# all units are in mm # #name wire spring number # gauge diameter of coils 41mm RaceTech .95 5.14 29.6 29.25 41mm RaceTech .90 5.09 30 29 41mm RaceTech .85 5.01 30.17 27.33 41mm RaceTech .85 (2) 4.94 30.25 26.5 41mm RaceTech .80 4.87 29.9 28.1 mod'd F4(total) 4.85 32.67 21 mod'd F4(final) 4.85 32.67 16 43mm mystery F4 5.00 31.38 23.5 R6 spings (I think) 4.80 33.13 17