Swift Springs - Standard Coilover Springs
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ID 1.63
ID 1.88
ID 2.5
ID 3.0
ID 3.5
ID 3.75

Standard Coilover Springs.

Increase traction. Less un-sprung mass. More Stroke. Increased handling.
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As you might know, the United States is 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
  • Drag Racing
  • Off-Road Racing
  • And much more!
Standard Coilover Springs
Slight difference in design than our metric coilover springs.

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.

Turning 'what if?' into reality.

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. 

Superior Material.

All Swift Springs are manufactured using (HS5.TW) which is far superior to 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.
Standard Coilover Springs

Understanding spring deflection.

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 the 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.

Barrel Design for ease and consistency.

Unlike others, Swift designed barrel springs with ease and consistency of vehicle setup in mind, our barrel spring design has a maximum of 4″ outer diameter (except B5 and B4 series) (Usually located on the center coil of the spring). Because most other manufacturers 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.

Standard Coilover Springs

Bulletproof series Springs.

For the Ultimate Challenge

Introducing the BP Series: robust, resilient, and responsive. Built for the extreme, these springs are for the racer who knows no bounds and pushes every limit. With Swift’s philosophy of responsiveness and traction, the BP Springs are your secret weapon against fatigue on the track.

Bulletproof Springs

DUE TO CONTINUED ENGINEERING ADVANCES, PRODUCT SPECIFICATION MAY CHANGE WITHOUT NOTICE.

4.5" Length - 1.63" ID
Barrel Type [Quarter Midget]

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
045-163-050 B
50
2.8
3.6
179
045-163-060 B
60
2.8
3.5
213
045-163-070 B
70
2.6
3.5
245
045-163-080 B
80
2.6
3.5
277
045-163-090 B
90
2.4
3.4
308
045-163-100 B
100
2.4
3.4
339
045-163-110 B
110
2.4
3.3
368
045-163-120 B
120
2.4
3.3
397
045-163-130 B
130
2.4
3.2
420
045-163-140 B
140
2.4
3.2
452
045-163-150 B
150
2.4
3.2
478
045-163-160 B
160
2.4
3.1
504
045-163-170 B
170
2.3
3.1
529

4.5" Length - 1.63" ID
Tight Helix Type [Quarter Midget]

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
045-163-070 TH
070
2.7
2.7
190
045-163-080 TH
080
2.5
2.5
202
045-163-090 TH
090
2.4
2.4
220
045-163-100 TH
100
2.4
2.4
236
045-163-110 TH
110
2.6
2.6
281
045-163-120 TH
120
2.3
2.3
274
045-163-130 TH
130
2.4
2.4
317
4.5″ Length – 1.63″ ID Barrel Type [Quarter Midget]
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
045-163-050B 50 2.8 3.6 179
045-163-060B 60 2.8 3.5 213
045-163-070B 70 2.6 3.5 245
045-163-080B 80 2.6 3.5 277
045-163-090B 90 2.4 3.4 308
045-163-100B 100 2.4 3.4 339
045-163-110B 110 2.4 3.3 368
045-163-120B 120 2.4 3.3 397
045-163-130B 130 2.4 3.2 420
045-163-140B 140 2.4 3.2 452
045-163-150B 150 2.4 3.2 478
045-163-160B 160 2.4 3.1 504
045-163-170B 170 2.3 3.1 529

4.5″ Length – 1.63″ ID Tight Helix Type [Quarter Midget]
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
045-163-070TH 70 2.7 2.7 190
045-163-080TH 80 2.5 2.5 202
045-163-090TH 90 2.4 2.4 220
045-163-100TH 100 2.4 2.4 236
045-163-120TH 120 2.3 2.3 274
045-163-130TH 130 2.4 2.4 317
8″ Length – 1.88″ ID Straight Type
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
080-188-050 50 5.8 5.8 289
080-188-060 60 5.5 5.5 331
080-188-070 70 5.4 5.4 375
080-188-080 080 5.6 5.6 450
080-188-090 90 5.1 5.1 461
080-188-100 100 5.3 5.3 531
080-188-110 110 5.6 5.6 611
080-188-120 120 5.0 5.0 595
080-188-130 130 5.2 5.2 676
080-188-140 140 4.9 5.4 761
080-188-150 150 4.6 5.6 838
080-188-160 160 4.8 5.3 849
080-188-170 170 4.8 5.2 880
080-188-175 175 4.6 5.2 917
080-188-180 180 4.5 5.3 955
080-188-185 185 4.7 5.3 941
080-188-190 190 4.6 5.2 979
080-188-200 200 4.3 5.3 1,056
080-188-210 210 4.6 5.0 1,056
080-188-220 220 4.3 5.1 1,122
080-188-230 230 4.6 4.8 1,100
080-188-240 240 4.4 4.9 1,177
080-188-250 250 4.2 5.0 1,252
080-188-260 260 4.3 4.8 1,259
080-188-270 270 4.4 4.6 1,257
080-188-275 275 4.3 4.7 1,294
080-188-290 290 4.1 4.8 1,409
080-188-300 300 4.3 4.5 1,356
080-188-325 325 3.9 4.8 1,545
080-188-350 350 4.0 4.6 1,594
NEW 080-188-375 375 4.0 4.4 1,639
NEW 080-188-400 400 3.9 4.3 1,717
NEW 080-188-425 425 3.9 4.1 1,723
8″ Length – 1.88″ ID Tight Helix Type
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
080-188-140 TH 140 4.2 4.2 590
080-188-150 TH 150 3.9 3.9 585
080-188-160 TH 160 4.1 4.1 655
080-188-170 TH 170 3.7 3.7 636
  10″ Length – 1.88″ ID Straight Type
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
100-188-100 100 6.1 6.5 655
100-188-110 110 6.1 6.9 752
100-188-120 120 6.2 6.5 785
100-188-130 130 5.7 6.8 882
  10″ Length – 1.88″ ID Barrel Type (Outside Diameter is set at 3″)
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
100-188-100B3 100 6.5 7.5 754
100-188-110B3 110 6.3 7.4 829
100-188-120B3 120 6.2 7.3 877
100-188-130B3 130 6.2 7.0 903
100-188-140B3 140 5.9 7.2 1,014
100-188-150B3 150 6.1 6.9 1,042
100-188-160B3 160 5.7 7.0 1,144
100-188-170B3 170 5.8 6.9 1,157
100-188-180B3 180 5.8 6.7 1,206
100-188-190B3 190 5.8 6.4 1,219
100-188-200B3 200 5.7 6.5 1,317
100-188-220B3 220 5.7 6.4 1,402
100-188-240B3 240 5.6 6.3 1,510
100-188-260B3 260 5.4 6.3 1,612
100-188-280B3 280 5.4 5.9 1,651
100-188-300B3 300 5.1 6.1 1,845
100-188-325B3 325 5.2 5.9 1,905
100-188-350B3 350 5.0 5.7 2,028
 
4″ Length – 2.5″ ID Straight Type
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
040-250-300 300 2.6 2.8 844
040-250-350 350 2.5 2.7 960
040-250-400 400 2.5 2.7 1,066

6″ Length – 2.5″ ID Barrel Type
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
060-250-100 B 100 4.7 4.7 467
060-250-125 B 125 4.5 4.5 567
060-250-150 B 150 4.5 4.5 670
060-250-175 B 175 4.4 4.4 774
060-250-200 B 200 4.1 4.3 855
060-250-250 B 250 3.9 4.3 1,067
060-250-300 B 300 3.8 4.2 1,248
060-250-350 B 350 3.7 4.1 1,433

7″ Length – 2.5″ ID Barrel Type
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
070-250-350 B 350 4.6 4.6 1,598
070-250-400 B 400 4.4 4.4 1,780
070-250-450 B 450 4.4 4.4 1,967
070-250-500 B 500 4.3 4.3 2,146
070-250-550 B 550 4.2 4.2 2,317
070-250-600 B 600 4.1 4.1 2,480
070-250-650 B 650 4.1 4.1 2,687
070-250-700 B 700 4.1 4.1 2,866
070-250-750 B 750 4.0 4.0 2,982

8″ Length – 2.5″ ID Barrel Type
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
080-250-450 B 450 4.6 5.1 2,285
080-250-500 B 500 4.5 5.0 2,480
080-250-550 B 550 4.5 4.9 2,685
080-250-600 B 500 4.3 4.3 2,146
080-250-650 B 650 4.3 4.7 3,071

8″ Length – 2.5″ ID Straight Type
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
080-250-100 100 5.8 5.8 582
080-250-125 125 5.6 5.6 710
080-250-150 150 5.7 5.7 877
080-250-175 175 5.2 5.7 985
080-250-200 200 5.1 5.8 1,151
080-250-225 225 4.9 5.7 1,281
080-250-250 250 4.8 5.6 1,400
080-250-275 275 4.7 5.5 1,516
080-250-300 300 4.7 5.4 1,621
080-250-350 350 4.6 5.2 1,837
080-250-375 375 4.4 5.2 1,954
080-250-400 400 4.4 5.2 2,065
080-250-425 425 4.3 5.1 2,172
080-250-450 450 4.3 5.1 2,274
080-250-475 475 4.3 5.0 2,371
080-250-500 500 4.2 4.9 2,461
080-250-525 525 4.2 4.8 2,546
080-250-550 550 4.1 4.9 2,678
080-250-600 600 4.0 4.8 2,883
080-250-650 650 4.0 4.6 3,010
080-250-700 700 3.9 4.5 3,180
080-250-1100 1100 3.5 3.9 4,339
080-250-1300 1300 3.2 4.0 5,220
080-250-1400 1400 3.2 3.8 5,298
080-250-1500 1500 3.2 3.5 5,309
080-250-1600 1600 3.0 3.8 6,041

10″ Length – 2.5″ ID Barrel Type
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
100-250-080 B 80 7.8 7.8 626
100-250-100 B 100 7.6 7.6 765
100-250-115 B 115 7.3 7.3 836
100-250-125 B 125 7.3 7.3 917
100-250-135 B 135 7.1 7.1 955
100-250-150 B 150 6.8 8.2 1,152
100-250-160 B 160 6.7 7.6 1,204
100-250-175 B 175 6.5 7.6 1,325
100-250-185 B 185 6.4 7.6 1,397
100-250-200 B 200 6.4 7.4 1,480
100-250-225 B 225 6.3 7.2 1,622
100-250-250 B 250 6.1 7.1 1,780
100-250-275 B 275 5.9 7.1 1,959
100-250-300 B 300 5.8 7.0 2,103
100-250-325 B 325 5.6 7.0 2,263
100-250-350 B 350 5.6 6.8 2,384
100-250-375 B 375 5.6 6.7 2,496
100-250-400 B 400 5.5 6.6 2,629
100-250-425 B 425 5.4 6.5 2,768
100-250-450 B 450 5.3 6.4 2,889
100-250-475 B 475 5.4 6.2 2,954
100-250-500 B 500 5.3 6.1 3,051
100-250-525 B 525 5.2 6.1 3,226
100-250-550 B 550 5.2 6.0 3,312
100-250-575 B 575 4.9 6.2 3,555
100-250-600 B 600 5.0 5.9 3,565

10″ Length – 2.5″ ID Tight Helix Type
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
100-250-200 TH 200 6.5 6.5 1,291
100-250-225 TH 225 6.4 6.4 1,444
100-250-250 TH 250 6.3 6.3 1,575
100-250-275 TH 275 6.1 6.1 1,667
100-250-300 TH 300 6.0 6.0 1,795

10″ Length – 2.5″ ID Progressive Type
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
100-250-500V 200/500 4.7 5.1 1,834
100-250-750V 300/750 3.9 4.4 2,690

12″ Length – 2.5″ ID Barrel Type
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
120-250-060 B 60 9.6 9.6 575
120-250-090 B 90 9.1 9.1 813
120-250-100 B 100 9.0 9.0 895
120-250-115 B 115 8.7 8.7 1,091
120-250-125 B 125 8.7 8.7 1,091
120-250-135 B 135 8.5 8.5 1,157
120-250-150 B 150 7.8 9.6 1,364
120-250-160 B 160 7.8 8.8 1,407
120-250-175 B 175 7.7 8.8 1,546
120-250-185 B 185 7.7 8.7 1,608
120-250-200 B 200 7.5 8.7 1,731
120-250-225 B 225 7.4 8.5 1,905
120-250-250 B 250 7.3 8.2 2,045
120-250-275 B 275 7.1 8.1 2,219
120-250-300 B 300 6.9 8.1 2,422
120-250-325 B 325 6.8 7.9 2,570
120-250-350 B 350 6.6 7.9 2,756
120-250-375 B 375 6.5 7.6 2,866
120-250-400 B 400 6.4 7.6 3,038
120-250-450 B 450 6.1 7.6 3,421
120-250-475 B 475 6.0 7.5 3,571
120-250-500 B 500 6.0 7.2 3,622
120-250-525 B 525 6.1 6.9 3,640
120-250-550 B 550 5.8 7.2 3,940
120-250-575 B 575 5.8 7.0 4,030
120-250-600 B 600 5.8 6.9 4,132
120-250-750 B 750 5.4 6.6 4,930

12″ Length – 2.5 ” ID Tight Helix Type (Straight For Spring Rubbers)
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
120-250-150 TH 150 8.0 8.0 1,205
120-250-175 TH 175 7.9 7.9 1,385
120-250-185 TH 185 7.8 7.8 1,449
120-250-200 TH 200 7.8 7.8 1,551
120-250-225 TH 225 7.6 7.6 1,719
120-250-250 TH 250 7.6 7.6 1,890

12″ Length – 2.5″ ID Progressive Type
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
120-250-100V 30/100 6.9 7.4 571
120-250-200V 140/200 6.7 8.0 1,453
120-250-225V 140/225 6.6 7.6 1,530
120-250-250V 140/250 6.6 7.2 1,559
120-250-300V 100/300 5.9 6.7 1,448
120-250-400V 150/400 5.7 6.3 1,744
120-250-500V2 200/500 5.5 5.8 2,070

14″ Length – 2.5″ ID (Part numbers containing B are Barrel Springs, BP are Bulletproof Springs)
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
140-250-050 B 50 11.3 11.3 562
140-250-080 B 80 10.8 10.8 862
140-250-100 BP 100 10.8 10.8 1,082
140-250-125 BP 125 10.7 10.7 1,338
140-250-150 BP 150 10.5 10.5 1,570
140-250-165 BP 165 9.8 10.4 1,715
140-250-175 BP 175 9.8 10.3 1,808
140-250-185 BP 185 9.7 10.2 1,889
140-250-200 BP 200 9.7 10.1 2,030
140-250-225 B 225 8.1 9.8 2,216
140-250-250 B 250 7.8 9.7 2,429
140-250-275 B 275 8.0 9.3 2,544
140-250-300 B 300 7.7 9.8 2,939
140-250-325 B 325 7.6 9.1 2,954

14″ Length – 2.5″ ID Progressive Type
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
140-250-250V 75/250 6.9 7.6 1,334
140-250-300V 100/300 6.7 7.7 1,653

16″ Length – 2.5″ ID (Part numbers containing B are Barrel Springs, BP are Bulletproof Springs)
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
160-250-050 B 50 12.4 12.4 615
160-250-080 B 80 11.6 11.6 935
160-250-100 BP 100 12.4 12.4 1246
160-250-110 BP 110 11.9 11.9 1,308
160-250-125 BP 125 12.1 12.1 1516
160-250-150 BP 150 11.5 12.2 1827
160-250-175 BP 175 11.4 12.0 2094
160-250-200 B 200 9.6 11.5 2,308
160-250-300 B 300 8.9 10.3 3,081

20″ Length – 2.5″ ID Progressive Type
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
200-250-150 V 75/150 11.3 12.2 1,398

16″, 18″, & 20″ Length – 2.5″ ID [5.0″ OD on one end] Bulletproof Type
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
160-2550-125 BP 125 11.4 12.3 1,537
160-2550-150 BP 150 11.2 11.9 1,786
180-2550-050 BP 50 12.4 13.4 670
180-2550-080 BP 80 13.0 14.1 1,133
180-2550-100 BP 100 12.8 13.7 1,369
180-2550-125 BP 125 13.4 13.4 1,680
200-2550-80 BP 80 15.4 15.4 1,235
200-2550-100 BP 100 15.0 15.0 1,515
6″ Length – 3″ ID
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
060-300-300 300 3.7 4.2 1,252
060-300-350 350 3.7 4.0 1,406
060-300-400 400 3.6 3.9 1,575
8″ Length – 3″ ID
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
080-300-200 200 5.0 5.9 1,181
080-300-250 250 4.8 5.7 1,429
080-300-300 300 4.5 5.6 1,689
080-300-350 350 4.4 5.5 1,929
080-300-400 400 4.3 5.4 2,156
080-300-450 450 4.3 5.2 2,337
080-300-500 500 4.1 5.2 2,579
080-300-550 550 4.0 5.0 2,778
080-300-600 600 3.9 5.0 3,000
10″ Length – 3″ ID
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
100-300-125 125 7.3 7.3 915
100-300-150 150 7.2 7.2 1,075
100-300-200 200 6.0 7.3 1,457
100-300-250 250 5.7 7.0 1,762
100-300-300 300 5.5 6.9 2,067
100-300-350 350 5.5 6.6 2,301
100-300-400 400 5.1 6.6 2,646
100-300-450 450 5.3 6.2 2,799
100-300-500 500 4.9 6.3 3,169
100-300-550 550 4.9 6.1 3,366
100-300-600 600 4.8 6.1 3,638
12″ Length – 3″ ID
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
120-300-100 100 8.8 8.8 878
120-300-125 125 8.7 8.7 1,088
120-300-150 150 8.5 8.5 1,281
120-300-200 200 7.2 8.5 1,701
120-300-225 225 7.0 8.3 1,878
120-300-250 250 6.9 8.1 2,037
120-300-275 275 7.0 7.8 2,155
120-300-300 300 6.9 7.7 2,315
120-300-350 350 6.4 7.8 2,715
120-300-400 400 6.4 7.4 2,945
120-300-450 450 6.4 7.0 3,154
120-300-475 475 6.4 6.8 3,235
120-300-500 500 6.3 6.8 3,386
120-300-550 550 5.9 6.9 3,811
120-300-600 600 5.7 6.9 4,134
120-300-650 650 5.6 6.9 4,453
120-300-700 700 5.3 6.9 4,850
120-300-750 750 5.4 6.6 4,961
14″ Length – 3″ ID
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
140-300-030 30 10.6 10.6 317
140-300-040 40 10.8 10.8 433
140-300-050 50 10.8 10.8 541
140-300-080 80 10.1 10.1 809
140-300-100 100 10.0 10.0 1004
140-300-125 125 10.0 10.0 1250
140-300-150 150 9.1 10.3 1,541
140-300-200 200 8.7 9.8 1,961
140-300-225 225 8.4 9.6 2,170
140-300-250 250 8.3 9.5 2,372
140-300-275 275 8.1 9.3 2,544
140-300-350 350 7.8 8.8 3,087
140-300-400 400 7.5 8.7 3,465
140-300-450 450 7.3 8.5 3,809
140-300-500 500 7.2 8.2 4,114
140-300-550 550 7.1 8.0 4,374
140-300-600 600 7.0 7.7 4,606
140-300-650 650 6.2 7.9 5,144
16″ Length – 3″ ID (Part numbers containing BP are Bulletproof Springs)
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
160-300-100 BP 100 11.7 11.7 1,173
160-300-125 BP 125 11.5 11.5 1,442
160-300-150 BP 150 11.1 11.1 1,659
160-300-250 250 9.4 10.5 2,618
160-300-300 300 8.9 10.2 3,047
160-300-350 350 8.6 10.0 3,486
160-300-450 450 8.0 9.6 4,341
160-300-500 500 7.8 9.4 4,705
160-300-550 550 7.7 9.1 5,024
160-300-600 600 7.3 8.9 5,315
160-300-650 650 6.7 9.1 5,911
 
16″ Length – 3.5″ ID
Bulletproof Type
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
160-350-125 BP 125 11.6 11.6 1,447
160-350-140 BP 140 11.7 11.7 1,637
160-350-150 BP 150 11.7 11.7 1,749
160-350-160 BP 160 11.5 11.5 1,833
160-350-175 BP 175 11.4 11.4 1,991

18″ Length – 3.5″ ID
Bulletproof Type
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
180-350-100 BP 100 13.1 13.1 1,315
 
10″ Length – 3.75″ ID
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
100-375-200 200 6.7 7.2 1,441
100-375-250 250 6.3 6.6 1,654

12″ Length – 3.75″ ID
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
120-375-200 200 7.9 8.2 1,646
120-375-250 250 4.8 8.4 2,106

16″ Length – 3.75″ ID
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
160-375-225 225 9.9 10.8 2,427
160-375-250 250 9.4 10.4 2,589
160-375-300 300 9.4 10.2 3,059
160-375-350 350 8.8 10.2 3,569

8" Length - 1.88" ID
Straight Type

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
080-188-050
50
5.8
5.8
289
080-188-060
60
5.5
5.5
331
080-188-070
70
5.4
5.4
375
080-188-080
80
5.6
5.6
450
080-188-090
90
5.1
5.1
461
080-188-100
100
5.3
5.3
531
080-188-110
110
5.6
5.6
611
080-188-120
120
5.0
5.0
595
080-188-130
130
5.2
5.2
676
080-188-140
140
4.9
5.4
761
080-188-150
150
4.6
5.6
838
080-188-160
160
4.8
5.3
849
080-188-170
170
4.8
5.2
880
080-188-175
175
4.6
5.2
917
080-188-180
180
4.5
5.3
955
080-188-185
185
4.7
5.3
941
080-188-190
190
4.6
5.2
979
080-188-200
200
4.3
5.3
1,056
080-188-210
210
4.6
5.0
1,056
080-188-220
220
4.3
5.1
1,122
080-188-230
230
4.6
4.8
1,100
080-188-240
240
4.4
4.9
1,177
080-188-250
250
4.2
5.0
1,252
080-188-260
260
4.3
4.8
1,259
080-188-270
270
4.4
4.6
1,257
080-188-275
275
4.3
4.7
1,294
080-188-290
290
4.1
4.8
1,409
080-188-300
300
4.3
4.5
1,356
080-188-325
325
3.9
4.8
1,545
080-188-350
350
4.0
4.6
1,594
NEW 080-188-375
375
4.0
4.4
1,639
NEW 080-188-400
400
3.9
4.3
1,717
NEW 080-188-425
425
3.9
4.1
1,723

8" Length - 1.88" ID
Tight Helix Type

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
080-188-140 TH
140
4.2
4.2
590
080-188-150 TH
150
3.9
3.9
585
080-188-160 TH
160
4.1
4.1
655
080-188-170 TH
170
3.7
3.7
636

10" Length - 1.88" ID
Straight Type

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
100-188-100
100
6.1
6.5
655
100-188-110
110
6.1
6.9
752
100-188-120
120
6.2
6.5
785
100-188-130
130
5.7
6.8
882

10" Length - 1.88" ID
Barrel Type (Outside Diameter is set at 3")

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
100-188-100B3
100
6.5
7.5
754
100-188-110B3
110
6.3
7.4
829
100-188-120B3
120
6.2
7.3
877
100-188-130B3
130
6.2
7.0
903
100-188-140B3
140
5.9
7.2
1,014
100-188-150B3
150
6.1
6.9
1,042
100-188-160B3
160
5.7
7.0
1,144
100-188-170B3
170
5.8
6.9
1,157
100-188-180B3
180
5.8
6.7
1,206
100-188-190B3
190
5.8
6.4
1,219
100-188-200B3
200
5.7
6.5
1,317
100-188-220B3
220
5.7
6.4
1,402
100-188-240B3
240
5.6
6.3
1,510
100-188-260B3
260
5.4
6.3
1,612
100-188-280B3
280
5.4
5.9
1,651
100-188-300B3
300
5.1
6.1
1,845
100-188-325B3
325
5.2
5.9
1,905
100-188-350B3
350
5.0
5.7
2,028

4" Length - 2.5" ID
Straight Type

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
040-250-300
300
2.6
2.8
844
040-250-350
350
2.5
2.7
960
040-250-400
400
2.5
2.7
1,066

6" Length - 2.5" Id
Barrel Type

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
060-250-100 B
100
4.7
4.7
467
060-250-125 B
125
4.5
4.5
567
060-250-150 B
150
4.5
4.5
670
060-250-175 B
175
4.4
4.4
774
060-250-200 B
200
4.1
4.3
855
060-250-250 B
250
3.9
4.3
1,067
060-250-300 B
300
3.8
4.2
1,248
060-250-350 B
350
3.7
4.1
1,433

7" Length - 2.5" ID
Barrel Type

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
070-250-350 B
350
4.6
4.6
1,598
070-250-400 B
400
4.4
4.4
1,780
070-250-450 B
450
4.4
4.4
1,967
070-250-500 B
500
4.3
4.3
2,146
070-250-550 B
550
4.2
4.2
2,317
070-250-600 B
600
4.1
4.1
2,480
070-250-650 B
650
4.1
4.1
2,687
070-250-700 B
700
4.1
4.1
2,866
070-250-750 B
750
4.0
4.0
2,982

8" Length - 2.5" ID
Barrel Type

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
080-250-450 B
450
4.6
5.1
2,285
080-250-500 B
500
4.5
5.0
2,480
080-250-550 B
550
4.5
4.9
2,685
080-250-600 B
600
4.4
4.8
2,906
080-250-650 B
650
4.3
4.7
3,071

8" Length - 2.5" ID
Straight Type

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
080-250-100
100
5.8
5.8
582
080-250-125
125
5.6
5.6
710
080-250-150
150
5.7
5.7
877
080-250-175
175
5.2
5.7
985
080-250-200
200
5.1
5.8
1,151
080-250-225
225
4.9
5.7
1,281
080-250-250
250
4.8
5.6
1,400
080-250-275
275
4.7
5.5
1,515
080-250-300
300
4.7
5.4
1,621
080-250-350
350
4.6
5.2
1,837
080-250-375
375
4.4
5.2
1,954
080-250-400
400
4.4
5.2
2,065
080-250-425
425
4.3
5.1
2,172
080-250-450
450
4.3
5.1
2,274
080-250-475
475
4.3
5.0
2,371
080-250-500
500
4.2
4.9
2,461
080-250-525
525
4.2
4.8
2,546
080-250-550
550
4.1
4.9
2,678
080-250-600
600
4.0
4.8
2,883
080-250-650
650
4.0
4.6
3,010
080-250-700
700
3.9
4.5
3,180
080-250-1100
1100
3.5
3.9
4,339
080-250-1300
1300
3.2
4.0
5,220
080-250-1400
1400
3.2
3.8
5,298
080-250-1500
1500
3.2
3.5
5,309
080-250-1600
1600
3.0
3.8
6,041

10" Length - 2.5" ID
Barrel Type

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
100-250-080 B
80
7.8
7.8
626
100-250-100 B
100
7.6
7.6
765
100-250-115 B
115
7.3
7.3
836
100-250-125 B
125
7.3
7.3
917
100-250-135 B
135
7.1
7.1
955
100-250-150 B
150
6.8
8.2
1,152
100-250-160 B
160
6.7
7.6
1,204
100-250-175 B
175
6.5
7.6
1,325
100-250-185 B
185
6.4
7.6
1,397
100-250-200 B
200
6.4
7.4
1,480
100-250-225 B
225
6.3
7.2
1,622
100-250-250 B
250
6.1
7.1
1,780
100-250-275 B
275
5.9
7.1
1,959
100-250-300 B
300
5.8
7.0
2,103
100-250-325 B
325
5.6
7.0
2,263
100-250-350 B
350
5.6
6.8
2,384
100-250-375 B
375
5.6
6.7
2,496
100-250-400 B
400
5.5
6.6
2,629
100-250-425 B
425
5.4
6.5
2,761
100-250-450 B
450
5.3
6.4
2,889
100-250-475 B
475
5.4
6.2
2,954
100-250-500 B
500
5.3
6.1
3,051
100-250-525 B
525
5.2
6.1
3,226
100-250-550 B
550
5.2
6.0
3,312
100-250-575 B
575
4.9
6.2
3,555
100-250-600 B
600
5.0
5.9
3,565

10" Length - 2.5" ID
Tight Helix Type

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
100-250-200 TH
200
6.5
6.5
1,291
100-250-225 TH
225
6.4
6.4
1,444
100-250-250 TH
250
6.3
6.3
1,575
100-250-275 TH
275
6.1
6.1
1,667
100-250-300 TH
300
6.0
6.0
1,795

10" Length - 2.5" ID
Progressive Type

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
100-250-500V
200/500
4.7
5.1
1,834
100-250-750V
300/750
3.9
4.4
2,690

12" Length - 2.5" ID
Barrel Type

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
120-250-060 B
060
9.6
9.6
575
120-250-090 B
090
9.1
9.1
813
120-250-100 B
100
9.0
9.0
895
120-250-115 B
115
8.7
8.7
1,091
120-250-125 B
125
8.7
8.7
1,091
120-250-135 B
135
8.5
8.5
1,157
120-250-150 B
150
7.8
9.1
1,365
120-250-160 B
160
7.8
8.8
1,407
120-250-175 B
175
7.7
8.8
1,546
120-250-185 B
185
7.7
8.7
1,608
120-250-200 B
200
7.5
8.7
1,731
120-250-225 B
225
7.4
8.5
1,905
120-250-250 B
250
7.3
8.2
2,045
120-250-275 B
275
7.1
8.1
2,219
120-250-300 B
300
6.9
8.1
2,422
120-250-325 B
325
6.8
7.9
2,570
120-250-350 B
350
6.6
7.9
2,756
120-250-375 B
375
6.5
7.6
2,866
120-250-400 B
400
6.4
7.6
3,038
120-250-450 B
450
6.1
7.6
3,421
120-250-475 B
475
6.0
7.5
3,571
120-250-500 B
500
6.0
7.2
3,622
120-250-525 B
525
6.1
6.9
3,640
120-250-550 B
550
5.8
7.2
3,940
120-250-575 B
575
5.8
7.0
4,030
120-250-600 B
600
5.8
6.9
4,132
120-250-750 B
750
5.4
6.6
4,930

12" Length - 2.5" ID
Tight Helix Type
(Straight For Spring Rubbers)

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
120-250-150 TH
150
8.0
8.0
1,205
120-250-175 TH
175
7.9
7.9
1,385
120-250-185 TH
185
7.8
7.8
1,449
120-250-200 TH
200
7.8
7.8
1,551
120-250-225 TH
225
7.6
7.6
1,719
120-250-250 TH
250
7.6
7.6
1,890
120-250-275 TH
275
7.4
7.4
2,046

12" Length - 2.5" ID
Progressive Type

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
120-250-100V
30/100
6.9
7.4
571
120-250-200V
140/200
6.7
8.0
1,453
120-250-225V
140/225
6.6
7.6
1,530
120-250-250V
140/250
6.6
7.2
1,559
120-250-300V
100/300
5.9
6.7
1,448
120-250-400V
150/400
5.7
6.3
1,744
120-250-500V2
200/500
5.5
5.8
2,070

14" Length - 2.5" ID

(Part numbers containing B are Barrel Springs, BP are Bulletproof Springs)

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
140-250-050 B
50
11.3
11.3
562
140-250-080 B
80
10.8
10.8
862
140-250-100 BP
100
10.8
10.8
1,082
140-250-125 BP
125
10.7
10.7
1,338
140-250-150 BP
150
10.5
10.5
1,570
140-250-165 BP
165
9.8
10.4
1,715
140-250-175 BP
175
9.8
10.3
1,808
140-250-185 BP
185
9.7
10.2
1,889
140-250-200 BP
200
9.7
10.1
2,030
140-250-225 B
225
8.1
9.8
2,216
140-250-250 B
250
7.8
9.7
2,429
140-250-275 B
275
8.0
9.3
2,544
140-250-300 B
300
7.7
9.8
2,939
140-250-325 B
325
7.6
9.1
2,954

14" Length - 2.5" ID
Progressive Type

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
140-250-250 V
75/250
6.9
7.6
1,334
140-250-300 V
100/300
6.7
7.7
1,653

16" Length - 2.5" ID

(Part numbers containing B are Barrel Springs, BP are Bulletproof Springs)

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
160-250-050 B
50
12.4
12.4
615
160-250-080 B
80
11.6
11.6
935
160-250-100 BP
100
12.4
12.4
1,246
160-250-110 BP
110
11.9
11.9
1,308
160-250-125 BP
125
12.1
12.1
1,516
160-250-150 BP
150
11.5
12.2
1,827
160-250-175 BP
175
11.4
12.0
2,094
160-250-200 B
200
9.6
11.5
2,308
160-250-300 B
300
8.9
10.3
3,081

20" Length - 2.5" ID
Progressive Type

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
200-250-150 V
75/150
11.3
12.2
1,398

16", 18", & 20" Length - 2.5" ID [5.0 od on one end]
Bulletproof Type

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
160-2550-125 BP
125
11.4
12.3
1,537
160-2550-150 BP
150
11.2
11.9
1,786
180-2550-050 BP
50
12.4
13.4
670
180-2550-080 BP
80
13.0
14.1
1,133
180-2550-100 BP
100
12.8
13.7
1,369
180-2550-125 BP
125
13.4
13.4
1,680
200-2550-080 BP
80
15.4
15.4
1,235
200-2550-100 BP
100
15.0
15.0
1,515

6" Length - 3" ID

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
060-300-300
300
3.7
4.2
1,252
060-300-350
350
3.7
4.0
1,406
060-300-400
400
3.6
3.9
1,575

8" Length - 3" ID

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
080-300-200
200
5.0
5.9
1,181
080-300-250
250
4.8
5.7
1,429
080-300-300
300
4.5
5.6
1,689
080-300-350
350
4.4
5.5
1,929
080-300-400
400
4.3
5.4
2,156
080-300-450
450
4.3
5.2
2,337
080-300-500
500
4.1
5.2
2,579
080-300-550
550
4.0
5.0
2,778
080-300-600
600
3.9
5.0
3,000

10" Length - 3" ID

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
100-300-125
125
7.3
7.3
915
100-300-150
150
7.2
7.2
1,075
100-300-200
200
6.0
7.3
1,457
100-300-250
250
5.7
7.0
1,762
100-300-300
300
5.5
6.9
2,067
100-300-350
350
5.5
6.6
2,301
100-300-400
400
5.1
6.6
2,646
100-300-450
450
5.3
6.2
2,799
100-300-500
500
4.9
6.3
3,169
100-300-550
550
4.9
6.1
3,366
100-300-600
600
4.8
6.1
3,638

12" Length - 3" ID

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
120-300-100
100
8.8
8.8
878
120-300-125
125
8.7
8.7
1,088
120-300-150
150
8.5
8.5
1,281
120-300-200
200
7.2
8.5
1,701
120-300-225
225
7.0
8.3
1,878
120-300-250
250
6.9
8.1
2,037
120-300-275
275
7.0
7.8
2,155
120-300-300
300
6.9
7.7
2,315
120-300-350
350
6.4
7.8
2,715
120-300-400
400
6.4
7.4
2,945
120-300-450
450
6.4
7.0
3,154
120-300-475
475
6.4
6.8
3,235
120-300-500
500
6.3
6.8
3,386
120-300-550
550
5.9
6.9
3,811
120-300-600
600
5.7
6.9
4,134
120-300-650
650
5.6
6.9
4,453
120-300-700
700
5.3
6.9
4,850
120-300-750
750
5.4
6.6
4,961

14" Length - 3" ID

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
140-300-030
30
10.6
10.6
317
140-300-040
40
10.8
10.8
433
140-300-050
50
10.8
10.8
541
140-300-080
80
10.1
10.1
809
140-300-100
100
10.0
10.0
1,004
140-300-125
125
10.0
10.0
1,250
140-300-150
150
9.1
10.3
1,541
140-300-200
200
8.7
9.8
1,961
140-300-225
225
8.4
9.6
2,170
140-300-250
250
8.3
9.5
2,372
140-300-275
275
8.1
9.3
2,544
140-300-350
350
7.8
8.8
3,087
140-300-400
400
7.5
8.7
3,465
140-300-450
450
7.3
8.5
3,809
140-300-500
500
7.2
8.2
4,114
140-300-550
550
7.1
8.0
4,374
140-300-600
600
7.0
7.7
4,606
140-300-650
650
6.2
7.9
5,144

16" Length - 3" ID

(Part numbers containing BP are Bulletproof Springs)

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
160-300-100 BP
100
11.7
11.7
1,173
160-300-125 BP
125
11.5
11.5
1,442
160-300-150 BP
150
11.1
11.1
1,659
160-300-250
250
9.4
10.5
2,618
160-300-300
300
8.9
10.2
3,047
160-300-350
350
8.6
10.0
3,486
160-300-450
450
8.0
9.6
4,341
160-300-500
500
7.8
9.4
4,705
160-300-550
550
7.7
9.1
5,024
160-300-600
600
7.3
8.9
5,315
160-300-650
650
6.7
9.1
5,911

16" Length - 3.5" ID
Bulletproof type

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
160-350-125 BP
125
11.6
11.6
1,447
160-350-140 BP
140
11.7
11.7
1,637
160-350-150 BP
150
11.7
11.7
1,749
160-350-160 BP
160
11.5
11.5
1,833
160-350-175 BP
175
11.4
11.4
1,991

18" Length - 3.5" ID
Bulletproof type

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
180-350-100 BP
100
13.1
13.1
1,315

10" length - 3.75" ID

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
100-375-200
200
6.7
7.2
1,441
100-375-250
250
6.3
6.6
1,654

12" Length - 3.75" ID

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
120-375-200
200
7.9
8.2
1,646
120-375-250
250
4.8
8.4
2,106

16" Length - 3.75" ID

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
160-375-225
225
9.9
10.8
2,427
120-375-250
250
9.4
10.4
2,589
120-375-300
300
9.4
10.2
3,059
120-375-350
350
8.8
10.2
3,569
Swift Springs - Standard Coilover Springs

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