Left side front with a 6061 black anodized billet aluminum carrier. Bolt-on installation with stock front ''open center'' cast wheel. Oversized brake rotors from 420 stainless steel for a big increase in performance styling. Comes with a billet aluminum brake caliper bracket and all necessary hardware to make a smooth transition from stock to a true Arlen Ness set-up that will turn heads. Stock calipers and brake lines can be re-used. Note: Comes complete with brake caliper adapter bracket to compensate for rotor diameter. Note: See 599513 for right side rotor.