Conv Rear Spring 5in x 11in x 100#

The Conv Rear Spring 5in x 11in x 100# by AFCO RACING PRODUCTS is a purpose-built coil spring designed for serious bracket racing, street performance, and dedicated track vehicles. This rear spring is engineered for drivers who demand precision suspension geometry and consistent weight transfer during hard acceleration and cornering. Whether you're building a drag car, autocross competitor, or a high-performance street machine, this AFCO spring delivers the controlled chassis dynamics necessary for repeatable quarter-mile times and improved handling characteristics.

Measuring 5 inches in free length, this 100-pound spring rate provides firm resistance to chassis squat and body roll while maintaining adequate compliance for bump absorption. AFCO's racing-grade construction ensures consistent spring rates across the entire suspension travel, eliminating the rate variation common in street springs. The compact design reflects AFCO's use of high-tensile alloy steel and optimized coil geometry, reducing unsprung mass for improved tire contact and reduced rotational inertia.

Racers building independent rear suspension platforms or upgrading traditional leaf-spring cars to modern coil-over systems will benefit from this spring's predictable rate characteristics. Its 5-inch coil diameter balances lateral stiffness with vertical compliance, a critical factor when tuning rear end behavior in dedicated competition vehicles. This spring is ideal for those looking to enhance their vehicle's performance on the track.