that's a good question, but we wont really know until the items are released in the U.S. and added into ETK. I can only assume that the cooling upgrades will be sold individually due to there proximity to the front of the vehicle and the need for replacement in the case of a front end collision. However, the BMW performance exhaust for the 335i sedan includes a separate x-pipe which can not be purchase separately.
13' Msport 328i _Mperformance - Modulare - H&R_
Previous: 09' Msport 335i, 07' Msport 335i