Hyperco 1.45″ I.D. x 4.4″ Free Length Formula SAE Coilover Spring, 150-400 lbs/in Rate (Choose Rate)

Hyperco 1.45″ I.D. x 4.4″ Free Length Formula SAE Coilover Springs

Hyperco high-performance Formula SAE (FS series) coilover springs in a 1.45″ (36.8 mm) inside diameter and 4.4″ (111.8 mm) free length — a compact, lightweight spring designed for the tight packaging of Formula SAE and other small-bore coilover applications. Like all Hyperco springs, they are precision cold-wound from high-tensile chrome-silicon wire, heat-treated, preset, and 100% rate-tested, so the printed rate is the rate you get. Made in the USA.
Select your spring rate from the drop-down. Every spring in this listing shares the same 1.45″ I.D. and 4.4″ free length; only the rate and its associated deflection, load and coil dimensions change.

Rate Chart

Specifications

• Inside diameter: 1.45″ (36.8 mm)
• Free length: 4.4″ (111.8 mm)
• Series: FS (Formula SAE)
• Rate range: 150–400 lbs/in
• Finish: Blue powder-coat
• 100% rate-tested, made in the USA
• Sold individually.