SKU: SWI130-500-200TH
MPN: 130-500-200 TH
The Coil Spring Conv Rear 13in x 5in x 200lb from SWIFT SPRINGS is a precision-engineered suspension component designed for serious automotive enthusiasts and mechanics building custom rear suspension systems. This coil spring serves as the foundation for controlled weight transfer, ride height adjustment, and load management in performance or off-road applications. Whether you're tuning a drift car, building a lowered street machine, or engineering a track-focused suspension geometry, this converter-style rear spring delivers the stiffness and travel characteristics needed to match your platform's dynamics.
Built to SWIFT SPRINGS' exacting standards, this coil spring features a 13-inch free length and 5-inch outer diameter, making it compatible with most modern coilover kits and custom suspension frames. The 200-pound spring rate delivers a linear force curve ideal for vehicles in the 2,500–3,500 lb range per corner, ensuring predictable chassis behavior under acceleration, braking, and cornering loads. The converter configuration allows for flexible mounting options when integrating into leaf-spring or traditional multi-link rear end conversions, while the compact 5.5 x 5.4 x 14.6-inch package ensures fitment in tight engine bays and suspension towers. Weighing 12.67 lbs, this spring strikes the balance between material durability and unsprung mass reduction.
Mechanics and fabricators favor this spring for restomod projects, Japanese import tuning, and independent rear suspension retrofits where OEM springs no longer meet performance goals. The 200lb rate pairs well with adjustable dampers and sway bar upgrades to dial in corner weights and anti-squat geometry. Installation requires proper suspension alignment and ride-height measurement post-setup; confirm spring seat compatibility with your control arms, towers, or coilover body before ordering. Pair this rear spring with matching front rates and quality shocks to achieve balanced platform dynamics and predictable on-track or street performance.
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