Hyperco 2.25″ I.D. x 7″ Free Length Coilover Spring, 250-1500lbs/in Rate (Choose Rate)
$101.65
Hyperco 2.25″ I.D. x 7″ Free Length Coilover Springs
Hyperco high-performance coil-over springs, or “Hypercoils” are the benchmark in motorsport suspension. These 2.25″ (57.1 mm) inside diameter, 7″ (177.8 mm) free length springs (Hyperco A series) are precision CNC-wound from premium high-tensile alloy steel and 100% load-tested for accurate, repeatable spring rates that hold true throughout their travel — so the rate on the label is the rate on the car.
Compared to conventional suspension springs, Hyperco coil-over springs provide more usable deflection and weigh less, reducing unsprung and overall vehicle weight. The 2.25″ I.D. suits coilover kits and threaded-body shocks built around a 2.25″ I.D. spring seat (verify your perch/slider).
Choose Your Spring Rate
Select your required spring rate from the dropdown. This 2.25″ x 7″ family is offered in rates from 250 lbs/in (44 N/mm) up through 1500 lbs/in (263 N/mm). Use the rate specified by your chassis setup sheet or suspension tuner. Each spring is sold individually; most applications use them in matched pairs.
Specifications by Rate (Imperial & Metric)
All springs: 2.25″ (57.1 mm) I.D., 7″ (177.8 mm) free length, A series, blue powder-coat finish. Deflection, max load, outside diameter, and solid height vary by rate:
| SKU | Rate (lbs/in) | Rate (N/mm) | Deflection (in) | Deflection (mm) | Max Load (lb) | Max Load (kg) | O.D. (in) | O.D. (mm) | Solid Ht. (in) | Solid Ht. (mm) |
|---|---|---|---|---|---|---|---|---|---|---|
| 187A0250 | 250 | 43.8 | 4.703 | 119.5 | 1176 | 533 | 3.02 | 76.7 | 2.297 | 58.3 |
| 187A0275 | 275 | 48.2 | 4.681 | 118.9 | 1287 | 584 | 3.23 | 82.0 | 2.319 | 58.9 |
| 187A0300 | 300 | 52.5 | 4.575 | 116.2 | 1372 | 622 | 3.097 | 78.7 | 2.425 | 61.6 |
| 187A0325 | 325 | 56.9 | 4.575 | 116.2 | 1487 | 674 | 3.265 | 82.9 | 2.425 | 61.6 |
| 187A0350 | 350 | 61.3 | 4.533 | 115.1 | 1586 | 719 | 3.255 | 82.7 | 2.467 | 62.7 |
| 187A0375 | 375 | 65.7 | 4.358 | 110.7 | 1634 | 741 | 3.112 | 79.0 | 2.642 | 67.1 |
| 187A0400 | 400 | 70.1 | 4.375 | 111.1 | 1750 | 794 | 3.15 | 80.0 | 2.625 | 66.7 |
| 187A0425 | 425 | 74.4 | 4.325 | 109.9 | 1838 | 834 | 3.172 | 80.6 | 2.675 | 67.9 |
| 187A0450 | 450 | 78.8 | 4.224 | 107.3 | 1901 | 862 | 3.279 | 83.3 | 2.776 | 70.5 |
| 187A0475 | 475 | 83.2 | 4.223 | 107.3 | 2006 | 910 | 3.223 | 81.9 | 2.777 | 70.5 |
| 187A0500 | 500 | 87.6 | 4.235 | 107.6 | 2118 | 961 | 3.277 | 83.2 | 2.765 | 70.2 |
| 187A0550 | 550 | 96.3 | 4.198 | 106.6 | 2309 | 1047 | 3.387 | 86.0 | 2.802 | 71.2 |
| 187A0600 | 600 | 105.1 | 3.996 | 101.5 | 2398 | 1088 | 3.28 | 83.3 | 3.004 | 76.3 |
| 187A0650 | 650 | 113.8 | 3.871 | 98.3 | 2516 | 1141 | 3.353 | 85.2 | 3.129 | 79.5 |
| 187A0700 | 700 | 122.6 | 3.86 | 98.0 | 2702 | 1226 | 3.381 | 85.9 | 3.14 | 79.8 |
| 187A0750 | 750 | 131.3 | 3.8 | 96.5 | 2849 | 1292 | 3.398 | 86.3 | 3.2 | 81.3 |
| 187A0800 | 800 | 140.1 | 3.746 | 95.1 | 2997 | 1359 | 3.408 | 86.6 | 3.254 | 82.7 |
| 187A0850 | 850 | 148.9 | 3.81 | 96.8 | 3238 | 1469 | 3.467 | 88.1 | 3.19 | 81.0 |
| 187A0900 | 900 | 157.6 | 3.777 | 95.9 | 3399 | 1542 | 3.517 | 89.3 | 3.223 | 81.9 |
| 187A0950 | 950 | 166.4 | 3.496 | 88.8 | 3321 | 1506 | 3.364 | 85.4 | 3.504 | 89.0 |
| 187A1000 | 1000 | 175.1 | 3.638 | 92.4 | 3638 | 1650 | 3.447 | 87.6 | 3.362 | 85.4 |
| 187A1100 | 1100 | 192.6 | 3.471 | 88.2 | 3818 | 1732 | 3.4 | 86.4 | 3.529 | 89.6 |
| 187A1200 | 1200 | 210.2 | 3.496 | 88.8 | 4195 | 1903 | 3.526 | 89.6 | 3.504 | 89.0 |
| 187A1300 | 1300 | 227.7 | 3.165 | 80.4 | 4114 | 1866 | 3.454 | 87.7 | 3.835 | 97.4 |
| 187A1400 | 1400 | 245.2 | 3.125 | 79.4 | 4375 | 1984 | 3.488 | 88.6 | 3.875 | 98.4 |
| 187A1500 | 1500 | 262.7 | 3.185 | 80.9 | 4777 | 2167 | 3.488 | 88.6 | 3.815 | 96.9 |
Metric values are converted from Hyperco’s published imperial specifications (1 lb/in = 0.175 N/mm; 1 in = 25.4 mm; 1 lb = 0.454 kg) and rounded.
Features
- Nominal 2.25″ (57.1 mm) inside diameter, 7″ (177.8 mm) free length
- Hyperco A series, blue powder-coat finish
- Precision CNC-wound, 100% rate-tested and validated
- High-tensile alloy steel; corrosion-resistant finish
- Lifetime warranty against loss of free height beyond Hyperco spec
- Proudly made in the USA — trusted in NASCAR, IndyCar, and pro road racing
Need a rate not shown, a different free length or I.D.? Contact us — we can get the full Hyperco range.
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