Product Details
Swift Springs Standard Coilover Springs (Barrel Type) in 3" ID and 18" length combine the anti-deflection barrel design with a long free length for maximum-travel suspension setups using 3" ID coilover dampers. These 3" ID Swift barrel coilover springs are manufactured in Japan from proprietary H5S.TW high-tensile alloy steel, eliminating spring bowing and ensuring consistent rates throughout the full stroke range.
For over 90 years, Swift Springs has led the industry in precision spring manufacturing. The barrel design is essential at longer spring lengths where deflection becomes more pronounced, preventing rate inconsistency and protecting the shock body from spring contact damage. Swift Springs coilover springs deliver increased traction, smoother weight transfer, and a more predictable driving experience for competitive racing applications.
Why Racers Choose Swift Springs Coilover Springs
- Proprietary H5S.TW alloy delivers superior fatigue resistance and consistent spring rates
- Barrel design eliminates spring deflection and bowing at long lengths
- Fewer coils reduce unsprung weight and maximize usable shock stroke
- Quicker transient response improves traction and road surface tracking
- Precision-ground flat ends ensure even seating on the perch
- Trusted by professional racing teams worldwide — Swift Springs coilover springs are proven in competitive motorsport
Note: Swift Coilover Springs are sold individually. Select your desired spring rate from the options above.
Specifications
| PART # | SPRING RATE | USABLE STROKE | MAX STROKE | MAX LOAD |
| lbs/inch | inch | inch | lbs | |
| 180-300-300 B | 300 | 9.9 | 11.3 | 3,402 |
| 180-300-350 B | 350 | 9.5 | 11.1 | 3,886 |