Wisefab BMW e9x lock kit can be fitted on a variety of BMW models. E90, E91, E92, E81, E82, E87, E88 M and nonM. Brackets included to fit M brake caliper. Either M or nonM front coilovers would work with Wisefab E90 knuckle. All the metal components on Wisefab E90 front suspension are from high strenght steel, including sheetmetal components, tubes, tube ends and rod end housings. Rod ends and spherical bearings are used, no rubber bushings.