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      07-07-2018, 12:25 AM   #4
matroxstock
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Drives: 2011 BMW 535i
Join Date: Jul 2018
Location: CA

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Hydraulic pump

If you are talking about the Dynamic drive, i.e., active sway bars, it does need a hydraulic pump, pulley and different drive belt.
Go ahead and put the H&R bars on it, you will like it! It made a world of difference on my 535.
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