Hyperco 3.75″ I.D. x 16″ Free Length Coilover Spring, G Series, 200-400 lbs/in Rate (Choose Rate)
$177.00
Hyperco 3.75″ I.D. x 16″ Free Length Coilover Springs — G Series

Hyperco high-performance G-series coilover springs in a 3.75″ (95.2 mm) inside diameter and 16″ (406.4 mm) free length. Precision cold-wound from high-tensile chrome-silicon wire, heat-treated, preset and 100% rate-tested, so the printed rate is the delivered rate. Lighter weight and more usable deflection than comparable springs, made in the USA.
Select your spring rate from the drop-down. Every spring in this listing shares the same 3.75″ I.D. and 16″ free length; only the rate and its associated deflection, load and coil dimensions change. All dimensions are shown in both inches and millimeters.
Rate Chart
| SKU | Rate (lbs/in) | Max Deflection | Max Load (lb) | Outside Dia. | Solid Height | Color |
|---|---|---|---|---|---|---|
| 1816G0200 | 200 | 11.437″ (290.5 mm) | 2287 | 4.935″ (125.3 mm) | 4.563″ (115.9 mm) | Silver |
| 1816G0250 | 250 | 11.036″ (280.3 mm) | 2759 | 5.102″ (129.6 mm) | 4.964″ (126.1 mm) | Silver |
| 1816G0300 | 300 | 10.461″ (265.7 mm) | 3138 | 5.029″ (127.7 mm) | 5.539″ (140.7 mm) | Silver |
| 1816G0350 | 350 | 10.117″ (257.0 mm) | 3541 | 5.197″ (132.0 mm) | 5.883″ (149.4 mm) | Silver |
| 1816G0400 | 400 | 11.527″ (292.8 mm) | 4190 | 5.106″ (129.7 mm) | 5.525″ (140.3 mm) | Silver |
Specifications
- Inside diameter: 3.75″ (95.2 mm)
- Free length: 16″ (406.4 mm)
- Series: G
- Rate range: 200–400 lbs/in
- Finish: Silver powder-coat
- 100% rate-tested, made in the USA
- Sold individually.






