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

The Flatout GR40 coilovers are designed for drivers who want a suspension that balances daily driving comfort with true off-road and rally performance. Offering a 1–3 inch lift over stock ride height, the GR40 provides the ground clearance you need for trails, rallycross, and overland adventures, without sacrificing the smooth ride you expect on pavement.

Built with inverted shocks for rally-strength durability and external reservoir rear shocks for endurance, the GR40 delivers high performance at a price that’s attainable. Whether you’re a casual off-roader, a rallycross competitor, or an enthusiast who wants more out of their vehicle, the GR40 is your all-in-one solution.

Key Features of the GR40 Coilovers

• 1–3” lift over stock ride height for added clearance and capability

• Inverted front shocks for strength and stability in demanding conditions

• External reservoir rear shocks for improved cooling and endurance

• Proprietary off-road valving with bypass pistons → softer at low speeds for comfort, firmer at high speeds for control

• Soft rate LPS 2.5 ID linear springs → enhances comfort without compromising off-road performance

• OEM-style top mounts → keeps operation quiet with reduced NVH

• Electroplated shock bodies → 7–10 years of corrosion resistance

• Rebuildable shock design for long-term serviceability

• 1-way rebound adjustable with 20 points of adjustment

• Backed by a 3-year warranty for peace of mind

Why Choose the Flatout GR40 Coilovers?

• Daily Driver Ready → Smooth and comfortable on pavement.

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

• All-in-One Lift Kit → No need for spacer lifts or mixed spring/shock combos — complete coilover assemblies replace stock units.

• Customizable Performance → Tailor spring rates to match your build (from stock setups to rooftop tents, spare tire carriers, and full gear).

• Durability Guaranteed → Corrosion-resistant finishes, rebuildable design, and a 3-year warranty.

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.”

The Flatout GR40 1–3” Lift Coilover Suspension is the perfect choice for anyone who wants daily comfort, serious off-road performance, and rally-ready durability. Whether you’re tackling trails, racing rallycross, or building an overland rig, the GR40 coilovers deliver the lift, endurance, and adjustability your vehicle deserves.