Coil-Over Hot Rod Spring 7in x 300#

The AFCO Racing Products Coil-Over Hot Rod Spring 7in x 300# is engineered for serious hot rod builders and street machine enthusiasts who demand precise suspension geometry and repeatable handling characteristics. This coil-over spring serves as the foundation for modern coil-over suspension systems, replacing traditional leaf springs with adjustable damping and spring rate control. Whether you're building a classic hot rod, street rod, or high-performance vintage car, this spring rate delivers the stiffness needed for controlled weight transfer and consistent ride height regardless of load conditions.

Built by AFCO—a trusted manufacturer of racing suspensions for decades—this coil-over spring features a 7-inch free length with a 300 pound-per-inch spring rate and a 2.5-inch inner diameter designed to mate with standard coil-over shock bodies. The chrome finish resists corrosion and provides a polished appearance visible through custom engine bays and suspension components. The 300# rate sits in the sweet spot for single-vehicle weight distributions typical of hot rods and street machines, offering enough compliance for street driving while maintaining the anti-squat and anti-dive geometry that separates a well-tuned suspension from a loose, wallowing chassis.

Mechanics and fabricators working on independent front suspensions, custom A-arm builds, or retrofit coil-over installations will appreciate the precise spring rate consistency that AFCO delivers. The 7-inch length accommodates most aftermarket coil-over shock packages commonly used in hot rod applications, and the 2.5-inch bore ensures compatibility with quality coil-over kits from leading suspension manufacturers. Installation requires matching the spring to your vehicle's total weight, desired ride height, and shock travel—consulting suspension geometry data or a qualified fabricator ensures optimal performance and safety on both street and strip.