Conv Rear Spring 5in x 16in x 125

The AFCO Racing Products Conv Rear Spring 5in x 16in x 125 is a conventional coil spring engineered for bracket-style rear suspension systems on racing and performance street vehicles. This 5-inch diameter, 16-inch-long spring delivers consistent load support and predictable spring rates essential for vehicles requiring precise handling geometry and controlled suspension travel. Whether you're building a dedicated track car, restoring a vintage muscle car, or tuning a street performance machine, this AFCO spring provides the foundational compliance necessary for optimal chassis dynamics and driver control across varied driving conditions.

At 5.25 pounds and measuring 5 inches in diameter by 16.25 inches overall length, this spring balances responsiveness with durability through high-quality steel construction designed to resist fatigue under sustained lateral loading and repeated compression cycles. The 125-pound rate (inferred from the model designation) offers moderate stiffness suitable for street-to-strip applications without excessive harshness. AFCO's conventional coil design allows direct bolt-in installation to existing bracket mounts, eliminating the need for custom fabrication while maintaining OEM-compatible envelope dimensions. This makes it ideal for retrofitting performance-grade suspension geometry into vehicles originally equipped with softer springs.

Mechanics and enthusiasts building independent rear suspension systems, four-link assemblies, or traditional bracket-based rear ends will find this spring essential for dialing in ride height, load transfer, and cornering attitude. The 125-pound rate pairs well with front spring rates between 400–600 pounds, allowing balanced weight transfer and predictable oversteer/understeer characteristics. Installation requires basic hand tools and suspension knowledge—verify existing bracket geometry and ensure proper seating before driving. This spring suits vehicles ranging from classic hot rods to modern performance cars seeking improved handling without full independent suspension conversion.