Yes, the X ///M models are built in the same factory with all the other Xs, however, the engine is coming from Germany as normal.

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'98 Type R drag car ~1400hp
'01 X5 3.0 silver (sold)
'02 X5 4.6is silver (sold)
'04 X5 4.8is black (sold)
'10 X5 ///M Alpine White