Coil-Spring 20in x 5in x 100lb 2.5in ID

The Coil-Spring 20in x 5in x 100lb 2.5in ID by SWIFT SPRINGS is a precision-engineered suspension component designed for vehicle enthusiasts and mechanics seeking reliable load support and ride quality tuning. This coil spring serves as a critical foundation for custom suspension builds, lowering kits, and performance upgrades where factory springs no longer meet your setup's demands. Whether you're building a track-focused setup, upgrading a daily driver, or restoring a classic vehicle with modern handling characteristics, this spring delivers consistent performance across a wide range of applications and driving conditions.

With a 100-pound spring rate and a 2.5-inch inner diameter, this coil spring provides a balanced compromise between ride comfort and handling response—ideal for street-driven vehicles and mild performance applications where maintaining a functional ride height is essential. The 20-inch length and 5-inch free height allow for integration into both OEM-style and custom suspension geometries without requiring extensive frame modifications. SWIFT SPRINGS' manufacturing standards ensure consistent wire diameter and coil spacing, which directly translates to predictable load curves and reduced likelihood of coil binding or premature sagging during extended use or high-load scenarios.

This spring is ideal for builders working on independent front or rear suspensions, adjustable coilover systems, and custom suspension frames where OEM springs are unavailable or inadequate. Mechanics and fabricators frequently pair springs of this rate with aftermarket dampers to achieve tunable handling without sacrificing everyday usability. Installation requires proper spring compressors and alignment checks post-installation; verify compatibility with your vehicle's existing suspension mounts and ensure adequate clearance within wheel wells before assembly to avoid rubbing or bottoming issues during full compression.