Conventional Spring 9.5in x 5in 475LB

The Conventional Spring 9.5in x 5in 475LB from SWIFT SPRINGS is a high-capacity coil spring engineered for street and mild performance suspension builds where ride quality and load capacity must coexist. Designed for vehicles requiring significant spring rate support without the harshness of ultra-stiff racing setups, this conventional spring suits daily drivers, light tow vehicles, and enthusiasts seeking improved handling without sacrificing comfort. The 475-pound spring rate provides the structural foundation needed to control body roll, dive, and squat while maintaining enough compliance for road imperfections.

SWIFT SPRINGS conventional coils employ proven wire-winding geometry and shot-peened steel construction to resist fatigue and coil bind over thousands of compression cycles. The 9.5-inch free length paired with a 5-inch bore diameter creates a compact, stackable profile ideal for aftermarket suspension geometry modifications where chassis height and spring pocket clearance are critical constraints. At 475 pounds per inch, this spring rate balances vertical stiffness with lateral load transfer control—a sweet spot for street suspension tuning that avoids excessive preload and ride deterioration.

This spring excels in coilover applications, lowering kits, and custom suspension packages where OEM springs deliver inadequate support or excessive compliance under load. Mechanics and suspension builders favor SWIFT SPRINGS for their consistent wind rates and resistance to permanent set, ensuring repeatable performance across installation batches. Verify your vehicle's chassis weight, desired ride height, and complementary damper tuning before selecting this rate; pairing it with appropriate shock absorber valving and bushings maximizes both handling response and drivability. The compact 5.9 x 5.8 x 12.2-inch dimensions ensure hassle-free packaging in most coilover housings and aftermarket suspension frames.