Editor's note: An earlier version of this story incorrectly said Ram pioneered coil spring rear suspension on full-size pickups. Chevrolet C10 pickups carried the technology in the 1960s. Ford's ...

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.

Rassini has developed and manufactures the hybrid rear suspension, which consists of a parabolic main steel leaf supported by a composite helper, at its Piedras Negras (Coahuila Mexico) location. With ...

We've often touted the benefits of leaf spring suspensions. Sure, they are simple. Sure, its technology that could be almost 300 years old, and sure, leaf springs aren't terribly fancy. But hey, they ...