2010-2012 PRO-RIDE RUSH Switchback RMK Service Manual, Page 326Get this manual
Steering and Suspensions 2010-2011 RTS Spring Guide The stock rear track spring is 190#inch springThe stock spring will accommodate most riders weighing between 120 and 250 lbs(54-113 kg)Two additional accessory springs are available for riders whose weight is at the lowest or highest settings for the 190 springAll of the springs, spring gauge tools, and spring preload measurements using tape measure are provided in the RTS Spring Guide Table belowNOTE: Use tape measure in the same manner as gauge tool with the end of the tape against the spring tension adjuster knob and the preload measurement length at the shock-body cap parting line
2010-2011 RTS Spring Guide Table
STOCK 190 SPRING 120250 LBSSPRING PN2010=7043572-385 20117043572-133 STOCK SPRING GAUGE PN 20105253792 20115254748 Rider Weight lbs120 130 140 150 160 170 180 190 200 210 220 230 240 250 kg 54 59 64 68 73 77 82 86 91 95 100 104 109 113 Preload in2 58 MIN 34 78 18 14 38 12 58 34 78 18 14 MAX cm 6.7 MIN 7.0 7.3 7.6 7.9 8.3 8.6 8.9 9.2 9.5 9.8 10.1 10.5 10.8 MAX 120 LWT SPRING 90155 LBSSPRING PN7041575-385 LWT SPRING GAUGE PN 20105253854 20115254749 Rider Weight lbs90 95 100 105 110 115 120 125 130 135 140 150 155 kg 41 43 45 48 50 52 54 57 59 61 64 68 70 Preload in2 58 MIN 34 78 18 14 38 12 58 34 78 18 MAX cm 6.7 MIN 7.0 7.3 7.6 7.9 8.3 8.6 8.9 9.2 9.5 9.8 10.1 10.5 MAX lbs240 255 270 280 295 310 320 335 260 HD SPRING 240+ LBSSPRING PN7043585-385 HD SPRING GAUGE PN 20105253855 20115254750 Rider Weight kg 109 116 122 127 134 141 145 152 Preload in2 38 MIN 12 58 34 78 18 14 MAX cm 6.0 MIN 6.3 6.7 7.0 7.3 7.6 7.9 8.3 MAX