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  • The ultimate catless downpipe offering maximum power and sound; recommended for track and off-road use
  • Fabspeed 335i/435i Catbypass Downpipe replaces the two restrictive factory catalytic converters with a free-flowing straight pipe section for maximum exhaust flow and power.
  • Each Catbypass Downpipe is constructed out of T304L stainless steel for industry leading durability.
  • Each Catbypass Downpipe is made in house at our Fort Washington, PA facility.

BMW 335i & 435i (F30/F32) Catbypass Downpipe

$595.00

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Product Details:

The ultimate catless downpipe offering maximum power and sound; recommended for track and off-road use                                      

FEATURES:

  • Fits all BMW F30/F32 335i & 435i vehicles. We created two different flange styles to ensure proper fitment across all years
  • Replaces the two restrictive factory catalytic converters with a free-flowing straight pipe section for maximum exhaust flow
  • Greatly increased throttle response and noticeable power gains
  • A more aggressive note to the exhaust tone
  • Direct bolt-on replacement; no cutting or welding required
  • Recommended for track and off-road use only (NOTE: It is the purchaser's responsibility to verify legality and compliance in their region.)

A check engine light is possible due to the deletion of factory catalytic converters. We highly recommend a tune or tuning device. Please contact us for all tuning information.

IMPORTANT NOTE: There are two flange types for the 335i and 435i, depending on the wastegate style of the turbo. Pre 08/2013, a smaller flange is utilized. The build date of your car can be found on a sticker on the driver's side door jam. If you need assistance determining which version you have, please contact us before ordering.

Product Reviews

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  1. Catbypass 5 Star Review

    Posted by on 14th Jul 2017

    I was debating on what downpipe to buy and I was recommended to go with fabspeed. I'm honestly blown away by this product the amount of sound and power you feel and gain are crazy. It is very worth every penny.