Hyperco 3″ I.D. x 6″ Free Length Coilover Spring, E Series, 150-450 lbs/in Rate (Choose Rate)
$108.00
Hyperco 3″ I.D. x 6″ Free Length Coilover Springs — E Series

Hyperco high-performance E-series coilover springs in a 3″ (76.2 mm) inside diameter and 6″ (152.4 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, and made in the USA.
Select your spring rate from the drop-down. Every spring in this listing shares the same 3″ I.D. and 6″ 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 |
|---|---|---|---|---|---|
| 186E0150 | 150 | 4.487″ (114.0 mm) | 673 | 3.761″ (95.5 mm) | 1.513″ (38.4 mm) |
| 186E0200 | 200 | 4.205″ (106.8 mm) | 840 | 3.8″ (96.5 mm) | 1.795″ (45.6 mm) |
| 186E0250 | 250 | 4.304″ (109.3 mm) | 1075 | 3.891″ (98.8 mm) | 1.686″ (42.8 mm) |
| 186E0300 | 300 | 4.212″ (107.0 mm) | 1264 | 3.862″ (98.1 mm) | 1.788″ (45.4 mm) |
| 186E0350 | 350 | 4.046″ (102.8 mm) | 1416 | 3.908″ (99.3 mm) | 1.954″ (49.6 mm) |
| 186E0400 | 400 | 4.103″ (104.2 mm) | 1641 | 3.924″ (99.7 mm) | 1.897″ (48.2 mm) |
| 186E0450 | 450 | 4″ (101.6 mm) | 1800 | 3.958″ (100.5 mm) | 2″ (50.8 mm) |
Specifications
- Inside diameter: 3″ (76.2 mm)
- Free length: 6″ (152.4 mm)
- Series: E
- Rate range: 150–450 lbs/in
- 100% rate-tested, made in the USA
- Sold individually.








