If you have a lifted ’99-’06 GM 4x4, you’ve had to futz with torsion bars. In a stock application, the torsion bars work OK, but they add a lot of complexity and weight to your suspension system. When you add a lift kit, the required drop brackets generally hang down far below the frame, significantly decreasing ground clearance. JD Fabrication in Escondido, California, went to work on the GM IFS to come up with an affordable mid-travel steering and suspension solution. The company developed a simple weld-on coilover kit that replaces the clunky torsion bars and related crossmember bracketry. JD Fabrication specializes in go-fast long-travel suspensions for 2x4s and 4x4s. The company already offers a complete high-end long-travel IFS kit for the ’99-’06 GM 4x4 that provides up to 15 inches of wheeltravel. The new coilover kit increases wheeltravel to 11 inches. The kit also provides the performance and easy ride-height adjustability of a 2 1/2-inch-diameter King coilover shock with a remote reservoir. Here’s how it all comes together.
The JD Fabrication kit includes 2 1⁄2-inch-diameter, 10-inch-travel King coilover shocks, 700–in-lb coils, and custom shock ends that fit the factory GM lower A-arm. The truck height can be adjusted via the coil adjusting hardware.