BMW e60 e63 Brake Disc Rear GENUINE (x2 rotors) 535 545 550 645 650 e64 Brake Disc Rear 345 X 24 mm (set of 2) BMW part# 34 21 6 763 827, check fit below. Genuine BMW part, recently made: not been lying around. Please see FITMENT CHART below, under PRODUCT DESCRIPTION. Email us your VIN for any questions.