~Adjustable front lower control arms for FD3S Mazda RX7 1992+ ~ Compatible with OEM knuckles or MAX Super Angle Knuckles. ~ Tig welded DOM Japanese steel ~ Track width adjustable from 25-75mm longer than stock on each side ~ S shaped caster arm for maximum tire clearance at high steering angle ~ Adjustble caster with stackable bearing spacers ~ PTFE low torque, high misalignment spherical bearing mounts with Chromoly outer ball joint taper ~ Adjustable swaybar endlinks ~ Adjustable coilover mount position to change leverage. ` ** INSTALL NOTES: Requires use of spherical bearing lower coilover mounts. If you are using bushing style mounts, you must chop the bushings to 40mm overall width to connect to these arms. Wider track width will require longer tie rods, sold separately. Not compatible with stock swaybar. We sell a bracket kit separately to custom mount an S14 swaybar for more steering angle clearance