2.25″ ID 6″ Free Length (152mm) Standard Spring

100 lb – 17.54 N/mm – 1.79 kg/mm, 110 lb – 19.30 N/mm – 1.96 kg/mm, 120 lb – 21.05 N/mm – 2.14 kg/mm, 130 lb – 22.81 N/mm – 2.32 kg/mm, 140 lb – 24.56 N/mm – 2.5 kg/mm, 150 lb – 26.32 N/mm – 2.68 kg/mm, 160 lb – 28.07 N/mm – 2.86 kg/mm, 170 lb – 29.82 N/mm – 3.04 kg/mm, 180 lb – 31.58 N/mm – 3.21 kg/mm, 190 lb – 3.33 N/mm – 3.39 kg/mm, 200 lb – 35.09 N/mm – 3.57 kg/mm, 225 lb – 39.47 N/mm – 4.02 kg/mm, 250 lb – 43.86 N/mm – 4.64 kg/mm, 275 lb – 48.25 N/mm – 4.91 kg/mm, 300 lb – 52.63 N/mm – 5.36 kg/mm, 325 lb – 57.02 N/mm – 5.8 kg/mm, 350 lb – 61.4 N/mm – 6.25 kg/mm, 375 lb – 65.79 N/mm – 6.7 kg/mm, 400 lb – 70.18 N/mm – 7.14 kg/mm, 425 lb – 74.56 N/mm – 7.59 kg/mm, 450 lb – 78.94 N/mm – 8.04 kg/mm, 475 lb – 83.33 N/mm – 8.48 kg/mm, 500 lb – 87.72 N/mm – 8.93 kg/mm, 525 lb – 92.11 N/mm – 9.38 kg/mm, 550 lb – 96.49 N/mm – 9.82 kg/mm, 575 lb – 100.88 N/mm – 10.27 kg/mm, 600 lb – 105.26 N/mm – 10.71 kg/mm, 625 lb – 109.65 N/mm – 11.16 kg/mm, 650 lb – 114.04 N/mm – 11.61 kg/mm, 675 lb – 118.42 N/mm – 12.05 kg/mm, 700 lb – 122.81 N/mm – 12.5 kg/mm, 725 lb – 127.19 N/mm – 12.95 kg/mm, 750 lb – 131.58 N/mm – 13.39 kg/mm, 775 lb – 135.96 N/mm – 13.84 kg/mm, 800 lb – 140.35 N/mm – 14.29 kg/mm, 825 lb – 144.74 N/mm – 14.73 kg/mm, 850 lb – 149.12 N/mm – 15.18 kg/mm, 875 lb – 153.51 N/mm – 15.63 kg/mm, 900 lb – 157.89 N/mm – 16.07 kg/mm, 925 lb – 162.28 N/mm – 16.52 kg/mm, 950 lb – 166.67 N/mm – 16.96 kg/mm, 975 lb – 171.05 N/mm – 17.41 kg/mm, 1000 lb – 175.44 N/mm – 17.86 kg/mm, 1050 lb – 184.21 N/mm – 18.75 kg/mm, 1100 lb – 192.98 N/mm – 19.64 kg/mm, 1150 lb – 201.75 N/mm – 20.54 kg/mm, 1200 lb – 210.53 N/mm – 21.43 kg/mm, 1300 lb – 228.07 N/mm – 23.21 kg/mm, 1400 lb – 245.61 N/mm – 25 kg/mm, 1500 lb – 263.16 N/mm – 26.79 kg/mm, 1600 lb – 280.70 N/mm – 28.57 kg/mm, 1700 lb – 298.25 N/mm – 30.36 kg/mm, 1800 lb – 315.79 N/mm – 32.14 kg/mm, 1900 lb – 333.33 N/mm – 33.93 kg/mm, 2000 lb – 350.88 N/mm – 35.71 kg/mm