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Standard Coilover Springs
Increase traction, less un-sprung mass, more stroke, increased handling. The only thing you will be losing is track time

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

Most of Swift 10" and longer springs (Excluding the Drag racing springs and Conventional springs) are barrel design; the design is to solve all spring Deflection (bowing) problems. With bowing springs, you can expect spring rate inconsistency, and rubbing against shock body that would lead to damage on the shock adjusting perch thread.

One approach to assess spring deflection would be to increase the number of coils on the springs. With more coils on the spring, you will experience less bowing motion. This is the easy and cheaper method to solve the issue. But the downside of this method is a decrease in spring stroke, increase in un-sprung mass, and will affect the overall movement of other suspension components

Unlike others, Swift designed barrel springs with ease and consistency of vehicle setup in mind, our barrel springs design have a maximum of 4" outer diameter (except B5 and B3 series)(Usually located on the center coil of the spring). Because most other manufacture do not design their barrel springs with this rule, most of their barrel springs outside diameter will differ from one rate to another. This creates a hard time for racers especially with tight clearances to test and see which rates will fit and which rate does not. A heavier rate spring can interfere with the suspension A-arm or other suspension components.



Bulletproof Series Springs (Parts number ending in BP)
Purpose built for those of you putting more stress on a spring than how is conventionally used. We sought after a new approach in development from our regular suspension spring.

After years of research and development, Swift springs would like to proudly present the BP Spring for circle track racing. Specifically designed to meet and surpass the unique needs of Circle Track Racers. Although specially made, these springs are constructed with the same SWIFT SPRINGS philosophy and that is to be responsive and increase overall traction

ID 1.88" - 8" LENGTH - STRAIGHT TYPE

Part # Spring Rate Usable Stroke Max Stroke Max. Load
lbs/inch kgf/mm inch mm inch mm lbs kg
080-188-140 140 2.5 4.9 124 5.4 138 761 345
080-188-150 150 2.7 4.6 116 5.6 142 838 380
080-188-160 160 2.9 4.8 121 5.3 135 849 385
080-188-170 170 3 4.8 121 5.2 131 880 399
080-188-180 180 3.2 4.5 115 5.3 135 955 433
080-188-190 190 3.4 4.6 116 5.2 131 979 444
080-188-200 200 3.6 4.3 110 5.3 134 1,056 479
080-188-210 210 3.8 4.6 116 5 126 1,056 479
080-188-220 220 3.9 4.3 110 5.1 130 1,122 509
080-188-230 230 4.1 4.6 116 4.8 121 1,100 499
080-188-240 240 4.3 4.4 111 4.9 125 1,177 534
080-188-250 250 4.5 4.2 107 5 127 1,252 568
080-188-260 260 4.6 4.3 109 4.8 123 1,259 571
080-188-270 270 4.8 4.4 111 4.6 118 1,257 570
080-188-280 280 5 4.2 107 4.8 121 1,332 604
080-188-300 300 5.4 4.3 109 4.5 115 1,356 615
080-188-325 325 5.8 3.9 100 4.8 121 1,545 701
080-188-350 350 6.3 4 101 4.6 116 1,594 723

ID 1.88" - 10" LENGTH - STRAIGHT TYPE

Part # Spring Rate Usable Stroke Max Stroke Max. Load
lbs/inch kgf/mm inch mm inch mm lbs kg
100-188-100 100 1.8 6.1 156 6.5 166 655 297
100-188-110 110 2.0 6.1 155 6.9 174 752 341
100-188-120 120 2.1 6.2 158 6.5 166 785 356
100-188-130 130 2.3 5.7 146 6.8 172 882 400

ID 1.88" - 10" LENGTH - BARREL TYPE (OUTSIDE DIAMETER IS SET AT 3")

Part # Spring Rate Usable Stroke Max Stroke Max. Load
lbs/inch kgf/mm inch mm inch mm lbs kg
100-188-100B3 100 1.8 6.5 164 7.5 190 754 342
100-188-110B3 110 2.0 6.3 160 7.4 188 829 376
100-188-120B3 120 2.2 6.2 158 7.3 185 877 398
100-188-130B3 130 2.3 6.2 158 7.0 178 903 409
100-188-140B3 140 2.5 5.9 151 7.2 183 1,009 458
100-188-150B3 150 2.7 6.1 156 6.9 175 1,042 473
100-188-160B3 160 2.9 5.7 146 7.0 179 1,144 519
100-188-170B3 170 3.0 5.8 147 6.9 175 1,157 525
100-188-180B3 180 3.2 5.8 148 6.7 171 1,206 547
100-188-190B3 190 3.4 5.9 149 6.5 166 1,244 564
100-188-200B3 200 3.6 5.7 146 6.5 166 1,317 598
100-188-220B3 220 3.9 5.7 145 6.4 163 1,402 636
100-188-240B3 240 4.3 5.6 141 6.3 159 1,510 685
100-188-260B3 260 4.6 5.4 138 6.2 159 1,612 731
100-188-280B3 280 5.0 5.4 136 6.1 155 1,704 773
100-188-300B3 300 5.4 5.1 130 6.1 155 1,845 837
100-188-325B3 325 5.8 5.2 131 5.9 149 1,905 864
100-188-350B3 350 6.3 5.0 128 5.7 146 2,028 920

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