Conv Rear Spring 5in x 11in x 250#

The Conv Rear Spring 5in x 11in x 250# from AFCO Racing Products is a purpose-built coil spring engineered for high-performance suspension tuning in drag racing, road course, and street performance applications. This conventional rear spring delivers consistent spring rates that allow chassis builders and suspension technicians to dial in precise weight transfer characteristics and rear axle compliance. Whether you're fine-tuning a dedicated track car or optimizing a weekend warrior, this spring addresses the critical need for adjustable, reliable suspension geometry that responds predictably under acceleration, braking, and cornering loads.

With a 250-pound spring rate and 5-inch free length, the Conv Rear Spring 5in x 11in x 250# provides moderate compliance that balances chassis stiffness with driver comfort and traction control. The 11-inch body length accommodates most rear suspension packages, while the consistent coil design ensures linear rate characteristics across the suspension travel range—eliminating dead spots and unpredictable behavior that plague inferior or mismatched springs. AFCO's manufacturing standards guarantee shot-peened coils that resist fatigue failure and maintain rate consistency over thousands of heat cycles, critical for both street and racing duty where spring relaxation kills handling feel.

This 250# spring excels in lightweight or mid-weight vehicles running independent or multi-link rear suspensions, particularly those targeting street-strip versatility or amateur road racing. Installation pairs cleanly with coil-over housings, traditional shock mounts, or adjustable suspension platforms where spring rate selection drives dynamic behavior. Technicians appreciate the proven AFCO lineage—this spring integrates seamlessly into contemporary and vintage platforms alike, making it ideal for restomod builds, LS swaps, and modern chassis conversions where OEM springs fall short of performance demands.