Leaf springs are one of the oldest forms of suspension. For hundreds of years, leaf springs have been used on automobiles, carriages, trailers, and so much more—and they’re still in use today. On the ...

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, ...

Just as you wouldn’t overload a packhorse, it’s just not right to overload your workhorse van. Sure, a Ram ProMaster van is designed to carry heavy cargo (rated for 4,440 pounds, max), but nobody ...

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.

BrightDrop electric delivery vans (above) as well as Chevrolet Silverado/GMC Sierra pickups from General Motors Co. feature North America’s first composite tension leaf springs (TLS) with progressive ...