Coilover Spring 16in x 3.5in x 125lb

The SWIFT SPRINGS Coilover Spring 16in x 3.5in x 125lb is a precision-engineered coil-over suspension component designed for custom suspension builds, drag racing platforms, and high-performance off-road applications. This bulletproof-rated spring delivers consistent spring rates for vehicles requiring tuned vertical load handling and precise ride height control. Whether you're building a dedicated track car, competition suspension system, or upgrading a lifted platform, this coilover spring provides the engineering foundation needed for predictable suspension response.

Manufactured from high-quality steel and finished with a copper powder coat for enhanced corrosion resistance and longevity, this spring features a 16-inch working length and 3.5-inch inside diameter geometry optimized for coilover shock absorber installations. The 125 lb/in spring rate provides a moderately firm rate suitable for street-performance and competition vehicles where driver feedback and load control are priorities. The copper powder coat not only protects against rust and road salt but also maintains consistent appearance on exposed suspension components, critical for both functional durability and aesthetic integrity in visible suspension builds.

This coilover spring is ideal for suspension builders, race teams, and performance enthusiasts installing coilover shock assemblies on custom chassis or competitive vehicles. The 125 lb/in rate pairs effectively with adjustable dampers for fine-tuning ride comfort and handling balance across various weight distributions and track conditions. Installation requires proper spring compressor tools and shock absorber assembly equipment; always verify spring length, inside diameter, and rate compatibility with your specific coilover kit before purchase to ensure optimal suspension geometry and ride quality.