The BBI Autosport front and rear lower control arm kit for your 996 or 997 offer increased adjustability over the stock pieces and have increased durability. The BBI control arms are manufactured out of billet aluminium and utilize a sealed monoball inner bearing. These are a must-have for track enthusiasts looking to dial in their wheel alignment. This kit includes all 2 control arms (compatible with front & back) as well as the adjustable thrust arm bushings. Please double your order for al 4.