Product Details
Swift Springs Standard Coilover Springs (Barrel Type) in 2.5" ID and 9" length combine the anti-deflection benefits of the barrel design with additional free length for applications requiring more usable stroke. These 2.5" ID Swift barrel coilover springs are manufactured in Japan from proprietary H5S.TW high-tensile alloy steel, eliminating spring bowing and rate inconsistency while delivering the traction and weight transfer characteristics that competitive racers depend on.
For over 90 years, Swift Springs has led the industry in precision spring manufacturing. The barrel design prevents spring-to-shock-body contact that damages adjusting perch threads, while H5S.TW alloy delivers superior fatigue resistance and rate consistency lap after lap. Swift Springs coilover springs provide increased traction, smoother weight transfer, lower tire temperatures, and a more predictable driving experience.
Why Racers Choose Swift Springs Coilover Springs
- Proprietary H5S.TW alloy delivers superior fatigue resistance and consistent spring rates
- Barrel design eliminates spring deflection, bowing, and shock body contact
- 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 | |
| 090-250-350 B | 350 | 5.1 | 5.9 | 2,081 |
| 090-250-400 B | 400 | 5 | 5.7 | 2,299 |
| 090-250-500 B | 500 | 4.4 | 5.7 | 2,854 |
| 090-250-525 B | 525 | 4.3 | 5.7 | 2,997 |
| 090-250-550 B | 550 | 4.3 | 5.6 | 3,096 |