Hyperco 2.5″ I.D. x 10″ Free Length Coilover Spring, 85-900lbs/in Rate (Choose Rate)
$85.99
Hyperco 2.5″ I.D. x 10″ 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, 10″ (254.0 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 10″ family is offered in rates from 85 lbs/in (15 N/mm) up through 900 lbs/in (158 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., 10″ (254.0 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) |
|---|---|---|---|---|---|---|---|---|---|---|
| 1810B085 | 85 | 14.9 | 7.534 | 191.4 | 640 | 290 | 3.53 | 89.7 | 2.466 | 62.6 |
| 1810B095 | 95 | 16.6 | 7.463 | 189.6 | 709 | 322 | 3.379 | 85.8 | 2.537 | 64.4 |
| 1810B0110 | 110 | 19.3 | 7.467 | 189.7 | 821 | 372 | 3.383 | 85.9 | 2.533 | 64.3 |
| 1810B0125 | 125 | 21.9 | 7.386 | 187.6 | 923 | 419 | 3.419 | 86.8 | 2.614 | 66.4 |
| 1810B0150 | 150 | 26.3 | 7.385 | 187.6 | 1108 | 503 | 3.46 | 87.9 | 2.615 | 66.4 |
| 1810B0162 | 162 | 28.4 | 7.205 | 183.0 | 1167 | 529 | 3.422 | 86.9 | 2.795 | 71.0 |
| 1810B0175 | 175 | 30.6 | 7.192 | 182.7 | 1259 | 571 | 3.443 | 87.5 | 2.808 | 71.3 |
| 1810B0185 | 185 | 32.4 | 7.021 | 178.3 | 1299 | 589 | 3.578 | 90.9 | 2.979 | 75.7 |
| 1810B0200 | 200 | 35.0 | 7.015 | 178.2 | 1403 | 636 | 3.494 | 88.7 | 2.985 | 75.8 |
| 1810B0225 | 225 | 39.4 | 6.876 | 174.7 | 1547 | 702 | 3.501 | 88.9 | 3.124 | 79.3 |
| 1810B0250 | 250 | 43.8 | 6.786 | 172.4 | 1697 | 770 | 3.577 | 90.9 | 3.214 | 81.6 |
| 1810B0275 | 275 | 48.2 | 6.667 | 169.3 | 1833 | 831 | 3.648 | 92.7 | 3.333 | 84.7 |
| 1810B0300 | 300 | 52.5 | 6.588 | 167.3 | 1977 | 897 | 3.645 | 92.6 | 3.412 | 86.7 |
| 1810B0325 | 325 | 56.9 | 6.506 | 165.3 | 2114 | 959 | 3.647 | 92.6 | 3.494 | 88.7 |
| 1810B0350 | 350 | 61.3 | 6.463 | 164.2 | 2262 | 1026 | 3.702 | 94.0 | 3.53 | 89.7 |
| 1810B0375 | 375 | 65.7 | 6.269 | 159.2 | 2351 | 1066 | 3.69 | 93.7 | 3.731 | 94.8 |
| 1810B0400 | 400 | 70.1 | 6.291 | 159.8 | 2516 | 1141 | 3.629 | 92.2 | 3.709 | 94.2 |
| 1810B0425 | 425 | 74.4 | 6.218 | 157.9 | 2643 | 1199 | 3.65 | 92.7 | 3.782 | 96.1 |
| 1810B0450 | 450 | 78.8 | 6.14 | 156.0 | 2762 | 1253 | 3.684 | 93.6 | 3.86 | 98.0 |
| 1810B0475 | 475 | 83.2 | 6.073 | 154.3 | 2885 | 1309 | 3.807 | 96.7 | 3.927 | 99.7 |
| 1810B0500 | 500 | 87.6 | 6.02 | 152.9 | 3010 | 1365 | 3.863 | 98.1 | 3.98 | 101.1 |
| 1810B0525 | 525 | 91.9 | 5.969 | 151.6 | 3134 | 1422 | 3.793 | 96.3 | 4.031 | 102.4 |
| 1810B0550 | 550 | 96.3 | 5.869 | 149.1 | 3228 | 1464 | 3.802 | 96.6 | 4.131 | 104.9 |
| 1810B0575 | 575 | 100.7 | 5.803 | 147.4 | 3337 | 1514 | 3.734 | 94.8 | 4.197 | 106.6 |
| 1810B0600 | 600 | 105.1 | 5.818 | 147.8 | 3491 | 1583 | 3.919 | 99.5 | 4.182 | 106.2 |
| 1810B0650 | 650 | 113.8 | 5.752 | 146.1 | 3738 | 1696 | 3.921 | 99.6 | 4.248 | 107.9 |
| 1810B0700 | 700 | 122.6 | 5.556 | 141.1 | 3889 | 1764 | 3.781 | 96.0 | 4.444 | 112.9 |
| 1810B0750 | 750 | 131.3 | 5.535 | 140.6 | 4151 | 1883 | 3.85 | 97.8 | 4.465 | 113.4 |
| 1810B0800 | 800 | 140.1 | 5.457 | 138.6 | 4365 | 1980 | 3.864 | 98.1 | 4.543 | 115.4 |
| 1810B0850 | 850 | 148.9 | 5.233 | 132.9 | 4448 | 2018 | 3.738 | 94.9 | 4.767 | 121.1 |
| 1810B0900 | 900 | 157.6 | 5.3 | 134.6 | 4769 | 2163 | 3.94 | 100.1 | 4.7 | 119.4 |
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, 10″ (254.0 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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