Fine-tune coilover rebound travel and inside-wheel support with a pair of Swift assist springs. Unlike low-rate helper springs, assist springs use a higher rate while remaining fully compressed at static ride height.
Sold as a pair. Spring rates are listed in kg/mm.
How assist springs work
- Designed to be fully compressed at static ride height
- Consistent block height allows rate changes without resetting the coilover perch
- Higher rates than helper springs can tune shock rebound travel
- Can help reduce inside-wheel lift and loss of traction during hard cornering
Available configurations
- 60 mm inner diameter: 2.25-inch length; 4.0, 5.0, or 6.0 kg/mm
- 65 mm inner diameter: 2.5-inch length; 4.0, 5.0, or 6.0 kg/mm
Selection and fitment
Assist-spring diameter, free length, rate, block height, main-spring length, damper stroke, and available travel must match the suspension. Review Swift’s assist and helper spring technical data before selecting a configuration.