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Mini Cooper Downpipe 3 Inch Jmt Gen3 F55 F56 F54 F57

Mini Cooper Downpipe 3 Inch Jmt Gen3 F55 F56 F54 F57

Mini Cooper Downpipe 3 Inch Jmt Gen3 F55 F56 F54 F57

This 3" Downpipe is a direct bolt-on down-pipe that was designed to fit the 3rd generation US Mini Cooper and Cooper S models 2014 to current and mate with the OEM 2.75" flange.  This item is a replacement for the primary down pipe only. Available with our without the catalytic converter.  OFF ROAD OR TRACK USE ONLY - NOT LEGAL FOR STREET USE IN THE USA.

Image shown is the de-catted version.

Fits the following Cooper S models:

2014-2020 F56 MINI Cooper S Hardtop
2015-2020 F55 MINI Cooper S Hardtop 4-Door
2016-2021 F57 MINI Cooper S Convertible
2016-2020 F54 MINI Cooper S Clubman

This part replaces the factory catalytic converter and may not be legal in your state. It also may cause a check engine light, and CAN NOT be returned if it causes a check engine light.

You may ask 'what's the point if the 3.0 inch downpipe tapers down to 2.75 inches'? Here are a couple reasons why the 3" downpipe improves performance:

  • The larger downpipe provide a greater area for the exhaust gases to expand - ie a greater pressure differential. The Turbo focuses the exhaust energy into the turbine to carry as much energy as possible. As the exhaust exits the turbo and expands, the energy dissipates so the goal is to have the largest area possible for the gas to expand - or a larger downpipe.
  • For the Downpipe with Catalytic Converter - the inlet and outlet for the cat on the stock unit is 2.75", the inlet and outlet on this unit is 3". The oversized inlet and outlet greatly improves flow with significant reduction in back pressure.

On any turbo, less backpressure equates to IMPROVED PERFORMANCE, less backpressure equates to MORE HORSEPOWER. The larger the turbo, the more critical this becomes. It may not sound like much, but when you run a larger turbo - it makes a BIG difference! For maximum performance, run the De-Cat Downpipe (or Cat-less dowmpipe).

Available with our without the catalytic converter.



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