Today a lot of street-legal vehicles and off-road rigs run modern coil spring suspensions. Coil springs in their various formats have a number of advantages over traditional leaf springs and torsion ...

"Coil bind" occurs when a spring's coils stack solid at or before full camshaft lift. This develops an infinite load on the valvetrain, causing its weakest link to fail. If you're lucky, the result is ...

Jeep TJ and JK Wranglers aren't the only rigs out in the backcountry, but they do represent a big, fat chunk of the rigs you'll find there. We decided to assemble a collection of suspension systems ...

For mild street engines, stock valve springs are more than adequate. But if you've screwed in a big bumpstick for strip-banging or banzai runnin', then pay attention. Our plan was simple: Install a ...

The race (or should we call it war?) to make the loudest, fastest, most capable off-road pickup truck has really come to a head in the past 12 months. Though Ford went largely unchallenged with its ...

The leaf spring suspension has practically been around since humanity invented the wheel due to its effectiveness and simplicity. For a variety of reasons, the tried-and-true suspension still exists ...