Swift Springs Coilover Assist Springs in 65mm (2.56″”) ID provide a dynamic step-linear rate that fine-tunes rebound travel and prevents inside wheel lift during hard cornering. Unlike helper springs that have minimal rate contribution, Swift assist springs use a heavier rate to actively manage suspension behavior during droop. Every Swift assist spring compresses to the same height regardless of rate, allowing drivers to swap between rates without resetting the coilover perch or changing ride height. This makes assist springs a powerful tuning tool for dialing in corner-entry behavior, reducing inside wheel lift, and optimizing weight transfer in competitive applications.
Swift Assist Spring Advantages
Note: Sold as a set of 2 Swift Assist Springs.
| Part # | Spring Rate | Free Length | Stroke | FCH | CW | |
| kgf/mm | lbs/inch | inch | inch | inch | lbs | |
| A65-068-040 | 4.0 | 223 | 2.7 | 1.6 | 1.1 | 342 |
| A65-068-050 | 5.0 | 279 | 2.7 | 1.6 | 1.1 | 441 |
| A65-068-060 | 6.0 | 336 | 2.7 | 1.6 | 1.1 | 573 |
| Notes | – |


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