Why a 4-link system It's simple, through full wheel travel there is less than 1 degree of caster change (front axle rotation), this means control in the steering wheel over rough terrain. The stability in the steering wheel is noticable even under normal driving conditions.
In addition to 4 beefy control arms, this kit comes with new 4-link frame mounting brackets. These aren't a drop down bracket, they actually replace the stock mounting system. -Don't worry, no welding required. The kit also comes with a new steering stabilizer, anti-sway bar drop brackets, a dropped pitman arm for steering angle correction, a track bar relocation bracket to properly center your axle and bump stop extension.
The rear is lifted via a 3" block and U-bolt kit or choose to upgrade to BDS full replacement leaf springs.
Choose between gas and diesel configurations, as well as plenty of upgrades and acessories when customizing your kit.Check out the BDS 4-link system in the follwing magazine articles: