Can someone please tell me when purchasing the JCW Aero bumper, does it come with the bumper plastic arches included in the price? is there a seperate part number for this? thanks

 

The whole bumper+arches is one peice and not individual elements, so no there are not any additional part#s. There are some peices needed for mount however, so be sure to get those. FYI for the r53 there was only an Aero, not JCW AERO (difference in later cars).