Flatout GR50R Rally Suspension
Flatout Suspension GR50R – Heavy-Duty Inverted Coilovers with External Reservoirs
The Flatout Suspension GR50R is engineered for drivers who need professional-grade suspension strength with straightforward adjustability. Built around massive 50mm inverted shock inserts fitted into 62mm threaded housings, the GR50R delivers unmatched durability and control in both rally competition and hardcore off-road use.
By combining oversized construction with external reservoirs on all four shocks, the GR50R dramatically increases oil capacity, keeping dampers cooler for longer and eliminating fade during heavy use. With 1-way rebound adjustment, tuning the suspension to match your driving style or terrain is simple, making it the perfect solution for drivers who want extreme strength and consistency without the complexity of multi-way damping.
Key Features of the GR50R Coilovers
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50mm Inverted Dampers in 62mm Threaded Housings → Oversized design provides maximum rigidity and strength under punishing conditions.
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External Reservoirs (All Four Shocks) → Increased oil volume for cooler operating temps and fade-free endurance.
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0–3” Adjustable Ride Height → Gain clearance for larger tires or dial in stance for rally and off-road builds.
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1-Way Rebound Adjustable → Quick and effective tuning to match surface conditions or load.
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Bypass Piston Valving → Smooths out small chatter while controlling big hits and impacts.
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Rebuildable Coilover Design → Serviceable for long-term use in competition or expedition rigs.
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Electroplated Shock Bodies → Corrosion resistance for 7–10 years in harsh environments.
Who Is the GR50R For?
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Rally & Rallycross Drivers → Competitors who need extreme strength and fade-free performance for back-to-back stages.
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Hardcore Off-Roaders → Rigs that crawl rocks, hit desert whoops, and demand maximum suspension strength.
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Overland & Expedition Builds → Fully loaded vehicles carrying rooftop tents, recovery gear, or towing heavy trailers.
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Enthusiasts Moving Up From GR40R → Drivers ready to step into the flagship-level strength of a 50mm/62mm platform.
Why Choose the GR50R?
The GR50R offers the sweet spot of pro-level durability and simple tuning. Its 50mm inverted dampers with 62mm housings make it nearly indestructible, while external reservoirs ensure long-lasting performance under heat and load. The 1-way rebound adjustment gives drivers an easy, effective way to fine-tune handling without the complexity (or cost) of multi-way systems.
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