Coilover Spring 4.5in x 1.625in x 90lb QM

The SWIFT SPRINGS Coilover Spring 4.5in x 1.625in x 90lb QM is a precision-engineered suspension component designed specifically for quarter midget racing applications. This coil spring delivers the responsive handling and consistent load support required in competitive quarter midget platforms, where suspension tuning directly impacts lap times and vehicle stability. Quarter midget racers depend on high-quality springs to maintain predictable spring rates under repeated thermal and mechanical cycles, making this component essential for drivers seeking competitive advantage on the track.

Built from high-tensile steel and finished with a durable copper powder coat, the Coilover Spring 4.5in x 1.625in x 90lb QM provides a 90 lb/in spring rate that maintains consistent performance across suspension travel. The 4.5-inch length and 1.625-inch inner diameter are optimized for quarter midget suspension geometry, ensuring proper fitment and load distribution. The copper powder coating protects against corrosion while withstanding the demanding conditions of motorsport use, preserving spring rate accuracy and longevity through multiple racing seasons.

Quarter midget competitors and chassis builders select this spring when upgrading or replacing worn suspension components to restore original handling characteristics or fine-tune chassis dynamics for specific track conditions. The 90 lb/in rate sits in the mid-range for quarter midget applications, providing versatility across light to moderate track surfaces. Proper installation requires verification of correct ID and length against your vehicle's coilover setup; this spring is sold individually and may be used as a single replacement or as part of a complete suspension refresh for optimal performance.