Keep a coilover main spring seated against its perch at full droop with a pair of Swift helper springs. Their low spring rates are designed to have minimal effect on the main spring once the suspension is carrying vehicle weight.
Sold as a pair. Spring rates are listed in kg/mm.
When helper springs are used
- Maintain spring contact with the upper and lower perches at zero or negative load
- Support setups that cannot use enough main-spring preload because of ride-height limitations
- Prevent a loose main spring during droop travel
Configuration
Select the inner diameter, free length, and rate using the live options above. Options include nominal 60, 65, and 70 mm inner diameters with the displayed 2.25- or 2.5-inch lengths and rates.
Important: Some current option labels and SKU prefixes do not map consistently. Confirm the required diameter, free length, rate, and SKU with ZEVcentric before fulfillment.
Fitment and technical data
Helper-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 ordering.