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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.
Swift designed barrel springs with ease and consistency of vehicle setup in mind, our barrel springs design have a maximum of 4" outer diameter (Usually located on the center coil of the spring) except B5 and B3 series. 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.
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 # | Inside Diameter (in.) | Length (in.) | Rate (lbs/in) | Useable Stroke (in.) | Maximum Stroke (in.) | Maximum Load (lbs) | Coil Style |
---|---|---|---|---|---|---|---|---|
SWS-163-45-070B | 045-163-070 B | 1.63 | 4.5 | 70 | 2.6 | 3.5 | 245 | Barrel |
SWS-163-45-080B | 045-163-080 B | 1.63 | 4.5 | 80 | 2.6 | 3.5 | 277 | Barrel |
SWS-163-45-090B | 045-163-090 B | 1.63 | 4.5 | 90 | 2.4 | 3.4 | 308 | Barrel |
SWS-163-45-100B | 045-163-100 B | 1.63 | 4.5 | 100 | 2.4 | 3.4 | 339 | Barrel |
SWS-163-45-110B | 045-163-110 B | 1.63 | 4.5 | 110 | 2.4 | 3.3 | 368 | Barrel |
SWS-163-45-120B | 045-163-120 B | 1.63 | 4.5 | 120 | 2.4 | 3.3 | 397 | Barrel |
SWS-163-45-130B | 045-163-130 B | 1.63 | 4.5 | 130 | 2.4 | 3.2 | 420 | Barrel |
SWS-163-45-140B | 045-163-140 B | 1.63 | 4.5 | 140 | 2.4 | 3.2 | 452 | Barrel |
SWS-163-45-070TH | 045-163-070 TH | 1.63 | 4.5 | 70 | 2.7 | 2.7 | 190 | Tight Helix |
SWS-163-45-080TH | 045-163-080 TH | 1.63 | 4.5 | 80 | 2.5 | 2.5 | 202 | Tight Helix |
SWS-163-45-090TH | 045-163-090 TH | 1.63 | 4.5 | 90 | 2.4 | 2.4 | 220 | Tight Helix |
SWS-163-45-100TH | 045-163-100 TH | 1.63 | 4.5 | 100 | 2.4 | 2.4 | 236 | Tight Helix |
SWS-163-45-110TH | 045-163-110 TH | 1.63 | 4.5 | 110 | 2.6 | 2.6 | 281 | Tight Helix |
SWS-163-45-120TH | 045-163-120 TH | 1.63 | 4.5 | 120 | 2.3 | 2.3 | 274 | Tight Helix |
SWS-163-45-130TH | 045-163-130 TH | 1.63 | 4.5 | 130 | 2.4 | 2.4 | 317 | Tight Helix |