4-link suspension for full-size Chevy/GMC truck.  Designed and tested in-house, our engineered kit replaces the factory leaf spring suspension. The JSM 4-link kit is properly set-up to reduce the effects of body roll and can be adjusted to improve traction, ride quality and braking.  This kit is a mostly bolt on kit, with welding only required on the brackets for the axle. Multiple holes exist in order to adjust the instant center for optimum traction.  Be sure to read our tech topics if you need more information.  The panhard bar is adjustable also allowing for different roll centers. Options include our 4-link kit with or without shocks & springs. We pair our 4-link with Viking Warrior double adjustable shocks and springs for ultimate performance.  Upgrades to the shocks are available with custom valves, remote reservoir, etc.

*Contact us for special pricing for shock upgrades, including magnetic ride capability.