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Swift Springs has designed and engineered the standard measurement springs based on data collected from racers at the top of their class. 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. Swift specifically designed a standard measurement race springs to accommodate American race industries including oval track racing, and drag racing, and offroad racing.
Tight Helix springs feature more coils on the spring than the standard versions which reduces spring deflection (bowing) when being compressed. This design can save shocks from being damaged by spring deflection but has a few drawbacks such as a higher overall un-sprung weight as well as a reduced spring stroke.
| DMS Part # | Swift Part # | Outside Diameter (in.) | Length (in.) | Rate (lbs/in) | Useable Stroke (in.) | Maximum Stroke (in.) | Maximum Load (lbs) |
|---|---|---|---|---|---|---|---|
| SWS-5-13-175TH | 130-500-175 TH | 5 | 13 | 175 | 6.7 | 6.7 | 1164 |
| SWS-5-13-200TH | 130-500-200 TH | 5 | 13 | 200 | 6.3 | 6.3 | 1268 |
| SWS-5-13-215TH | 130-500-215 TH | 5 | 13 | 215 | 6.3 | 6.3 | 1363 |
| SWS-5-13-225TH | 130-500-225 TH | 5 | 13 | 225 | 5.9 | 5.9 | 1338 |
| SWS-5-13-235TH | 130-500-235 TH | 5 | 13 | 235 | 6.2 | 6.2 | 1462 |
| SWS-5-12-200TH | 120-500-200 TH | 5 | 12 | 200 | 5.7 | 5.7 | 1150 |
| SWS-5-12-225TH | 120-500-225 TH | 5 | 12 | 225 | 5.6 | 5.6 | 1258 |
| SWS-5-12-250TH | 120-500-250 TH | 5 | 12 | 250 | 5.6 | 5.6 | 1388 |
| SWS-5-11-200TH | 110-500-200 TH | 5 | 11 | 200 | 5.4 | 5.4 | 1079 |
| SWS-5-11-225TH | 110-500-225 TH | 5 | 11 | 225 | 5 | 5 | 1133 |
| SWS-5-11-200TH | 110-500-250 TH | 5 | 11 | 250 | 4.6 | 4.6 | 1152 |
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