Coilover Spring 7in x 2.5in 500LB Barrel

The Coilover Spring 7in x 2.5in 500LB Barrel from SWIFT SPRINGS is engineered for serious suspension builders and performance-oriented mechanics seeking precision damping control. This coilover spring sits at the heart of any adjustable suspension system, providing the load-bearing foundation that allows your chassis to dial in ride height, cornering stiffness, and weight transfer characteristics with repeatable accuracy. Whether you're building a track car, lowered street machine, or competition vehicle, a properly matched spring rate is non-negotiable for handling balance and safety.

This barrel-style coilover spring features a 500-pound linear spring rate, meaning it exerts 500 pounds of resistive force per inch of compression—critical data for calculating suspension geometry and predicting how your vehicle will squat under acceleration or dive under braking. The 7-inch free length and 2.5-inch barrel diameter represent a compact, direct-mount design compatible with most modern coilover kits and adjustable damper bodies, maximizing packaging flexibility in tight engine bays or custom suspension applications. The progressive or linear rate characteristic ensures consistent spring behavior across the vehicle's entire suspension travel, eliminating unpredictable mid-range deflection that compromises corner entry and exit precision.

Professional fabricators and experienced tuners select 500LB springs for lightweight to mid-weight vehicles—typically single-seat racers, drift platforms, or street cars in the 2,500–3,500-pound range—where responsive geometry and minimal compliance deliver measurable lap-time improvements. Before installation, verify spring perch height, damper body compatibility, and overall vehicle weight distribution to ensure this spring rate complements your damper valving and anti-roll bar setup. Pairing this SWIFT SPRINGS coilover spring with quality dampers and precision alignment unlocks the suspension tuning capability that separates competitive builds from merely modified machines.