Flatout GR40 Coilovers – 2” 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.”

What to Expect From Your Long-Travel Suspension

This suspension is designed to prioritize comfort, stability, and everyday usability, while also increasing capability for rough roads and off-pavement driving.

On the Highway

This setup is especially well suited for highway driving. You can expect:

• A smooth, comfortable ride over expansion joints and rough pavement

• Reduced harshness compared to many stock suspensions

• A stable and planted feel at speed

• Less bouncing or lingering motion than very soft spring setups

Overall, it delivers a refined, touring-style ride quality that works well for long drives.

Around Town

• Compliant over potholes and broken pavement

• Comfortable for daily commuting

• Easy to live with in normal driving conditions

• Some natural brake dive typical of comfort-focused suspensions

Off Pavement

• Good traction and compliance on dirt, gravel, and uneven roads

• The suspension absorbs terrain instead of transferring impacts into the cabin

• Stable behavior over dips and rolling surfaces

Overall Balance

This setup is ideal for drivers who value:

• Comfort as the top priority

• Highway composure

• Confidence on rough roads

• A controlled ride without excessive stiffness

This is not a sport or track-oriented setup. It is tuned to provide a smooth, confidence-inspiring ride for daily driving, road trips, and light to moderate off-road use.

Bottom Line

You can expect a ride that is comfortable, stable, and capable, with a noticeable improvement in ride quality and off-road confidence while maintaining excellent daily usability.