Coilover Spring 14in x 3.0in x 100lb

The SWIFT SPRINGS Coilover Spring 14in x 3.0in x 100lb (SKU: SWI140-300-100) is a professional-grade coil-over suspension component engineered for builders and enthusiasts who demand precise suspension tuning. This 14-inch coil-over spring serves as a core element in custom suspension systems, enabling controlled ride height adjustment and geometry optimization for street, track, and show vehicles. Whether you're building a lowered street car, developing a performance suspension package, or fine-tuning chassis dynamics, this spring rate provides the stiffness necessary for responsive handling without sacrificing driver comfort on daily-driven applications.

Manufactured by SWIFT SPRINGS with a 100 lb/in spring rate and 3-inch inner diameter, this coil-over spring features a black powder-coated steel construction that resists corrosion and delivers durability in demanding environments. The 14-inch length accommodates mid-travel suspension designs common in coil-over kits, while the 100 lb/in rate balances stiffness with compliance—ideal for vehicles in the 2,500–3,500 lb weight range or as a secondary spring in tandem setups. The steel composition and industrial-grade finish ensure consistent performance across temperature extremes, maintaining spring rate accuracy under repeated compression cycles that typical street and weekend track use demand.

This spring is best suited for mechanics and builders installing full coil-over suspension systems, adjustable damper kits, or OEM-to-coilover conversions. It pairs seamlessly with adjustable shock bodies and custom suspension arms, allowing fine-tuning of preload, ride height, and spring rate to match specific vehicle weight and performance goals. Installation requires proper spring compressors and alignment equipment; work with suspension specialists or experienced builders familiar with coil-over geometry to ensure correct fitment and optimal chassis behavior. Check vehicle specifications and suspension package compatibility before ordering to confirm this 14-inch, 100 lb/in rate suits your application.