Conventional Springs.

Circle Track Precision - Engineered for victory

Harness the power of meticulous engineering with Swift’s Conventional Springs. Each spring is a testament to our unyielding commitment to performance. Embrace the competitive edge that comes with the racing spirit.

Innovative by design.

Drawing from a wealth of global racing insights, Swift has crafted springs that resonate with the American racer’s soul. We have engineered corner specific springs with the optimal spring design to maximize vehicle potential on the track. Our springs aren’t just built; they’re finely tuned instruments of victory for oval track glory.

Quality That Transcends Expectations.

American racers demand excellence. Swift delivers with springs engineered from racer-driven data, transcending the traditional with a slight yet pivotal design evolution. Our springs don’t just change the ride–they transform the race.

Material mastery.

Swift Springs aren’t ordinary–they’re extraordinary. Manufactured with our superior HS5.TW steel, they’re lighter, more responsive, and engineered to amplify every advantage. Fewer coils, more stroke, less weight – welcome to the pinnacle performance.

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.

Specifications at a glance.

Our detailed specifications are meticulously listed to provide you with the precise information you need to choose the perfect springs for your racing endeavors. Swift makes it simple to match your vehicle’s demands with our superior solutions.

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

6" Length [OD 5"]

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
060-500-175
175
3.8
4.1
721
060-500-200
200
3.7
4.1
820
060-500-225
225
3.6
4.1
913
060-500-250
250
3.4
4.1
1,021
060-500-700
700
3.0
3.7
2,597
060-500-800
800
2.8
3.6
2,892
6″ Length [OD 5″]
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
060-500-175 175 3.8 4.1 721
060-500-200 200 3.7 4.1 820
060-500-225 225 3.6 4.1 913
060-500-250 250 3.4 4.1 1,021
060-500-700 700 3.0 3.7 2,597
060-500-800 800 2.8 3.6 2,892
8″ Length [OD 5″] – Front Springs
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
080-500-400 F 400 5.1 5.1 2,041
080-500-425 F 425 5.0 5.0 2,149
080-500-450 F 450 4.9 4.9 2,218
080-500-475 F 475 4.8 4.8 2,310
080-500-500 F 500 4.7 4.7 2,361
080-500-525 F 525 4.8 4.8 2,531
080-500-550 F 550 4.6 4.6 2,566
080-500-600 F 600 4.6 4.6 2,806
9.5″ Length [OD 5″] – Hight Travel Front Springs
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
950-500-450F 450 5.8 6.5 2,923
950-500-500F 500 5.6 6.5 3,228
950-500-550F 550 5.5 6.3 3,486
9.5″ Length [OD 5″] – Front Springs
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
950-500-350 350 5.9 6.5 2,258
950-500-375 375 5.8 6.4 2,410
950-500-400 400 5.7 6.5 2,588
950-500-425 425 5.6 6.4 2,731
950-500-450 450 5.7 6.3 2,804
950-500-475 475 5.7 6.3 2,914
950-500-500 500 5.7 6.1 3,051
950-500-525 525 5.6 6.0 3,153
950-500-550 550 5.7 5.8 3,204
950-500-575 575 5.4 5.8 3,417
950-500-600 600 5.5 5.7 3,447
950-500-625 625 5.3 5.9 3,671
950-500-650 650 5.3 5.8 3,763
950-500-700 700 5.3 5.5 3,830
950-500-750 750 5.0 5.7 4,251
950-500-800 800 5.1 5.4 4,285
950-500-850 850 4.8 5.6 4,719
950-500-950 950 4.7 5.3 5,012
11″ Length [OD 5″] – Front Springs
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
110-500-300F 300 6.8 7.2 2,180
110-500-350F 350 6.7 7.1 2,498
110-500-375 F 375 6.6 7.0 2,623
110-500-400F 400 6.4 7.0 2,784
110-500-425 F 425 6.3 6.9 2,939
110-500-450 F 450 6.3 6.7 3,034
11″ Length [OD 5″] (Part numbers containing BP are Bulletproof Springs)
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
110-500-080 80 8.7 8.7 694
110-500-100 100 8.6 8.6 858
110-500-125 BP 125 8.5 8.7 1,091
110-500-150 BP 150 8.5 8.6 1,292
110-500-175 BP 175 7.9 8.4 1,479
110-500-200 BP 200 7.6 8.5 1,706
110-500-225 BP 225 7.8 8.2 1,847
110-500-250 250 7.4 8.3 2,066
110-500-275 275 6.9 8.2 2,253
110-500-300 300 6.9 8.0 2,402
110-500-325 325 6.8 7.9 2,568
110-500-350 350 6.6 7.9 2,763
11″ Length Rear [OD”] Tight Helix Springs(TH)
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
110-500-200 TH 200 5.4 5.4 1,079
110-500-225 TH 225 5.0 5.0 1,133
110-500-250 TH 250 4.6 4.6 1,152
13″ Length [OD 5″] (Part numbers containing BP are Bulletproof Springs)
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
130-500-050 50 10.5 10.5 525
130-500-080 80 10.4 10.4 827
130-500-100 BP 100 10.0 10.2 1,028
130-500-125 BP 125 10.0 10.2 1,279
130-500-150 BP 150 9.7 10.1 1,517
130-500-175 BP 175 9.4 9.9 1,737
130-500-200 BP 200 9.2 9.7 1,940
130-500-225 BP 225 9.2 9.8 2,205
130-500-215 215 8.7 9.6 2,079
130-500-235 235 8.6 9.6 2,249
130-500-250 250 8.5 9.5 2,381
130-500-275 275 8.3 9.5 2,600
130-500-300 300 8.4 9.1 2,733
130-500-450 450 7.5 8.6 3,873
130-500-500 500 7.4 8.3 4,173
13″ Length Rear [OD 5″] Tight Helix Springs (TH)
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
130-500-175 TH 175 6.7 6.7 1,164
130-500-200 TH 200 6.3 6.3 1,268
130-500-215 TH 215 6.3 6.3 1,363
130-500-225 TH 225 5.9 5.9 1,338
130-500-235 TH 235 6.2 6.2 1,462
130-500-250 TH 250 5.9 5.9 1,486
14″ Length [OD 5″]
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
140-500-175 175 9.3 10.6 1,852
140-500-200 200 8.9 10.5 2,097
140-500-225 225 8.8 10.4 2,355
140-500-250 250 8.8 10.2 2,540
140-500-275 275 8.5 10.2 2,809
140-500-300 300 8.3 10.1 3,034
140-500-325 325 8.3 9.7 3,164
140-500-350 350 8.1 9.7 3,408
16″ Length [OD 5″] (Part numbers containing BP are Bulletproof Springs)
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
160-500-050 50 12.6 12.6 628
160-500-065 65 12.1 12.1 785
160-500-080 80 12.2 12.2 977
160-500-100 100 12.1 12.1 1,219
160-500-112 112 12.0 12.0 1,349
160-500-125 BP 125 12.0 12.3 1,541
160-500-150 BP 150 11.7 12.0 1,808
160-500-175 BP 175 10.7 12.0 2,100
160-500-200 200 10.5 11.7 2,350
160-500-225 225 10.4 11.4 2,575
18″ Length [OD 5″]
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
180-500-080 80 13.3 13.3 1,069
180-500-100 100 13.3 13.3 1,334
20″ Length [OD 5″] (Part numbers containing V are Progressive Springs)
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
200-500-050 50 15.0 15.0 747
200-500-065 65 15.5 15.5 1008
200-500-080 80 15.0 15.0 1,197
200-500-100 100 15.0 15.0 1,497
200-500-125 125 14.6 14.6 1,828
200-500-150 150 13.1 14.5 2,179
200-500-225V 75/225 12.9 13.3 1,464
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
067-500-600-2000 600-2000 2.9 3.0 3,521

9.5″ Length [OD 5.5″] – Front Springs
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
950-550-325 325 6.1 6.8 2,201
950-550-400 400 6.0 6.5 2,583
950-550-425 425 5.8 6.5 2,744
950-550-450 450 5.7 6.4 2,870
950-550-500 500 5.5 6.4 3,189
950-550-550 550 5.5 6.2 3,400
950-550-600 600 5.5 5.9 3,567
950-550-650 650 5.1 6.1 3,992
950-550-700 700 5.1 5.9 4,134
950-550-750 750 4.8 6.1 4,558
950-550-800 800 5.0 5.7 4,567
950-550-850 850 4.7 5.9 4,985
950-550-900 900 4.3 4.3 3,843
950-550-950 950 4.5 4.5 4,275
950-550-1000 1000 4.1 4.1 4,100
950-550-1050 1050 4.3 4.3 4,463
950-550-1100 1100 4.3 4.3 4,730
950-550-1200 1200 3.8 3.8 4,560
11″ Length [OD 5.5″] – Front Springs
PART # SPRING RATE USABLE STROKE MAX STROKE MAX LOAD
lbs/inch inch inch lbs
110-550-200 200 8.1 8.1 1,627
110-550-250 250 7.8 7.8 1,947
110-550-275 275 7.7 7.7 2,123
110-550-300 300 7.6 7.6 2,293
110-550-350 350 6.5 7.7 2,701
110-550-375 375 6.3 7.7 2,879
110-550-400 400 6.2 7.7 3,071
110-550-425 425 6.1 7.5 3,196
110-550-900 900 5.0 5.0 4,500
110-550-1000 1000 5.5 5.5 5,500
110-550-1100 1100 4.9 4.9 5,390
 

8" Length [OD 5"] - Front Springs

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
080-500-400 F
400
5.1
5.1
2,041
080-500-425 F
425
5.0
5.0
2,149
080-500-450 F
450
4.9
4.9
2,218
080-500-475 F
475
4.8
4.8
2,310
080-500-500 F
500
4.7
4.7
2,361
080-500-525 F
525
4.8
4.8
2,531
080-500-550 F
550
4.6
4.6
2,566
080-500-600 F
600
4.6
4.6
2,806

9.5" Length [OD 5"] - High Travel Front Springs

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
950-500-450 F
450
5.8
6.5
2,923
950-500-500 F
500
5.6
6.5
3,228
950-500-550 F
550
5.5
6.3
3,486

9.5" Length [OD 5"] - Front Springs

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
950-500-350
350
5.9
6.5
2,258
950-500-375
375
5.8
6.4
2,410
950-500-400
400
5.7
6.5
2,588
950-500-425
425
5.6
6.4
2,731
950-500-450
450
5.7
6.3
2,804
950-500-475
475
5.7
6.3
2,914
950-500-500
500
5.7
6.1
3,051
950-500-525
525
5.6
6.0
3,153
950-500-550
550
5.7
5.8
3,204
950-500-575
575
5.4
5.8
3,417
950-500-600
600
5.5
5.7
3,447
950-500-625
625
5.3
5.9
3,671
950-500-650
650
5.3
5.8
3,763
950-500-700
700
5.3
5.5
3,763
950-500-750
750
5.0
5.7
4,251
950-500-800
800
5.1
5.4
4,285
950-500-850
850
4.8
5.6
4,719
950-500-950
950
4.7
5.3
5,012

11" Length [OD 5"] - Front Springs

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
110-500-300 F
300
6.8
7.2
2,180
110-500-350 F
350
6.7
7.1
2,498
110-500-375 F
375
6.6
7.0
2,623
110-500-400 F
400
6.4
7.0
2,784
110-500-425 F
425
6.3
6.9
2,939
110-500-450 F
450
6.3
6.7
3,034

11" Length [OD 5"]

(Part numbers containing BP are Bulletproof Springs)

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
110-500-080
80
8.7
8.7
694
110-500-100
100
8.6
8.6
858
110-500-125 BP
125
8.5
8.7
1,091
110-500-150 BP
150
8.5
8.6
1,292
110-500-175 BP
175
7.9
8.4
1,479
110-500-200 BP
200
7.6
8.5
1,706
110-500-225 BP
225
7.8
8.2
1,847
110-500-250
250
7.4
8.3
2,066
110-500-275
275
6.9
8.2
2,253
110-500-300
300
6.9
8.0
2,402
110-500-325
325
6.8
7.9
2,568
110-500-350
350
6.6
7.9
2,763

11" Length Rear [OD 5"]
Tight Helix Springs (TH)

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
110-500-200 TH
200
5.4
5.4
1,079
110-500-225 TH
225
5.0
5.0
1,133
110-500-250 TH
250
4.6
4.6
1,152

13" Length [OD 5"]

(Part numbers containing BP are Bulletproof Springs)

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
130-500-050
50
10.5
10.5
525
130-500-080
80
10.4
10.4
827
130-500-100 BP
100
10.0
10.2
1,028
130-500-125 BP
125
10.0
10.2
1,279
130-500-150 BP
150
9.7
10.1
1,517
130-500-175 BP
175
9.4
9.9
1,737
130-500-200 BP
200
9.2
9.7
1,940
130-500-225 BP
225
9.2
9.8
2,205
130-500-215
215
8.7
9.6
2,079
130-500-235
235
8.6
9.6
2,249
130-500-250
250
8.5
9.5
2,381
130-500-275
275
8.3
9.5
2,600
130-500-300
300
8.4
9.1
2,733
130-500-450
450
7.5
8.6
3,873
130-500-500
500
7.4
8.3
4,173

13" Length Rear [od 5" ]
Tight Helix Springs (TH)

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
130-500-175 TH
175
6.7
6.7
1,164
130-500-200 TH
200
6.3
6.3
1,268
130-500-215 TH
215
6.3
6.3
1,363
130-500-225 TH
225
5.9
5.9
1,338
130-500-235 TH
235
6.2
6.2
1,462
130-500-250 TH
250
5.9
5.9
1,486

14" Length [ OD 5" ]

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
140-500-175
175
9.3
10.6
1,852
140-500-200
200
8.9
10.5
2,097
140-500-225
225
8.8
10.4
2,355
140-500-250
250
8.8
10.2
2,540
140-500-275
275
8.5
10.2
2,809
140-500-300
300
8.3
10.1
3,034
140-500-325
325
8.3
9.7
3,164
140-500-350
350
8.1
9.7
3,408

16" Length [OD 5" ]

(Part numbers containing BP are Bulletproof Springs)

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
160-500-050
50
12.6
12.6
628
160-500-065
65
12.1
12.1
785
160-500-080
80
12.2
12.2
977
160-500-100
100
12.1
12.1
1,219
160-500-112
112
12.0
12.0
1,349
160-500-125 BP
125
12.0
12.3
1,541
160-500-150 BP
150
11.7
12.0
1,808
160-500-175 BP
175
10.7
12.0
2,100
160-500-200
200
10.5
11.7
2,350
160-500-225
225
10.4
11.4
2,575

18" Length [od 5" ]

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
180-500-080
80
13.3
13.3
1,069
180-500-100
100
13.3
13.3
1,334

20" Length [ od 5" ]

(Part numbers containing V are Progressive Springs)

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
200-500-050
50
15.0
15.0
747
200-500-065
65
15.5
15.5
1,008
200-500-080
080
15.0
15.0
1,197
200-500-100
100
15.0
15.0
1,497
200-500-125
125
14.6
14.6
1,828
200-500-150
150
13.1
14.5
2,179
200-500-225V
225V
12.9
13.3
1,464

Pull Bar Springs

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
067-500-600-2000
600-2000
2.9
3.0
3,521

9.5" Length [ OD 5.5" ] - Front Springs

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
950-550-325
325
6.1
6.8
2,201
950-550-400
400
6.0
6.5
2,583
950-550-425
425
5.8
6.5
2,744
950-550-450
450
5.7
6.4
2,870
950-550-500
500
5.5
6.4
3,189
950-550-550
550
5.5
6.2
3,400
950-550-600
600
5.5
5.9
3,567
950-550-650
650
5.1
6.1
3,992
950-550-700
700
5.1
5.9
4,134
950-550-750
750
4.8
6.1
4,558
950-550-800
800
5.0
5.7
4,567
950-550-850
850
4.7
5.9
4,985
950-550-900
900
4.3
4.3
3,843
950-550-950
950
4.5
4.5
4,275
950-550-1000
1000
4.1
4.1
4,100
950-550-1050
1050
4.3
4.3
4,463
950-550-1100
1100
4.3
4.3
4,730
950-550-1200
1200
3.8
3.8
4,560

11" Length [ OD 5.5" ] - Front Springs

Spring Rate
Usable Stroke
Max Stroke
Max Load
Part Number
lbs/inch
inch
inch
lbs
110-550-200
200
8.1
8.1
1,627
110-550-250
250
7.8
7.8
1,947
110-550-275
275
7.7
7.7
2,123
110-550-300
300
7.6
7.6
2,293
110-550-350
350
6.5
7.7
2,701
110-550-375
375
6.3
7.7
2,879
110-550-400
400
6.2
7.7
3,071
110-550-425
425
6.1
7.5
3,196
110-550-900
900
5.0
5.0
4,500
110-550-1000
1000
5.5
5.5
5,500
110-550-1100
1100
4.9
4.9
5,390
Swift Springs - Standard Conventional Springs

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