Conv Front Spring 5in x 9.5in x 550

The Conv Front Spring 5in x 9.5in x 550 from Integra Shocks is a heavy-duty conventional coil spring engineered for vehicles requiring increased load capacity and ride quality during suspension modifications. Whether you're building a lifted truck, upgrading factory suspension geometry, or tuning your vehicle for towing and hauling, this front spring delivers the stiffness and durability needed for reliable performance. Conventional springs like this one remain a trusted choice among mechanics and enthusiasts who prioritize predictable handling characteristics and straightforward installation over aftermarket complexity.

This spring features a 550 lb/in rate—a specification that indicates moderate stiffness suitable for balanced suspension tuning without sacrificing comfort on street applications. The 5-inch free length and 9.5-inch overall compressed dimension are designed to integrate with independent rear suspension (IRS) geometries, making it ideal for vehicles requiring custom spring rates during lowering or leveling work. At 6.5 lbs, the spring is constructed from high-carbon steel with proper tempering to withstand repeated compression cycles, ensuring longevity under both daily driving and modified suspension loads.

Mechanics and fabricators working on independent rear suspension systems—particularly those upgrading classic platforms or tuning modern vehicles—will appreciate the predictable rate and compact profile of this conventional spring. Proper installation requires correct seating on spring perches and verification of suspension geometry after fitment; confirm OEM or target ride height before ordering to ensure compatibility with your specific vehicle's mounting points and control arm angles. This spring works best when paired with appropriate damping components to optimize overall suspension performance.