SKU: LANE550-E
MPN: E550-E
The Spring Conv Front 5.5in OD x 9.5in Elite 550lbs coil spring is a precision front suspension component engineered for vehicles requiring controlled, linear spring rates during compression and rebound cycles. Built for automotive enthusiasts and mechanics performing suspension upgrades, this conventional coil spring delivers the consistent load support needed for lowered builds, performance handling, or factory-to-upgraded transitions. Whether you're fine-tuning chassis geometry on a street car or restoring proper ride height after wear, a 550 lb/in spring rate provides the firmness necessary for responsive steering feedback without sacrificing ride quality when properly paired with compatible shocks and struts.
This Elite Series spring features a 5.5-inch outer diameter and 9.5-inch compressed length, manufactured from high-grade steel with a durable silver powder coat finish that resists corrosion and maintains appearance through seasonal exposure. The 550 lb/in spring constant ensures predictable weight distribution under load, critical for maintaining suspension geometry (camber, caster, and toe) within OEM or modified specifications. Conventional coil spring design—as opposed to progressive or variable-rate alternatives—produces a linear force curve, meaning each inch of compression generates the same 550-pound resistance, allowing tuners to calculate ride height changes and suspension preload with precision. At 7.2 pounds per spring, this component is lightweight enough for no-compromise performance applications while retaining the rigidity needed for consistent front-end control.
This spring is ideal for mechanics and enthusiasts upgrading independent double-wishbone or MacPherson strut front suspension systems on sport compacts, drift cars, autocross platforms, and street performance builds where 550 lb/in stiffness aligns with aftermarket coilover kits or custom damper setups. Proper installation requires removal of the factory spring while the suspension is safely compressed—always use a spring compressor tool and verify compatibility with your specific strut or control arm design before purchase. Pairing this spring with quality shocks tuned to its rate will optimize bump absorption, reduce body roll, and sharpen turn-in response across diverse driving conditions.
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