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Metric Coilover Springs
More stroke, increased traction and handling, Less Un-sprung weight.
The only thing you will be losing is lap time.


Swift's innovative designs have made us a staple in the performance tuning world. Our products are the result of over 90 years of experience in industrial spring manufacturing. Our engineers have spent countless hours developing and re-developing our springs, in order to create a product that is light, durable, and compliant, while still maintaining linear spring rates.

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 silicone chrome steel and allows us to wind our springs with less coils, resulting in reduced un-sprung weight and increased stroke

Since the metric system is used widely in the sport compact and road race market, we have introduced the metric line of coilover springs to reduce confusion and to better cater to our customer's needs.

Our metric coilover springs come in various sizes with inner diameters ranging from 60mm (2.25in) to 70mm (2.75in), spring lengths from 127mm (5in) to 280mm (11in), and spring rates from 3kg (168lbs) all the way up to 34kg (1900lbs). Whether you are looking for a comfortable ride for your commuter or a more aggressive setup for your race car, we have the right spring for your application!



ID 60MM (2.37") - 4" Length

Part # Spring Rate Usable Stroke Max Stroke Max. Load
kgf/mm lbs/inch mm inch mm inch kgf lbs
Z60-102-180 18 1,008 50 2 55 2.2 990 2,183
Z60-102-200 20 1,120 49 1.9 53 2.1 1,060 2,337
Z60-102-220 22 1,232 48 1.9 52 2 1,144 2,522
Z60-102-240 24 1,344 47 1.9 51 2 1,224 2,698
Z60-102-260 26 1,456 45 1.8 51 2 1,326 2,923
Z60-102-280 28 1,568 43 1.7 51 2 1,428 3,148
Z60-102-300 30 1,680 43 1.7 50 2 1,500 3,307
Z60-102-320 32 1,792 42 1.7 50 2 1,600 3,527
Z60-102-340 34 1,904 42 1.7 48 1.9 1,632 3,598


ID 60MM (2.37") - 5" Length

Part # Spring Rate Usable Stroke Max Stroke Max. Load
kgf/mm lbs/inch mm inch mm inch kgf lbs
Z60-127-080 8.0 448 72 2.8 79 3.1 638 1,407
Z60-127-100 10.0 560 68 2.7 78 3.1 780 1,720
Z60-127-110 11.0 616 68 2.7 75 3.0 825 1,819
Z60-127-120 12.0 672 65 2.6 75 3.0 900 1,984
Z60-127-130 13.0 728 65 2.6 73 2.9 949 2,092
Z60-127-140 14.0 784 63 2.5 73 2.9 1,022 2,253
Z60-127-150 15.0 840 63 2.5 71 2.8 1,065 2,348
Z60-127-160 16.0 896 61 2.4 70 2.8 1,120 2,469
Z60-127-170 17.0 952 61 2.4 69 2.7 1,173 2,586
Z60-127-180 18.0 1008 59 2.3 68 2.7 1,224 2,698
Z60-127-200 20.0 1120 58 2.3 66 2.6 1,320 2,910
Z60-127-220 22.0 1232 55 2.2 67 2.6 1,474 3,250
Z60-127-240 24.0 1344 53 2.1 66 2.6 1,584 3,492
Z60-127-260 26.0 1456 53 2.1 64 2.5 1,664 3,668
Z60-127-280 28.0 1568 52 2.0 62 2.4 1,736 3,827
Z60-127-300 30.0 1680 51 2.0 61 2.4 1,830 4,034
Z60-127-320 32.0 1792 51 2.0 59 2.3 1,888 4,162
Z60-127-340 34.0 1904 49 1.9 59 2.3 2,006 4,422


ID 60MM (2.37") - 6" Length

Part # Spring Rate Usable Stroke Max Stroke Max. Load
kgf/mm lbs/inch mm inch mm inch kgf lbs
Z60-152-040 4.0 224 101 4.0 105 4.1 419 924
Z60-152-050 5.0 280 94 3.7 103 4.1 516 1,136
Z60-152-060 6.0 336 93 3.7 98 3.9 587 1,295
Z60-152-070 7.0 392 89 3.5 96 3.8 673 1,485
Z60-152-080 8.0 448 83 3.3 96 3.8 767 1,691
Z60-152-090 9.0 504 78 3.1 95 3.7 857 1,889
Z60-152-100 10.0 560 74 2.9 96 3.8 960 2,116
Z60-152-110 11.0 616 71 2.8 96 3.8 1,060 2,338
Z60-152-120 12.0 672 70 2.8 95 3.7 1,135 2,503
Z60-152-130 13.0 728 69 2.7 93 3.6 1,204 2,654
Z60-152-140 14.0 784 69 2.7 90 3.6 1,266 2,790
Z60-152-150 15.0 840 70 2.8 86 3.4 1,292 2,847
Z60-152-160 16.0 896 68 2.7 86 3.4 1,370 3,019
Z60-152-180 18.0 1008 65 2.6 86 3.4 1,548 3,413
Z60-152-200 20.0 1120 64 2.5 82 3.2 1,642 3,620
Z60-152-220 22.0 1232 64 2.5 80 3.1 1,753 3,866
Z60-152-240 24.0 1344 60 2.4 79 3.1 1,894 4,175
Z60-152-260 26.0 1456 59 2.3 78 3.1 2,025 4,465
Z60-152-280 28.0 1568 58 2.3 77 3.0 2,148 4,735
Z60-152-300 30.0 1680 56 2.2 71 2.8 2,136 4,709
Z60-152-320 32.0 1792 54 2.1 72 2.8 2,291 5,051
Z60-152-340 34.0 1904 55 2.2 66 2.6 2,237 4,932


ID 60MM (2.37") - 7" Length

Part # Spring Rate Usable Stroke Max Stroke Max. Load
kgf/mm lbs/inch mm inch mm inch kgf lbs
Z60-178-040 4.0 224 118 4.6 119 4.7 476 1,050
Z60-178-050 5.0 280 112 4.4 115 4.5 576 1,269
Z60-178-060 6.0 336 104 4.1 115 4.5 688 1,517
Z60-178-070 7.0 392 96 3.8 115 4.5 808 1,781
Z60-178-080 8.0 448 93 3.7 111 4.4 886 1,954
Z60-178-090 9.0 504 87 3.4 113 4.4 1,013 2,234
Z60-178-100 10.0 560 84 3.3 112 4.4 1,115 2,458
Z60-178-110 11.0 616 82 3.2 110 4.3 1,210 2,668
Z60-178-120 12.0 672 80 3.1 108 4.3 1,298 2,862
Z60-178-130 13.0 728 81 3.2 104 4.1 1,351 2,978
Z60-178-140 14.0 784 78 3.1 104 4.1 1,453 3,204
Z60-178-150 15.0 840 77 3.0 101 4.0 1,521 3,353
Z60-178-160 16.0 896 75 3.0 101 4.0 1,614 3,559
Z60-178-180 18.0 1008 72 2.8 102 4.0 1,831 4,036
Z60-178-200 20.0 1120 70 2.8 100 3.9 1,998 4,405
Z60-178-220 22.0 1232 70 2.8 93 3.7 2,046 4,511
Z60-178-240 24.0 1344 68 2.7 93 3.6 2,220 4,894


ID 60MM (2.37") - 8" Length

Part # Spring Rate Usable Stroke Max Stroke Max. Load
kgf/mm lbs/inch mm inch mm inch kgf lbs
Z60-203-040 4.0 224 128 5.0 136 5.3 543 1,198
Z60-203-050 5.0 280 125 4.9 129 5.1 645 1,421
Z60-203-060 6.0 336 110 4.3 132 5.2 791 1,743
Z60-203-070 7.0 392 103 4.1 133 5.2 931 2,052
Z60-203-080 8.0 448 99 3.9 131 5.1 1,046 2,307
Z60-203-090 9.0 504 95 3.7 130 5.1 1,173 2,585
Z60-203-100 10.0 560 90 3.5 129 5.1 1,294 2,853
Z60-203-110 11.0 616 89 3.5 128 5.0 1,408 3,104
Z60-203-120 12.0 672 87 3.4 124 4.9 1,484 3,273
Z60-203-130 13.0 728 86 3.4 124 4.9 1,613 3,557
Z60-203-140 14.0 784 83 3.3 122 4.8 1,707 3,762
Z60-203-160 16.0 896 81 3.2 119 4.7 1,902 4,194
Z60-203-180 18.0 1008 77 3.0 118 4.6 2,119 4,671
Z60-203-200 20.0 1120 73 2.9 118 4.6 2,362 5,207


ID 60MM (2.37") - 9" Length

Part # Spring Rate Usable Stroke Max Stroke Max. Load
kgf/mm lbs/inch mm inch mm inch kgf lbs
Z60-228-040 4.0 224 138 5.4 152 6.0 607 1,339
Z60-228-050 5.0 280 134 5.3 145 5.7 723 1,594
Z60-228-060 6.0 336 125 4.9 142 5.6 852 1,878
Z60-228-070 7.0 392 122 4.8 138 5.4 965 2,127
Z60-228-080 8.0 448 114 4.5 139 5.5 1,111 2,450
Z60-228-090 9.0 504 109 4.3 139 5.5 1,252 2,760
Z60-228-100 10.0 560 106 4.2 135 5.3 1,354 2,985
Z60-228-110 11.0 616 100 3.9 137 5.4 1,507 3,322
Z60-228-120 12.0 672 102 4.0 130 5.1 1,556 3,431
Z60-228-130 13.0 728 99 3.9 127 5.0 1,651 3,639
Z60-228-140 14.0 784 100 3.9 122 4.8 1,711 3,772
Z60-228-150 15.0 840 98 3.9 119 4.7 1,785 3,935
Z60-228-160 16.0 896 98 3.9 117 4.6 1,866 4,113


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