FS Performance Engineering Rear Diffuser - BMW E9X 335i



Part# FSPEBW002S-O

In Stock
This product is currently IN Stock.
Ships 4+ Weeks
This product usually ships within 4+ weeks.

Does This Fit Your Car?

Now THIS is what you call outrageous AND functional.

Why this diffuser is CALLING YOUR NAME:

  • You can probably plow a field and create down force at the same time
  • CNC Laser Precision Cut to puuuuurfection
  • Mounts using supplied brackets and hardware - NO DRILLING REQUIRED
  • Designed and crafted in California, which is in the FREAKING USA WOOH!
  • Powder coated black of choice from shiny to not... you do you boo
  • ALL mounting hardware is supplied so you don't need to buy anything additional
  • YOU ALSO GET FREE SHIPPING to the lower 48 US states. HOW COOL IS THAT? Please contact us for international/Alaska/Hawaii shipping. We are more than happy to help!
  • PLEASE allow a 3-4 week build time. Contact us if you want to check if we have the diffuser in stock and we will do our best to get it to you quickly.
  • NOTE: Designed around a 335i WITHOUT rear mufflers. However, it will likely fit a 335i with rear mufflers. Feel free to contact us if you have any concerns.
  • You get the option to choose between the center portion of the diffuser, the outer pieces, or both!


FSPE takes pride in the products we produce. They want you to smile as much as they do after seeing an installation. When you get up and personal with their aero you'll see what has been put into it to make it stand above the rest. Please enjoy what they have to offer!

⚠️CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

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