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Rogue Engineering


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Rogue Engineering X-Pipe for BMW M5 [E39] (E39M5-XP)


Quick Overview

This X-Pipe has been discontinued-Contact our Mod Experts to find out other options! 714-582-3330

Sku # : Rogue-Engineering-XPipe-E39M5-ER3
The Rogue Engineering E39 M5 X-pipe
Looking for maximum flow, and power gains out of your high output E39 M5 5.0L V-8?  These Rogue Engineering X-Pipes will take your E39 M5 to the next level in exhaust performance, and combined with their optional Rogue Engineering axle back system, you will have one of the most prestigious exhaust systems on the road.

The Rogue Engineering E39 M5 X-pipe replaces the stock BMW resonator, between the catalytic converter and the rear mufflers.  Rogue Engineering have incorporated two, 12" resonators in the X-pipe, to reduce cabin "drone".

Rogue Engineering E39 M5 X-pipe

Have questions or concerns about this E39 M5 Rogue Engineering X-Pipes? Call us 714-582-3330

E39 M5 X-pipe Features
The Rogue Engineering E39 M5 X-pipe is made to fit in the place of the factory resonator.  Other features include:

  • Weighs only 18 lbs. for the entire assembly, including built-in resonators.  Factory resonator, with tubing, is over 27 lbs.
  • 100% T-304 stainless steel construction and internals, a majority of the exhaust made from 16 gauge stainless steel.
  • Fully mandrel bent tubing, no crimps or flattened areas
  • Mil-finished.
  • Full TIG welded construction, no lock seams or pinch welds.
  • Factory-like hangers for OEM fit
  • Optimized tubing sizes and minimized bends maintain exhaust velocity without compromising necessary backpressure
  • Deep, throaty tone, without the drone. 
  • Can be used with other aftermarket mufflers
  • Will not change ground clearance
  • Will not void factory warranty
  • Will not affect emissions

Installation Notes

Medium Difficulty

  • Only simple tools needed
  • Jack stands and floor jacks or lift required
  • Professional installation recommended
  • No cutting or modification required


  • Fits E39 M5 ONLY

Rogue Engineering E39 M5 Diablo (with optional X-Pipe Installed)

All Stainless Steel is the same, right?  WRONG!
All Rogue Engineering Diablo exhaust are produced using only 100% full T-304 stainless steel because of its consistent strength characteristics, corrosion resistance, and wide range of materials (important for controlling sound and exhaust flow).  Recently, Rogue Engineering examined a well known exhaust brand only to discover the use of 20 gauge stainless steel (stainless is typically sold by weight) throughout the muffler body.  While great for reducing weight, this is not a good practice when trying to build a product to last.  This common practice of weight (and cost) savings occurs in European and US made exhausts.  Rogue Engineering does not prescribe to this practice in their production exhausts!  Rogue Engineering wants you to enjoy the exhausts for many years to come, even if it means sacrificing some weight savings (all Rogue Engineering exhausts are lighter than stock units).

Beware of some companies that pre-coat their exhaust products with "thermal coatings".  In fact, they may be hiding inferior stainless steel or inferior welding processes.  Rogue Engineering Diablo exhausts are always TIG welded and never coated.

Some companies have chosen to build their "stainless steel" exhausts with Grade 409 stainless, because it is less expensive than 304.  While Grade 409 will resist atmospheric and exhaust gas corrosion, a light surface rust will form is most all atmospheres. 

Have questions or concerns about this E39 M5 Rogue Engineering X-Pipes? Call us 714-582-3330

Rogue Engineering E39 M5 Diablo (with optional X-Pipe Installed)

Rogue Engineering E39 M5 X-pipe shown installed with optional E39 M5 Diablo Mufflers

Have questions or concerns about this E39 M5 Rogue Engineering X-Pipes? Call us 714-582-3330

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