Coilover Spring 8in x 2.5in x 525lb

The SWIFT SPRINGS Coilover Spring 8in x 2.5in x 525lb is a premium coil-over suspension component engineered for performance vehicles and custom automotive applications. Designed for builders and enthusiasts who demand precision handling and adjustable ride height, this coilover spring delivers the stiffness and durability required in high-performance suspension systems. Whether you're building a track car, lowered street vehicle, or off-road platform, this spring provides the foundation for controlled damping and consistent load support across a wide range of driving conditions.

Manufactured from high-grade steel with a black powder coat finish, the coilover spring features an 8-inch length and 2.5-inch inner diameter (ID), optimized for integration with coilover shock absorber assemblies. The 525 lb/in spring rate—a moderate-to-firm stiffness rating—balances responsive handling with acceptable ride comfort, making it suitable for street-oriented setups and moderate track use. The powder coat provides corrosion resistance and durability in harsh road and weather environments, while the precision-wound construction ensures consistent preload and minimal lateral deflection during compression and extension cycles.

This spring is ideal for vehicle owners upgrading from factory suspension or tuning existing coilover kits to fine-tune chassis dynamics. The 525 lb/in rate works well with mid-range damper valving and suits vehicles in the 2,500–4,000 lb weight range when paired with appropriate dampening. Proper installation requires removing the coilover assembly, compressing the existing spring, and threading the new spring onto the perch; a coilover spring compressor is essential for safe assembly. Verify fitment with your coilover manufacturer's specifications before ordering to ensure compatibility with your shock body diameter and seat design.