SKU: SWI160-300-125BP
MPN: 160-300-125 BP
The SWIFT SPRINGS Coilover Spring 16in x 3.0in x 125lb (part number 160-300-125 BP) is a high-performance coil-over suspension spring engineered for custom suspension tuning and off-road vehicle applications. This individual spring delivers precise load control through its 125 lb/in spring rate, making it a core component for builders seeking repeatable, predictable suspension geometry in competition and field-use vehicles.
Measuring 16 inches in length with a 3-inch inside diameter, this steel coil spring is finished in copper powder coat for enhanced corrosion resistance in harsh environments—particularly valuable for vehicles exposed to salt spray, mud, and moisture-heavy conditions. The 125 lb/in rate strikes a balance between ride compliance and load-carrying capability, suitable for moderate to aggressive suspension setups without excessive stiffness. Spring rate selection is critical to suspension tuning; a stiffer spring rate reduces body roll, improves handling response, and supports heavier payloads, while maintaining adequate wheel travel for uneven terrain.
This coilover spring is designed for vehicle builders, off-road enthusiasts, and suspension engineers who require OEM-specification or custom-matched spring rates for lift kits, performance suspensions, and recovery vehicle builds. Proper spring rate matching to vehicle weight, intended load, and ride height is essential; selecting the correct rate ensures predictable handling, minimizes bottoming risk, and extends suspension component life. Individual springs allow precise staged tuning—adjust front and rear rates independently to dial in platform-specific handling characteristics.
Coil-over suspension systems remain the industry standard for adjustable-height platforms. The 16-inch length and 3-inch bore accommodate most coilover shocks and struts; verify shock compatibility with bore diameter and installed height before ordering. Spring rate is measured in pounds per inch of compression—this 125 lb/in spring compresses one inch under 125 pounds of force, a mid-range rate common in truck and SUV applications.
Sold as a single spring; purchase quantity matches the number of suspension corners to be upgraded.
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