Hyperco 2.5″ I.D. x 8″ Free Length Coilover Spring, 100-1200lbs/in Rate (Choose Rate)
$85.99
Hyperco 2.5″ I.D. x 8″ Free Length Coilover Springs
Hyperco high-performance coil-over springs, or “Hypercoils” are the benchmark in motorsport suspension. These 2.5″ (63.5 mm) inside diameter, 8″ (203.2 mm) free length springs (Hyperco B 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 2.5″ I.D. suits coilover kits and threaded-body shocks built around a 2.5″ I.D. spring seat (verify your perch/slider).
Choose Your Spring Rate
Select your required spring rate from the dropdown. This 2.5″ x 8″ family is offered in rates from 100 lbs/in (18 N/mm) up through 1200 lbs/in (210 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: 2.5″ (63.5 mm) I.D., 8″ (203.2 mm) free length, B 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) |
|---|---|---|---|---|---|---|---|---|---|---|
| 188B0100 | 100 | 17.5 | 5.923 | 150.4 | 592 | 269 | 3.384 | 86.0 | 2.077 | 52.8 |
| 188B0125 | 125 | 21.9 | 5.761 | 146.3 | 720 | 327 | 3.406 | 86.5 | 2.239 | 56.9 |
| 188B0150 | 150 | 26.3 | 6.02 | 152.9 | 903 | 410 | 3.718 | 94.4 | 1.98 | 50.3 |
| 188B0175 | 175 | 30.6 | 5.585 | 141.9 | 977 | 443 | 3.402 | 86.4 | 2.415 | 61.3 |
| 188B0200 | 200 | 35.0 | 5.731 | 145.6 | 1146 | 520 | 3.469 | 88.1 | 2.269 | 57.6 |
| 188B0225 | 225 | 39.4 | 5.647 | 143.4 | 1271 | 577 | 3.408 | 86.6 | 2.353 | 59.8 |
| 188B0250 | 250 | 43.8 | 5.548 | 140.9 | 1387 | 629 | 3.513 | 89.2 | 2.452 | 62.3 |
| 188B0275 | 275 | 48.2 | 5.378 | 136.6 | 1479 | 671 | 3.514 | 89.3 | 2.622 | 66.6 |
| 188B0300 | 300 | 52.5 | 5.437 | 138.1 | 1631 | 740 | 3.566 | 90.6 | 2.563 | 65.1 |
| 188B0325 | 325 | 56.9 | 5.348 | 135.8 | 1738 | 788 | 3.549 | 90.1 | 2.652 | 67.4 |
| 188B0350 | 350 | 61.3 | 5.267 | 133.8 | 1843 | 836 | 3.542 | 90.0 | 2.733 | 69.4 |
| 188B0375 | 375 | 65.7 | 5.147 | 130.7 | 1930 | 875 | 3.522 | 89.5 | 2.853 | 72.5 |
| 188B0400 | 400 | 70.1 | 5.09 | 129.3 | 2036 | 924 | 3.547 | 90.1 | 2.91 | 73.9 |
| 188B0425 | 425 | 74.4 | 5.028 | 127.7 | 2137 | 969 | 3.637 | 92.4 | 2.972 | 75.5 |
| 188B0450 | 450 | 78.8 | 5.013 | 127.3 | 2256 | 1023 | 3.57 | 90.7 | 2.987 | 75.9 |
| 188B0475 | 475 | 83.2 | 4.949 | 125.7 | 2350 | 1066 | 3.562 | 90.5 | 3.051 | 77.5 |
| 188B0500 | 500 | 87.6 | 4.933 | 125.3 | 2466 | 1119 | 3.638 | 92.4 | 3.067 | 77.9 |
| 188B0525 | 525 | 91.9 | 4.813 | 122.3 | 2527 | 1146 | 3.647 | 92.6 | 3.187 | 80.9 |
| 188B0550 | 550 | 96.3 | 4.811 | 122.2 | 2646 | 1200 | 3.598 | 91.4 | 3.189 | 81.0 |
| 188B0575 | 575 | 100.7 | 4.792 | 121.7 | 2755 | 1250 | 3.663 | 93.0 | 3.208 | 81.5 |
| 188B0600 | 600 | 105.1 | 4.765 | 121.0 | 2859 | 1297 | 3.703 | 94.1 | 3.235 | 82.2 |
| 188B0650 | 650 | 113.8 | 4.621 | 117.4 | 3004 | 1363 | 3.795 | 96.4 | 3.379 | 85.8 |
| 188B0700 | 700 | 122.6 | 4.584 | 116.4 | 3209 | 1456 | 3.701 | 94.0 | 3.416 | 86.8 |
| 188B0750 | 750 | 131.3 | 4.506 | 114.5 | 3379 | 1533 | 3.69 | 93.7 | 3.494 | 88.7 |
| 188B0800 | 800 | 140.1 | 4.462 | 113.3 | 3569 | 1619 | 3.827 | 97.2 | 3.538 | 89.9 |
| 188B0850 | 850 | 148.9 | 4.431 | 112.5 | 3766 | 1708 | 3.86 | 98.0 | 3.569 | 90.7 |
| 188B0900 | 900 | 157.6 | 4.249 | 107.9 | 3824 | 1735 | 3.825 | 97.2 | 3.751 | 95.3 |
| 188B0950 | 950 | 166.4 | 4.324 | 109.8 | 4107 | 1863 | 3.842 | 97.6 | 3.676 | 93.4 |
| 188B1000 | 1000 | 175.1 | 4.218 | 107.1 | 4218 | 1913 | 3.758 | 95.5 | 3.782 | 96.1 |
| 188B1100 | 1100 | 192.6 | 4.167 | 105.8 | 4583 | 2079 | 3.868 | 98.2 | 3.833 | 97.4 |
| 188B1200 | 1200 | 210.2 | 4.066 | 103.3 | 4879 | 2213 | 3.863 | 98.1 | 3.934 | 99.9 |
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 2.5″ (63.5 mm) inside diameter, 8″ (203.2 mm) free length
- Hyperco B 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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