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velocity stacks

  1. Short Velocity Stacks on S/C results!

    E39 M5 and E52 Z8 Discussion
    I made a few sets of my ShafroShortStacks back in December that didn't seem to gain much interest outside of the FB group. So I had a chance this weekend to put them on a dyno for some testing. Below is the story and results. "We got to test my short velocity stacks on the dyno yesterday and...
  2. E39 (96-03) For Sale Short Velocity Stacks

    Parts / Other For Sale or Wanted
    One piece CNC machined out of 6061 billet aluminum. I currently have 2 sets (8pc/set) ready to ship. These are designed and intended for FI use to make higher peak horsepower. 10% discount for the holidays = $575 shipped in the US