Suspensions have come a long way since the introduction of the first buckboard stiff, leaf- sprung flatfender Jeep over 70 years ago. Custom four-link Jeep suspensions have become increasingly popular among skilled fabricators, and for good reason. They provide an incredible amount of torque and axle control, articulation, and wheel travel. Unfortunately, a four-link requires a lot of forethought and knowledge of suspension geometry. Building a four-link that works properly isn’t exactly inexpensive or easy.