BMW Genuine Front Brake Disc Set 2 Series X1 X2 F45/F46/F48/F39. 1 & 2 SERIES Series X1 X2 F40 F44 F45 F46 U06 F48 F39 U11. Ventilated BMW Brake Discs. PAIR OF DISC LEFT AND RIGHT. Your chassis number can be found on your V5/registration document next to VIN/Chassis/Frame No. And it will start with WBA, WBS, WAP, WBY or WMW. It can also be found in the bottom corner of your windscreen on the passenger side (looking from the outside of the vehicle). Please Check out our other items in our shop. If you would like something changed with your order or would like your item sent 1. Class instead of 2. If your request is urgent, please call the parts department at Ocean Torbay. Please bring a form of ID if you are collecting. Our collection & return address is.