Shop by vehicle

BMW F32 F33 F36 Rear Diffusers

Finish the rear of your BMW F32 / F33 / F36 4 Series with a rear diffuser. This collection includes M Sport, M Sport V2 and M Sport Performance diffusers, including a quad exit version, plus a 428 430 Performance carbon fiber diffuser, mostly in carbon fiber.

Which F32 rear diffuser should you choose?

  • M Sport rear diffuser – a diffuser made for the M Sport rear bumper.
  • M Sport V2 diffuser – an alternative M Sport design with a different shape.
  • M Sport Performance diffuser – Performance styling, also available in a quad exit version.
  • 428 430 Performance diffuser – a carbon fiber Performance style diffuser for the 428 and 430.

Fitment

Most diffusers here are made for the M Sport rear bumper. Check each listing for the exact exhaust layout (single, dual or quad exit), bumper style and material. Not sure it fits your car? Send us your car's year, model and trim and we will confirm fitment before you order. Don't have the M Sport rear bumper? See our F32 F33 F36 bumpers. Pair your diffuser with an F32 front lip and trunk spoiler, or browse all BMW F32 F33 F36 4 Series parts.

FAQ

Are these diffusers carbon fiber? Most are. Check each listing for the material.

Do I need the M Sport rear bumper? Most of these diffusers are made for the M Sport rear bumper. Check the listing before ordering.

Single, dual or quad exhaust? Some diffusers come in different exit versions. Pick the one that matches your exhaust.