Conv Front Spring 5.5in x 9.5in x 600#

The Conv Front Spring 5.5in x 9.5in x 600# from AFCO Racing Products is a purpose-built coil spring engineered for high-performance automotive suspension systems. This spring is designed for racers, hot rodders, and serious enthusiasts who demand precise load control and consistent geometry during aggressive driving or competition. Whether you're building a street-legal performance car, a drag strip competitor, or a road course vehicle, a convolution-style front spring delivers the tuning flexibility that separates OEM suspensions from truly dialed-in chassis setups.

The 600-pound rate specification indicates the spring's resistance to compression—requiring 600 pounds of force to compress it one inch. The 5.5-inch coil diameter and 9.5-inch overall length are critical dimensions that determine compatibility with your frame, suspension arms, and shock tower geometry. AFCO's convolution design features a coil-over-compatible profile that accommodates damper packages while maintaining progressive load characteristics throughout the suspension travel. The spring's 9.8-pound weight reflects quality high-carbon steel construction, heat-treated and stress-relieved for durability under repeated load cycles. This rate is ideal for front-end applications requiring moderate spring rates—stiff enough to control body roll and dive without causing excessive harshness or excessive ride height loss on uneven surfaces.

This spring excels in custom coil-over systems, independent front suspension conversions, and performance street cars where factory springs compromise handling. Buyers should verify suspension arm clearances and shock absorber compatibility before installation, as spring seat geometry varies between tube-diameter configurations. Pair this spring with quality dampening components and appropriate anti-roll bars to maximize grip and minimize unwanted suspension movement. Installation typically requires basic suspension tools and knowledge, though professional alignment is essential after any spring change to ensure proper caster, camber, and toe-in geometry.