BMW 135i N55 Decat Downpipe 4" M135i 2012 - Pre June 2013 | MTC Motorsport
BMW 135i N55 Decat Downpipe 4" M135i 2012 - Pre June 2013 | MTC Motorsport
BMW 135i N55 Decat Downpipe 4" M135i 2012 - Pre June 2013 | MTC Motorsport
BMW 135i N55 Decat Downpipe 4" M135i 2012 - Pre June 2013 | MTC Motorsport
BMW 135i N55 Decat Downpipe 4" M135i 2012 - Pre June 2013 | MTC Motorsport
BMW 135i N55 Decat Downpipe 4" M135i 2012 - Pre June 2013 | MTC Motorsport
BMW 135i N55 Decat Downpipe 4" M135i 2012 - Pre June 2013 | MTC Motorsport

BMW 135i N55 Decat Downpipe 4" M135i 2012 - Pre June 2013 | MTC Motorsport

Regular price £189.00
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5 in stock

MTC Motorsport BMW M135i M235i 335i 435i Decat Downpipe

This downpipe will fit all N55 engines that were manufactures before July 2013 which is pre-EWG. This will not fit the M135i from July 2013 and onwards. Please ask if you are unsure.

  • The BMW 135i downpipe is machined from T304 high-grade stainless steel and are tig welded in house
  • The decat is fabricated in the UK and the flanges are laser cut between 10-12mm
  • Sharper throttle response due to faster spool of the turbo
  • Noticeable power gains and a much more aggressive exhaust note which sounds truly amazing
  • It produces lower temperatures and less exhaust backpressure due to the relief of the turbocharger. Also, the cylinder charge is increased
  • There is also a substantial weight saving in comparison to the factory catalytic converter
  • Mandrel-bent for better gas flow and maximum internal size to ensure ultimate performance without the loss of mid-range torque.

This decat will fit the following models:

  • BMW M135i pre July 2013 

We have tested this product and found increases of 10-15bhp. 

Professional installation is recommended as some exhausts sit slightly different from others and can be tight although the feedback we have received from this product is that it is very easy to fit.

We also recommend purchasing a Lambda Sensor Spacer(s) to prevent the engine light coming on in most cases. If you search our other items you will find these. 

This product comes with lifetime warranty.

If your car is a 63 plate or newer this will not fit and you will need to see our other items for the newer one.

Why choose us?

Engineered for Performance

All of our uprated intercoolers, downpipes, hoses and other performance parts have been designed and engineered in-house here in the UK.

Consistant Quality

Here at MTC Motorsport, we are dedicated to providing quality made products at a competitive price. Each product we create is tested on a vehicle before going on sale to the public so you can be sure you are getting a 100% tested and working product.