Coilover Spring 10in x 2.5in x 125lb

The Coilover Spring 10in x 2.5in x 125lb by Swift Springs is an essential suspension upgrade for automotive enthusiasts and tuners building a truly dialed-in chassis. Whether you're lowering a street car, setting up a track vehicle, or fine-tuning ride height for performance driving, this coilover spring delivers the predictable, consistent spring rate needed to control body roll, improve cornering stability, and sharpen turn-in response.

This 10-inch coilover spring features a 2.5-inch outer diameter and a spring rate of 125 lbs/inch—a mid-range specification ideal for street-performance and light track use where you need progressive damping characteristics without excessive harshness. Built from high-quality alloy steel with precise coil geometry, this spring integrates seamlessly with adjustable coilover dampers and allows you to dial in ride height independently of spring preload, a critical advantage when tuning weight distribution and anti-squat geometry for optimal chassis dynamics.

Mechanics and DIY builders favor Swift Springs for their consistency and durability across hundreds of thousands of miles. The 125 lb/inch rate strikes a balance: stiff enough to minimize suspension squat under acceleration and dive under braking, yet compliant enough to maintain tire contact over imperfect pavement, making it a reliable choice for various applications.