Hyperco 3″ I.D. x 12″ Free Length Coilover Spring, E Series, 100-600 lbs/in Rate (Choose Rate)
$117.00
Hyperco 3″ I.D. x 12″ Free Length Coilover Springs — E Series

Hyperco high-performance E-series coilover springs in a 3″ (76.2 mm) inside diameter and 12″ (304.8 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 12″ 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 |
|---|---|---|---|---|---|
| 1812E0100 | 100 | 8.784″ (223.1 mm) | 878 | 3.8″ (96.5 mm) | 3.216″ (81.7 mm) |
| 1812E0125 | 125 | 8.632″ (219.3 mm) | 1079 | 3.85″ (97.8 mm) | 3.368″ (85.5 mm) |
| 1812E0150 | 150 | 8.711″ (221.3 mm) | 1306 | 3.876″ (98.5 mm) | 3.289″ (83.5 mm) |
| 1812E0175 | 175 | 8.366″ (212.5 mm) | 1464 | 3.924″ (99.7 mm) | 3.634″ (92.3 mm) |
| 1812E0200 | 200 | 8.21″ (208.5 mm) | 1642 | 3.958″ (100.5 mm) | 3.79″ (96.3 mm) |
| 1812E0225 | 225 | 8.469″ (215.1 mm) | 1905 | 4.207″ (106.9 mm) | 3.531″ (89.7 mm) |
| 1812E0250 | 250 | 8.361″ (212.4 mm) | 2090 | 4.191″ (106.5 mm) | 3.639″ (92.4 mm) |
| 1812E0300 | 300 | 8.186″ (207.9 mm) | 2455 | 4.271″ (108.5 mm) | 3.814″ (96.9 mm) |
| 1812E0350 | 350 | 7.527″ (191.2 mm) | 2634 | 4.114″ (104.5 mm) | 4.473″ (113.6 mm) |
| 1812E0400 | 400 | 7.298″ (185.4 mm) | 2919 | 4.15″ (105.4 mm) | 4.703″ (119.5 mm) |
| 1812E0450 | 450 | 7.236″ (183.8 mm) | 3256 | 4.19″ (106.4 mm) | 4.764″ (121.0 mm) |
| 1812E0500 | 500 | 6.864″ (174.3 mm) | 3432 | 4.238″ (107.6 mm) | 5.136″ (130.5 mm) |
| 1812E0600 | 600 | 6.785″ (172.3 mm) | 4071 | 4.29″ (109.0 mm) | 5.215″ (132.5 mm) |
Specifications
- Inside diameter: 3″ (76.2 mm)
- Free length: 12″ (304.8 mm)
- Series: E
- Rate range: 100–600 lbs/in
- 100% rate-tested, made in the USA
- Sold individually.








