• The product is a blackened BB version Kit OEM for Rolls-Royce Cullinan upgrades. This kit includes 8 units of the following interchange part numbers: 51137059876, 51137354289, 51137444640, 51137410878, and 51138493852. It comes with a manufacturer warranty of 6 months and is an original equipment manufacturer (OEM) part with the manufacturer part numbers listed. This upgrade kit is specific to the Rolls-Royce Cullinan brand and is designed to enhance the exterior of the vehicle.