Flatout Suspension GR40R – Lamborghini Huracán "DIY Sterrato" Long-Travel Coilovers

Want Sterrato capability without buying a Sterrato? The Flatout Suspension GR40R for the Lamborghini Huracán is designed to transform the standard Huracán into something considerably less concerned with perfect pavement.

Developed as the suspension foundation for a "DIY Sterrato" build, the GR40R combines increased ride height, increased suspension travel, inverted dampers, external reservoirs, and off-road-focused spring rates to give the Huracán the clearance and suspension capability needed for gravel, desert roads, broken pavement, and high-speed all-surface driving.

The factory Huracán Sterrato sits approximately 44 mm / 1.73 inches higher than the Huracán EVO 4WD while providing 25% more front wheel travel and 35% more rear wheel travel. The GR40R follows that same philosophy, giving standard Huracán owners the increased ride height and suspension movement needed to build their own Sterrato-inspired Huracán.

Build Your Own Sterrato

This isn't a conventional Huracán coilover with the ride height simply cranked upward. The GR40R uses extended-length, long-travel dampers designed around the increased ride height and suspension range of the factory Sterrato.

The goal is simple: increase ground clearance while giving the suspension the additional movement it needs to actually work on rough surfaces. Instead of sacrificing suspension travel to gain height, the GR40R increases the working range of the suspension along with the ride height.

• Up to 44 mm / 1.73" Increased Ride Height → Designed to replicate the increased ground clearance of the factory Huracán Sterrato.

• 25% Increased Front Wheel Travel → Additional suspension movement provides greater compliance over gravel, broken pavement, dips, and uneven terrain.

• 35% Increased Rear Wheel Travel → Increased rear suspension movement helps maintain tire contact and stability across rough and loose surfaces.

• 10-Inch Coil Springs → Longer springs provide the working range required for the increased ride height and long-travel damper design.

Off-Road Focused Spring Rates

A lifted Huracán needs a very different suspension philosophy than one being lowered for street or track use. Excessive spring rate reduces compliance and mechanical grip on loose and uneven surfaces, exactly where a long-travel suspension needs to work.

Our standard Huracán GR40R configuration uses 450 lb/in front and 600 lb/in rear 10-inch springs. The staggered spring rates complement the Huracán's rear-biased weight distribution while providing the support required for the increased ride height and available suspension travel.

The 450F / 600R combination is intentionally selected to balance body control with off-road compliance. Rather than relying on excessively stiff springs to control large impacts, the GR40R allows the dampers, increased suspension travel, and valving to do the work.

The result is better mechanical grip and a suspension capable of absorbing broken pavement, gravel, washboard, and desert terrain without turning the Huracán into an unnecessarily stiff off-road novelty.

External Reservoirs for Sustained Performance

The GR40R uses external reservoirs on all four dampers, increasing oil and gas volume compared with a conventional monotube shock. The additional capacity helps control damper temperatures and maintain consistent performance during prolonged high-speed use.

Whether you're running quickly across a desert road, spending an afternoon on gravel, or simply dealing with rough pavement at Huracán speeds, the additional thermal capacity helps prevent damping performance from changing as temperatures increase.

Key Features of the Huracán GR40R

• DIY Sterrato Configuration → Purpose-built long-travel suspension package for transforming the standard Huracán into a Sterrato-inspired all-surface build.

• Up to 44 mm / 1.73" Increased Ride Height → Increased ground clearance based around the factory Sterrato ride-height increase.

• 25% Increased Front Wheel Travel → Additional front suspension movement for improved compliance across rough terrain.

• 35% Increased Rear Wheel Travel → Additional rear suspension movement helps maintain traction and stability over uneven surfaces.

• External Reservoirs on All Four Shocks → Increased oil and gas volume for improved heat management and consistent damping during sustained high-speed use.

• 450F / 600R Spring Rates → Off-road-focused spring rates selected to balance support, mechanical grip, suspension travel, and compliance.

• 10-Inch Coil Springs → Longer springs complement the extended-travel damper design.

• Inverted Shock Design → Increased rigidity and strength for harsh impacts and demanding terrain.

• Bypass Piston Valving → Compliance over smaller surface irregularities with increased control during larger suspension events.

• 1-Way Rebound Adjustment → Fine-tune suspension response for pavement, gravel, desert roads, and changing surface conditions.

• Rebuildable Construction → Fully serviceable and tunable for long-term performance use.

• Electroplated Shock Bodies → Durable corrosion-resistant finish designed for long-term service in demanding environments.

Who Is the Huracán GR40R For?

• DIY Sterrato Builders → Huracán owners looking to create a Sterrato-inspired build using a purpose-designed long-travel suspension rather than simply adding spacers.

• Safari Builds → Cars being built with increased ride height, all-terrain tires, underbody protection, rally lighting, or other all-surface modifications.

• Desert & Gravel Driving → Owners who want additional clearance, travel, and heat capacity for high-speed use on loose and uneven surfaces.

• Real-World Huracán Owners → Anyone tired of treating potholes, broken pavement, steep driveways, and questionable roads like they're part of an obstacle course.

Why Long Travel Matters

Simply lifting a vehicle doesn't automatically make it more capable. Increasing ride height without increasing available suspension movement can reduce droop travel, compromise ride quality, and leave the tires with less ability to follow uneven terrain.

The GR40R takes a different approach. Ride height and suspension travel are increased together. This gives the Huracán additional ground clearance while preserving the suspension movement necessary to maintain tire contact over dips, crests, washboard, and uneven surfaces.

That additional travel is what separates a functional Sterrato-style suspension from a Huracán that has simply been made taller.

From Supercar to DIY Sterrato

The Huracán already provides an incredible platform for an all-surface build. The Sterrato demonstrated what happens when that platform is given additional ground clearance, suspension travel, and a suspension designed to work beyond smooth pavement.

The Flatout GR40R brings that philosophy to the standard Huracán.

Whether you're building a complete Sterrato-inspired Huracán with all-terrain tires, skid protection, and rally lighting or simply want additional ground clearance and suspension capability, the GR40R provides the foundation to make it happen.

More clearance. More travel. More places to use your Huracán.

What's Included

• 2 Front GR40R long-travel coilovers

• 2 Rear GR40R long-travel coilovers

• 4 External reservoirs with remote hoses

• 2 Front 10" 450 lb/in coil springs

• 2 Rear 10" 600 lb/in coil springs

Specifications

Application: Lamborghini Huracán

Intended Use: DIY Sterrato / Safari / Rally-Inspired / All-Surface Builds

Ride Height Increase: Up to approximately 44 mm / 1.73 inches

Front Wheel Travel: Approximately 25% increase over standard Huracán EVO 4WD

Rear Wheel Travel: Approximately 35% increase over standard Huracán EVO 4WD

Front Spring Rate: 450 lb/in

Rear Spring Rate: 600 lb/in

Spring Length: 10 inches

Adjustment: 1-Way Rebound Adjustable

Reservoirs: External Reservoirs Front & Rear

Construction: Inverted, Rebuildable Long-Travel Dampers