Conv Rear Spring 5in x 16in x 225#

The Conv Rear Spring 5in x 16in x 225# from AFCO RACING PRODUCTS is a precision-engineered coil spring designed for high-performance automotive suspension tuning and racing applications. Built for enthusiasts and professional mechanics who demand exact spring rates and consistent performance, this conventional rear spring delivers the predictable load characteristics essential for fine-tuning vehicle dynamics. Whether you're building a dedicated track machine, optimizing weight transfer for road racing, or dialing in a street performance build, this spring provides the foundation for responsive, controlled suspension behavior that transforms how your vehicle handles under load.

With a spring rate of 225 pounds per inch, this coil spring is engineered to support moderate lateral forces and body roll while maintaining linear compression characteristics across its 5-inch free length. The 16-inch compressed length specification indicates compatibility with modern coil-over or traditional rear suspension systems requiring precise vertical travel. AFCO's manufacturing standards ensure consistent wire diameter and coil pitch, eliminating dead spots and delivering predictable load curves essential for lap-time consistency and repeatable suspension geometry through corners. The 8.5-pound weight reflects the robust steel construction necessary for durability under sustained racing conditions and shock cycles.

This rear spring is ideal for single-purpose race cars, autocross competitors, and street machines where rear-end stiffness is prioritized to balance understeer and oversteer characteristics. Mechanics and builders often pair 225# rear springs with complementary front rates to establish neutral handling bias or aggressive trail-braking setups depending on driving style and track surface. Installation requires proper suspension geometry verification and alignment checks to ensure spring perches remain parallel and suspension travel is symmetrical. Confirm mounting point compatibility with your specific suspension platform before ordering, as AFCO springs are engineered for precise OEM and aftermarket suspension architectures.