Helper springs are engineered to enhance and support the OEM suspension. They are most commonly available in two variants: steel springs and pneumatic springs. Helper springs serve several functions, ...

Rassini’s 1+C Hybrid leaf spring features a single steel parabolic main plate and a flat glass fiber composite helper plate to provide suspension on the rear wheels of the Ford F-150 pickup truck.

It is said that the leaf-spring suspension is the oldest suspension used for automobiles. The leaf-spring system was used more recently in '70s production cars, some of which are still in service ...