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Dinan Free Flow Axle-Back Exhaust - 2017-2021 BMW M240i, photo 1 of 8
Dinan

Dinan Free Flow Axle-Back Exhaust - 2017-2021 BMW M240i

$1,649.95 Available

Ships from the brand or distributor, usually in 3–7 business days

Make sure this fits your car

Fits: BMW M240i (F22). Confirm your exact car with us before ordering.

Tips: Select one
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  • Shipping at real carrier rates
  • 30-day returns on unused parts
  • Fitment help before you buy
Questions about fitment?Email a B58 tech with your VIN, and we'll confirm before you order.

Dinan's axle-back for the F22 M240i lowers back pressure for better flow and gives the car a richer exhaust note. It stays civil when you're cruising, opens up under hard throttle, and adds pops and burbles. A Helmholtz chamber cuts low-rpm drone on the highway.

What you get

  • Free-flow design that reduces back pressure.
  • Helmholtz chamber tuned to cancel drone at low rpm.
  • 16-gauge 304 stainless steel throughout, for long-term corrosion resistance.
  • Hangs on the factory mounts for a correct fit.

Choose your tips

  • Polished or Black tip finish.

Brand: Dinan · Part #: D660-0067, D660-0067-BLK

Guides for this part

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Start with a tune. It is the biggest gain per dollar on any B58. Then add a downpipe and a Stage 2 map, then an upgraded high-pressure fuel pump (HPFP) and an ethanol blend. Only after that should you think about a bigge

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