Ferrea 1.225in to 1.570in Dia 1.04/1.56 OD 0.74/1.145 ID Dual w/Damper Valve Spring - Set of 16

Ferrea is well-known for making strong valvetrain components for performance applications. This set of 16 dual valve springs with dampers is a prime example of their commitment to building parts that can handle demanding engine conditions. These springs are designed to manage the forces at play in high-RPM, high-lift camshafts, helping to ensure your valves close reliably and prevent issues like valve float.

Each spring in this set features a dual-rate design, meaning it has two different spring rates within a single unit. This allows for a softer initial spring rate to help reduce wear on the valvetrain during normal operation, and a stiffer rate as the spring compresses to handle the higher forces encountered at higher engine speeds or with aggressive camshaft profiles. The integrated damper helps to control harmonic vibrations within the spring, further improving stability and preventing resonance that could lead to premature failure or inconsistent valve control. The springs measure from 1.225 inches to 1.570 inches in diameter, with outer diameters of 1.04 to 1.56 inches and inner diameters of 0.74 to 1.145 inches, offering a versatile range for various performance engine builds.

This set includes 16 springs, enough for a typical V8 engine. When installing these, it's important to follow the manufacturer's recommended installation procedures and ensure your retainers and valve seals are in good condition. Proper installation is key to unlocking the full potential and reliability of these well-built components.