So far, this is the most powerful F10 M5 we've ever seen on our dyno. Featuring a set of newly installed AMS catless downpipes mated to an Akrapovic Evolution exhaust system and a Switzer tune, this Sapphire Black beast put down a neck-snapping 633whp and 587wtq! Cosmetic modifications on this super-sedan include the IND painted cosmetic package, matte black painted OEM wheels and a set of Macht Schnell wheel spacers. Be sure to check out the video of the dyno run below to see and hear how fast this thing rips through 4th gear.

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