Flatout Suspension GR40 Coilovers – 1–3" Lift Rally-Inspired Suspension System

The Flatout Suspension GR40 is designed for drivers who want a suspension system that combines everyday comfort with serious off-road and rally performance. Providing a 1–3" lift over stock ride height, the GR40 delivers increased ground clearance and capability for trails, rallycross, overlanding, and adventure builds without sacrificing the comfortable ride quality you expect on pavement.

Built around inverted front shocks for increased strength and durability, along with external reservoir rear shocks for improved cooling and endurance, the GR40 is engineered to handle demanding terrain while remaining practical for everyday driving.

Whether you're a weekend off-roader, rallycross competitor, overland enthusiast, or simply looking to get more capability from your vehicle, the GR40 provides a complete, performance-focused suspension solution.

IMPORTANT: The Flatout Suspension GR40 is intended for OFF-ROAD USE ONLY and is not designed or intended for use on public roads. Please allow 8–10 weeks for production and delivery. This product is built to order.

Key Features

• 1–3" Lift Over Stock Ride Height — Increase ground clearance and suspension capability for trails, rallycross, and overland use.

• Inverted Front Shocks — Heavy-duty inverted design provides increased strength and stability in demanding conditions.

• External Reservoir Rear Shocks — Increased oil capacity helps improve cooling and endurance during extended off-road use.

• Proprietary Off-Road Valving with Bypass Pistons — Tuned to provide softer damping at lower speeds for comfort and firmer control as speeds and impacts increase.

• Soft-Rate LPS 2.5 ID Linear Springs — Designed to improve ride comfort while maintaining capable off-road performance.

• OEM-Style Top Mounts — Helps reduce noise, vibration, and harshness (NVH) for quieter operation.

• Electroplated Shock Bodies — Corrosion-resistant finish designed to provide 7–10 years of protection in demanding environments.

• Rebuildable Shock Design — Allows for long-term serviceability and maintenance.

• 1-Way Rebound Adjustable — 20 points of rebound adjustment allow you to fine-tune suspension behavior for your driving style and terrain.

• 3-Year Warranty — Backed by a 3-year warranty for additional peace of mind.

Why Choose the Flatout GR40?

Daily-Driver Ready
Designed to provide a comfortable, controlled ride on pavement while maintaining the performance needed for off-road driving.

Rally Inspired
Inverted front shocks, external reservoir rear shocks, and performance-oriented valving provide the durability and control needed for aggressive driving.

Complete Lift Solution
The GR40 replaces your factory suspension with complete coilover assemblies, eliminating the need for spacer lifts or mismatched spring and shock combinations.

Customizable Performance
Spring rates can be tailored to your vehicle and build, from near-stock configurations to heavier setups equipped with rooftop tents, spare tire carriers, bumpers, and additional gear.

Built for Long-Term Use
With corrosion-resistant shock bodies, rebuildable components, and a 3-year warranty, the GR40 is designed to provide reliable performance for years to come.

Customer Reviews

⭐️⭐️⭐️⭐️⭐️
"Hands down night and day difference over a factory suspension. It ate up every bump and rock on the trail. Even with a rooftop tent and spare tire carrier, the ride sits level and stable. 10/10 job Flatout."

⭐️⭐️⭐️⭐️⭐️
"I live in a rural area and needed something functional, not just aesthetic. The GR40s were exactly what I was looking for — quality build, smooth install, and great performance both on and off road."

⭐️⭐️⭐️⭐️⭐️
"Game changer. After a year with the GR40s and multiple rallycross events, they've taken a beating and still perform flawlessly. If you want competitive rallycross suspension, these are it."

⭐️⭐️⭐️⭐️⭐️
"Great lift suspension. Perfect for overland and camping. The ability to customize spring rates is a huge plus."

Built for the Street-to-Trail Enthusiast

The Flatout Suspension GR40 1–3" Lift Coilover System delivers increased ground clearance, adjustable damping, customizable spring rates, and rally-inspired durability in one complete suspension package.

From rallycross and technical trails to overland adventures and backcountry exploration, the GR40 is built to provide the performance, control, and durability needed to push your vehicle further.

⚠️ Ordering & Lead Time

OFF-ROAD USE ONLY. This suspension system is designed specifically for off-road applications and is not intended for use on public roads.

Estimated lead time: 8–10 weeks. The GR40 is built to order. Please allow approximately 8–10 weeks for production and delivery before placing your order.