HOME ADVANTAGE HISTORY DEALER CONTACT
Standard Conventional Springs
Developed specifically for Round track racing. Designed to have the optimal spring rate sweet spot where the spring is used on actual vehicle.


As you might know, United States are the largest racer populated country in the world. Through our experiences from extensive testing in world class racing in Europe and Asia, we have great confidence that we can provide the same results in the US. Swift specifically designed a standard measurement race springs to accommodate American race industries including oval track racing, and drag racing, and offroad racing.

By knowing the main characteristics that American racer demands, we designed and engineered the standard measurement springs based on data that we had collected through racers that are at the top of their sport. A slight difference in design than our metric coilover springs. Many enthusiasts will swap springs from brand to brand with the only noticeable difference being a stiffer or softer ride. But what if a spring could offer a noticeable increase in traction, smoother weight transfer, better ride quality, lower tire temperatures, and a more predictable feel? The engineers at Swift have taken that "what if" and turned it into reality. All Swift Springs are manufactured using H5S.TW. which is far superior to typical silicone chrome steel and allows us to wind a much more responsive spring with less coils, resulting in reduced un-sprung weight and increased stroke.


OD 5" - 9.5" LENGTH - FRONT

Part # Spring Rate Usable Stroke Max Stroke Max. Load
lbs/inch kgf/mm inch mm inch mm lbs kg
950-500-450 450 8 5.7 144 6.3 159 2,804 1,272
950-500-500 500 9 5.7 144 7.6 193 3,041 1,377
950-500-550 550 9.8 5.7 144 7.4 187 3,213 1,455
950-500-600 600 10.7 5.5 139 7.3 185 3,468 1,570
950-500-650 650 11.6 5.3 134 7.3 185 3,767 1,705
950-500-700 700 12.5 5.3 136 7 178 3,856 1,745
950-500-750 750 13.4 5 126 7.2 183 4,276 1,935
950-500-800 800 14.3 5.1 130 6.9 175 4,309 1,950
950-500-850 850 15.2 4.8 122 7.1 179 4,729 2,140
950-500-900 900 16.1 5 127 5.1 129 4,571 2,073
950-500-950 950 17 4.7 121 5.3 134 5,012 2,273
950-500-1000 1000 17.9 4.5 115 5.4 138 5,433 2,464


OD 5" - 11" LENGTH

Part # Spring Rate Usable Stroke Max Stroke Max. Load
lbs/inch kgf/mm inch mm inch mm lbs kg
110-500-125 125 2.2 7.7 197 9.1 230 1,135 516
110-500-125 BP 125 2.2 8.5 217 8.7 221 1,091 495
110-500-150 150 2.7 7.6 193 8.9 226 1,334 607
110-500-150 BP 150 2.7 8.5 215 8.6 218 1,292 586
110-500-175 BP 175 3.1 7.9 200 8.4 214 1,479 671
110-500-200 200 3.6 7.3 186 8.6 217 1,710 778
110-500-200 BP 200 3.6 7.6 194 8.5 217 1,707 774
110-500-225 225 4 7.2 182 8.4 214 1,896 862
110-500-225 BP 225 4 7.8 198 8.2 209 1,847 838
110-500-250 250 4.5 7.1 180 8.3 210 2,069 941
110-500-250 BP 250 4.5 7.4 187 8.3 210 2,065 937
110-500-275 275 4.9 6.9 175 8.2 208 2,257 1,027
110-500-300 300 5.4 6.9 175 8 203 2,407 1,095
110-500-325 325 5.8 6.8 172 7.9 201 2,573 1,171
110-500-350 350 6.3 6.6 166 7.9 201 2,768 1,259
110-500-375 375 6.7 6.5 165 7.8 197 2,917 1,327
110-500-400 400 7.2 6.5 164 7.6 194 3,058 1,392


OD 5" - 13" LENGTH

Part # Spring Rate Usable Stroke Max Stroke Max. Load
lbs/inch kgf/mm inch mm inch mm lbs kg
130-500-150 150 2.7 8.9 225 10.3 262 1,551 703
130-500-150 BP 150 2.7 9.7 246 10.1 256 1,517 688
130-500-175 BP 175 3.1 9.4 238 9.9 252 1,738 788
130-500-200 BP 200 3.6 9.2 233 9.7 246 1,940 880
130-500-225 BP 225 4 9.2 233 9.8 249 2,205 1,000
130-500-250 250 4.5 8.5 217 9.5 242 2,383 1,080
130-500-275 275 4.9 8.3 210 9.5 240 2,602 1,179
130-500-300 300 5.4 8.4 213 9.1 231 2,735 1,240
130-500-325 325 5.8 8.2 209 9 229 2,928 1,327
130-500-350 350 6.3 7.9 202 9 228 3,150 1,428
130-500-375 375 6.7 7.7 196 9 228 3,372 1,528
130-500-400 400 7.2 7.6 194 8.8 224 3,532 1,601
130-500-450 450 8.1 7.5 190 8.6 219 3,873 1,757
130-500-500 500 9 7.4 189 8.3 212 4,173 1,893


OD 5" - 15" LENGTH

Part # Spring Rate Usable Stroke Max Stroke Max. Load
lbs/inch kgf/mm inch mm inch mm lbs kg
150-500-225 225 4 9.2 233 11.2 285 2,522 1,144
150-500-250 250 4.5 9.2 233 10.9 277 2,722 1,235
150-500-275 275 4.9 8.9 225 10.8 275 2,976 1,350
150-500-300 300 5.4 8.6 219 10.7 272 3,217 1,459


OD 5" - 16" LENGTH

Part # Spring Rate Usable Stroke Max Stroke Max. Load
lbs/inch kgf/mm inch mm inch mm lbs kg
160-500-125 BP 125 2.2 12 305 12.3 313 1,541 699
160-500-150 BP 150 2.7 11.7 297 12 306 1,808 820
160-500-175 BP 175 3.1 10.7 279 12 305 2,100 953
160-500-200 200 3.6 10.5 266 11.7 298 2,350 1,066


PULL BAR SPRINGS

Part # Spring Rate Usable Stroke Max Stroke Max. Load
lbs/inch inch mm inch mm lbs kg
067-500-600-1200 600-1200 3.0 76 3.2 81 2,632 1,194


OD 5.5" - 9.5" LENGTH - FRONT

Part # Spring Rate Usable Stroke Max Stroke Max. Load
lbs/inch kgf/mm inch mm inch mm lbs kg
950-550-325 325 5.8 6.1 155 6.8 172 2,206 1,001
950-550-350 350 6.3 6.1 154 6.7 169 2,334 1,059
950-550-375 375 6.7 6 152 6.6 167 2,471 1,121
950-550-400 400 7.2 6 152 6.5 164 2,589 1,174
950-550-425 425 7.6 5.8 148 6.5 164 2,751 1,248
950-550-450 450 8.1 5.7 146 6.4 162 2,877 1,305
950-550-475 475 8.5 5.4 138 6.5 165 3,093 1,403
950-550-500 500 9 5.5 139 6.4 162 3,196 1,450
950-550-550 550 9.8 5.5 139 6.2 157 3,408 1,546
950-550-600 600 10.7 5.5 139 5.9 151 3,575 1,622
950-550-650 650 11.6 5.1 129 6.1 156 4,001 1,815
950-550-700 700 12.5 5.1 130 5.9 150 4,144 1,880
950-550-750 750 13.4 4.8 122 6.1 154 4,558 2,067
950-550-800 800 14.3 5 126 5.7 145 4,578 2,076
950-550-850 850 15.2 4.7 119 5.9 149 4,998 2,267


OD 5.5" - 11" LENGTH - FRONT

Part # Spring Rate Usable Stroke Max Stroke Max. Load
lbs/inch kgf/mm inch mm inch mm lbs kg
110-550-350 350 6.3 6.5 165 7.7 196 2,701 1,225
110-550-375 375 6.7 6.3 160 7.7 195 2,879 1,306
110-550-400 400 7.1 6.2 158 7.7 195 3,071 1,393
110-550-400 420 7.6 6.1 155 7.5 191 3,196 1,450

Dealers | What's the Advantage | Home