~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 ~ Caster is adjustable by stacking the included 5mm spacers to shift the arm forward or backwards in the subframe ~ 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 our subframe reinforcement plates (sold separately). The FD subframe is known to be weak which is easily damaged by our much longer solid mounted arms. 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 a 28mm Nissan S14 swaybar for more steering angle clearance