BMW G30 520d G01 G02 B47 Downpipe

Welcome to WeldAffection, brilliantly designed by taking the best assets of our original Downpipes and adding new design features. We have achieved the ultimate goal: performance.
WeldAffection G30 B47 Cat Bypass Pipes replace the restrictive factory cats with straight, zero-restriction pipes for significantly improved performance and sound.
These Cat Bypass Pipes will make your G30 sound very aggressive, while also giving you faster spool and an increase in power.

Industry-leading high-flow, premium quality Downpipes, designed and tested in Europe.
WeldAffection Downpipes are a direct fit with no modification required. Our decatted Downpipes are fitted with OEM flanges and fittings to allow an easy, trouble-free installation.

Downpipe Features:

• 100% bolt-on installation

• Made of grade 304 stainless steel, mandrel-bent pipes

• 304 stainless steel machined flanges

• Fully TIG/Argon welded

• Catless — ideal for race & track or ECU remapping

• Significant power gain

• Inlet diameter: 76mm

• Outlet diameter: 76mm

• Faster spool-up and better throttle response

• Adds a very nice tone to the exhaust
  
  

This Downpipe fits the following BMW models:

• BMW 520d (G30) from 2017

• BMW X3 20d (G01) from 2017

• BMW X4 20d (G02) from 2018