Flatout Suspension GR40R – Long-Travel Reservoir Coilovers for the 2007–2013 BMW X5 (E70)

The Flatout Suspension GR40R is our performance-focused suspension system for the 2007–2013 BMW X5 (E70), designed for drivers who want to take the X5 well beyond its factory suspension capabilities. Building on the proven GR40 platform, the GR40R combines inverted dampers, increased suspension capability, and external reservoirs on all four shocks for greater control both on and off the pavement.

The E70 X5 is a heavy, capable chassis, and that weight can generate significant heat in the dampers when traveling over rough terrain for extended periods. The GR40R's external reservoirs increase oil capacity, helping the dampers manage heat and maintain consistent performance during demanding off-road driving, long washboard roads, overlanding, and repeated high-speed impacts.

Key Features of the GR40R for the BMW X5 E70

• External Reservoirs on All Four Shocks → Increased oil capacity helps control damper temperatures and maintain consistent performance during extended hard use.

• 0–2” Adjustable Ride Height → Increase ground clearance and fine-tune the X5's stance for larger tires, trail use, and additional off-road capability.

• Inverted Shock Design → Increased strength and rigidity for controlling the weight of the X5 over rough terrain and repeated impacts.

• Bypass Piston Valving → Provides compliance over smaller bumps and washboard surfaces while maintaining control through larger suspension movements and impacts.

• 1-Way Rebound Adjustment → Allows you to fine-tune suspension response for vehicle weight, terrain, accessories, and driving preference.

• Rebuildable Construction → Fully serviceable dampers designed for long-term ownership and demanding use.

• Electroplated Shock Bodies → Provides long-term corrosion resistance for suspension components regularly exposed to dirt, water, road salt, and harsh environments.

Who Is the GR40R For?

• Off-Road X5 Builds → For owners turning the E70 into a genuinely capable off-road SUV rather than simply changing its appearance.

• Overland Builds → Ideal for X5s carrying additional cargo, recovery equipment, camping gear, larger tires, and other overland equipment.

• High-Speed Dirt & Gravel Driving → External reservoirs help maintain consistent damping during extended driving on gravel roads, washboard surfaces, and rough terrain.

• Adventure & Daily-Driven Builds → Designed for X5 owners who still drive their vehicle regularly but want significantly more capability when the pavement ends.

Why GR40R for the E70 X5?

• External reservoirs provide additional oil capacity and improved heat management for the X5's substantial vehicle weight.

• Adjustable ride height provides up to 2 inches of lift for improved ground clearance and off-road capability.

• Inverted dampers provide the strength and rigidity needed for demanding SUV applications.

• Adjustable rebound allows the suspension to be tuned around vehicle weight, accessories, terrain, and driver preference.

• Rebuildable construction provides a long-term suspension solution that can be serviced rather than simply replaced.

• The GR40R delivers the additional heat capacity and consistency needed when an E70 X5 is regularly pushed beyond normal street use.

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