Picked up my X1 specific KW V1 coilovers today and compared the part numbers with those of my wife's 335i xDrive setup. Front/Rear dampers and rear springs are all the same as the E90/E92 xDrive units. X1 specific items are sleeves fitted to the front dampers to suit the X1 front knuckle, and different front springs (10mm longer and slightly heavier gauge coil).
With this info at hand, and bearing in mind the relative lack of availability for the X1 specific units (KW NA will just say no, you can't have them), I'd say the E90/E92 xDrive items are a safe and workable alternative.
|