Rogue Engineering Diablo Exhaust for the BMW M5 (e39) - New Version

Few sounds can make summon goose bumps quite like the S62 V8 found in the E39 M5 with a well designed exhaust system. We proudly introduce the Rogue Engineering E39 M5 Diablo.

Videos of the Rogue Diablo Exhaust with the optional Rogue X-Pipe:

Geez, What took you so long?:
Although production stopped in 2003, Rogue realized that even today, the E39 M5 represented a large, enthusiastic group. Most other companies may have written off older BMW models such as this, but Rogue continues to embrace (and own) these vehicles. Therefore, it made sense to apply their knowledge and experience into a product that they could call their own.

A cursory glance at the exhaust easily shows how this exhaust excels in both performance while saving weight. However, a closer look will show the pure artistry of its construction and elements of unique design.

The heavy factory resonator's (21 lbs. by itself) primary job is to muffle sound and eliminate exhaust "drone." It does such a great job, that much of the exhaust sound is eliminated by the resonator itself. The factory mufflers do a fantastic job of completely muffling sound in the E39 M5; so well that the only way one can really hear the vehicle is to completely roll down all of the windows. Between them, the factory resonator and the two rear mufflers weigh a staggering 98 lbs.

In a desperate attempt to get sound, some have tried extreme things such as a complete cutting off of the rear mufflers and running straight pipes. While easy to do and inexpensive at the local muffler shop, people quickly discover that the raw, brute sound of the V8 is intoxicating, just like a muscle-car. The grins produced by this kind of exhaust modification quickly turn to frowns when you try to listen to music, try to answer a business call in the car, or simply when trying to speak to someone in the vehicle.

Some may try a more elegant method of DIY modification and purchase aftermarket muffler/tip combos and have the same local exhaust shop install them in place of the factory mufflers. While a better alternative to straight pipes, most shops will typically MIG weld, without stainless steel. After a few months, a few hundred dollars spend on generic mufflers and mild steel MIG welding do not quite look like they belong on a vehicle that used to have a sticker price of $72,000.

One sound does not fit all:
The Rogue Engineering E39 M5 Diablo exhaust is more than just a great sounding exhaust. By studying the factory exhaust system, it just made sense to develop the exhaust the way Rogue did.

After studying the benefits of a muffler-only replacement, Rogue worked on the sound. They wanted a deep, rich sound, without too much volume. Like all of Rogue's exhaust products, sound is controlled with internal muffler tuning done the old fashioned way, tweaking the dimensions of the muffler, as well as the internal perforated tubing (perforation size, spacing, and tubing length). The result is a rich, deep tone, that does NOT intrude into the cabin.

For those looking for slightly more sound, also without drone, we also sell the Rogue Engineering E39 M5 X-pipe, which can be used together with the Rogue E39 M5 Diablo exhaust. The resonated x-pipe removes the restrictive factory resonator, without introducing ear-numbing drone.

E39 M5 Diablo Features:
The RE E39 M5 Diablo exhaust is made to fit exactly like factory. Features include:

• Weighs only 21 lbs. per side. When used with the optional RE E39 M5 X-Pipe (sold seperately), total weight is only 60 lbs. (stock is 98 lbs.), saving 38 lbs. over stock.
• 100% T-304 stainless steel construction and internals, a majority of the exhausts are made from 16 gauge stainless steel.
• Exclusive, oversized 3" OD inlet tubing for maximum exhaust flow (stock and most other aftermarket companies have 2.5" OD tubing).
• Fully mandrel bent tubing, no crimps or flattened areas.
• Mil-finished pipes and muffler, mirror polished stainless steel quad 80mm straight cut, staggered tips (3mm thick wall). Completely fills in factory valence without modifications.
• Full TIG welded construction, no lock seams or pinch welds.
• Factory-like hangers for OEM fit.
• Rogue Engineering logo tastefully stamped on the body of the muffler.
• Flow-through design does not create muffler "hot spots" found on chambered mufflers.
• Optimized tubing sizes and minimized bends maintain exhaust velocity without compromising necessary backpressure.
• Deep, throaty tone, without the drone.
• Will not change ground clearance.
• Will not void factory warranty.
• Will not affect emissions.

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 almost all atmospheric conditions.