Flatout Suspension GR40R Heavy-Duty Coilover System with External Reservoirs

The Flatout Suspension GR40R is engineered for rigs that demand endurance, strength, and control over rough terrain. Built for serious off-roaders, overland explorers, and adventure rigs, the GR40R enhances the proven rally-strength foundation of the GR40 by integrating external reservoirs on all four shocks. This design dramatically increases oil capacity, keeping temperatures low and performance consistent over long, demanding routes. Whether hauling gear, towing, or tackling harsh trails, the GR40R delivers reliability and handling that wont quit.

Who Is the GR40R For?
Overlanders & Expedition Builds Ideal for rigs equipped with rooftop tents, full gear, or tow setups.
Hardcore Off-Roaders Delivers strength and cooling performance for demanding trail and rock conditions.
Heavy-Build Vehicles Supports added weight from winches, bumpers, recovery gear, and spares.
Adventure Enthusiasts For those seeking a rugged, fade-free suspension that lasts through every adventure.

DETAILS:

• 03 adjustable ride height for custom clearance and larger tires

• External reservoirs on all four shocks for improved cooling and fade resistance

• Inverted heavy-duty shock design for proven rally-level durability

• Bypass piston valving smooths washboard surfaces and absorbs big hits

• 1-way rebound adjustment for tuning between comfort and control

• Overload-capable springs with upgrade options for heavy-duty builds

• Fully rebuildable design for long-term expedition and off-road use

• Electroplated shock bodies with 710 years of corrosion resistance

• Fade-free damping from external reservoir construction

• Handles heavy loads and extended travel without sag or instability

• Adjustable rebound for on-road comfort and off-road control

• Long-lasting, corrosion-resistant, and fully serviceable design

• Perfect suspension upgrade for explorers and weekend adventurers alike