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Megan Racing Exhaust Downpipe with High Flow Cat For 19+ Toyota GR Supra

Our downpipe for the BMW B58 engines completely replace factory component replacing the factory catalytic converter with a high flow, 200 cell catalyst improving overall flow, turbo response and exhaust noise. Perfect for racing discipline classes which require a catalytic converter. Off-road competition use only. Check engine light may occur without an ecu tune and/or o2 spacer.

Our downpipes are constructed with 100% T-304 stainless steel and are designed to be completely bolt-on components requiring no added modification. All products are protected with a 1-year warranty against manufacturer defects. Off-road use only.

  • Material: T304 Stainless Steel
  • Color: Metallic. Surface Finish: Polish
  • Downpipe Spec: Complete bolt-on unit with 200 Cell High-Flow Catalytic Converter
  • Inlet/Outlet: 110mm ID /80mm ID. 2 x O2 Sensor Bung
  • Increase High Flow Air and Maximize Performance
  • TIG Weld for Strength and Durability
  • CNC Machine Flanges for Strong Solid Support


  • For 2017-UP BMW M240i
  • For 2016-2018 BMW 340i
  • For 2020-UP BMW M340i
  • For 2019-UP Toyota GR Supra
  • For 2018-UP BMW X5 3.0L Turbo (B58)

Remark: The catalytic converter does not comply with any Federal or California emissions regulations. These are not intended for street use


All Megan Racing Exhaust and Suspension products are deemed for "off-road use only"-- please check local laws regarding the modification of the exhaust systems by checking the vehicle code for your state. Many states are more stringent on exhaust modification laws and to pass SMOG. Please check your local laws.

All Megan Racing exhaust system components will alter and affect the vehicle's overall sound in pitch and volume. All to which is subjective in manner. Megan Racing will not claim responsibility and/or accept returns based on an individual's personal preference

Product Content:

  • 1 x Exhaust Downpipe

No Instruction, Professional Install Recommended

Cross Reference Number:

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