Coil Spring - 2.5in x 7 250#

The QA1 Coil Spring – 2.5in x 7 250# is a precision high-travel coil-over suspension component engineered for performance-oriented vehicles that demand superior ride control and load support. Designed for builders and enthusiasts who require consistent spring rates across suspension geometry changes, this coil spring delivers the predictable force curves necessary for both street and competition applications where traditional leaf springs fall short.

Built from high-quality steel and finished in durable silver powder coat, this spring features a 2.5-inch inner diameter and 7-inch free length with a 250 lb/in spring rate—meaning it will compress one inch under a 250-pound load. The high-travel design accommodates extended suspension articulation without binding, making it ideal for custom chassis setups, adjustable suspension systems, and applications requiring greater vertical wheel movement. The compact 4.4 x 4.3 x 9.8-inch envelope and light 1.8-pound weight ensure minimal unsprung mass while maintaining structural integrity under demanding conditions.

This spring excels in coil-over installations where precision tuning of suspension response is critical. Whether upgrading a drag racing platform, lowrider suspension, or performance street machine, the 250# rate provides a stiff yet manageable spring constant suitable for medium to heavier vehicle weights and motorsports applications. Installation pairs with compatible shock absorbers and mounting hardware; always verify bore size compatibility and total suspension geometry before final assembly to ensure optimal performance and safety.