiast wanting more from your vehicle, the GR40 is an all-in-one solution.

Key Features

• 1–3” Adjustable Lift → Increase ground clearance for improved off-road capability.

• Inverted Front Shocks → Maximize strength and stability under demanding conditions.

• External Reservoir Rear Shocks → Improved cooling and fade resistance for endurance driving.

• Proprietary Off-Road Valving with Bypass Pistons → Comfortable at low speeds, firmer at high speeds.

• Soft Rate LPS 2.5 ID Linear Springs → Enhances comfort without compromising off-road performance.

• OEM-Style Top Mounts → Reduced NVH for a quiet, smooth ride.

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

• Rebuildable Shock Design → Long-term serviceability and tuning support.

• 1-Way Rebound Adjustable (20 Points) → Fine-tune ride for street, gravel, or trail.

• 3-Year Warranty → Confidence in durability and performance.

Why Choose Flatout GR40 Coilovers?

• Daily Driver Ready → Smooth and controlled performance on pavement.

• Rally Proven → Strong inverted shocks and external reservoirs handle rallycross and aggressive off-road use.

• All-in-One Lift Kit → Complete coilover assemblies replace stock units—no spacers or mixed setups required.

• Customizable Performance → Adjust spring rates and damping for stock, fully loaded, or overland setups.

• Durability Guaranteed → Corrosion-resistant finishes and rebuildable design ensure long-term reliability.

Flatout GR40 Coilovers provide the Porsche 997 C4 with rally-inspired strength, precise handling, and adjustable lift—perfect for enthusiasts who demand versatility, performance, and comfort in one complete suspension package.