[HP Autosport]

Besides the front spring rate option listed here:

Spring options:
Part # Length I.D. Rate
48010-03 200mm 65mm 30 N/mm // 172 lbs/in // 3 kg/mm
48010-05 200mm 65mm 35 N/mm // 200 lbs/in // 3.5 kg/mm
48010-07 200mm 65mm 40 N/mm // 229 lbs/in // 4 kg/mm
48010-09 200mm 65mm 45 N/mm // 258 lbs/in // 4.6 kg/mm
48010-11 200mm 65mm 50 N/mm // 286 lbs/in // 5 kg/mm
48010-13 200mm 65mm 55 N/mm // 314 lbs/in // 5.6 kg/mm
48010-15 200mm 65mm 60 N/mm // 343 lbs/in // 6.1 kg/mm
48010-19 200mm 65mm 70 N/mm // 400 lbs/in // 7.1 kg/mm
48010-23 200mm 65mm 80 N/mm // 458 lbs/in // 8.2 kg/mm
48010-27 200mm 65mm 90 N/mm // 515 lbs/in // 9.2 kg/mm
48010-31 200mm 65mm 100 N/mm // 572 lbs/in // 10.2 kg/mm
48010-35 200mm 65mm 110 N/mm // 630 lbs/in // 11.2 kg/mm
48010-39 200mm 65mm 120 N/mm // 687 lbs/in // 12.2 kg/mm
48010-43 200mm 65mm 130 N/mm // 744 lbs/in // 13.3 kg/mm
48010-47 200mm 65mm 140 N/mm // 801 lbs/in // 14.3 kg/mm
48010-55 200mm 65mm 160 N/mm // 915 lbs/in // 16.3 kg/mm
48010-63 200mm 65mm 180 N/mm // 1030 lbs/in // 18.4 kg/mm
48010-71 200mm 65mm 200 N/mm // 1144 lbs/in // 20.4 kg/mm

Some rear rate options are available now:

100, 110, and 120n/mm springs are just added to the optional spring rates list.

190n/mm is the standard rear rate.