This bolt-in SLA (Short-Long-Arm) suspension system replaces the McPherson strut design with a billet aluminum upper control arm, tubular lower arm and spindles with S-550 Mustang hub's. This design greatly improves negative camber gain and overall suspension geometry. Available with either Ridetech Coil-Overs or Shockwave air suspension. (Sold separately)The factory strut design offers very little camber gain and poor overall geometry. This design incorporates an upper control arm to induce negative camber gain. This positions the tire perpendicular to the pavement through the corners without the need for excessive static camber. Caster, roll center and Ackerman angles were also optimized.The bolt-in frame surrounds create attachment points for the upper control arms and the shocks, this keeps all of the load on the frame rails. The upper and lower arms feature Delrin bushings to minimize stiction. The spindles utilize S550 Mustang hubs to prevent flex and are compatible with S550 or SN-95 Mustang brakes. (Sold separately)Camber gain is 1.25 deg./inch. Positive caster setting from 7-9 degree's. Bumpsteer is nearly eliminated, under .050". Tire clearance improved on lower arm to allow 30 degree’s of steering angle with up to a 275mm wide tire (minimum 17"). This system is compatible with the stock sway bar or most aftermarket sway bars. This system will fit most aftermarket k-members including Maximum Motorsports, Team Z, AJE and UPR.