The new BMW F90 M5 is a beast and a plethora of tests have shown that already. It’s a proper land rocket that shouldn’t be able to cover ground so fast considering how big it is. The problem is, sometimes the sound of M cars – M5 included – might not reflect their might. That said, the F90 M5 could use a bit of a meaner growl, something the people over at Remus aimed to deliver.

Remus has been doing exhausts for quite some time now and they cover a wide variety of models, not just AMGs or M cars. Today though, we’re talking about their offering for the M5. As you can hear in the video below, their take on the note of the 4.4-liter V8 under the hood of the new M5 delivers a deeper sound, especially on overrun.

The car in the footage below has the entire axle-back system installed. This means we’re looking at a Remus setup using 84 mm piping and 102 mm custom tailpipes made of titanium, with carbon fiber trims. According to the tuner, the valves in the rear mufflers are activated using the on-board buttons and you need no special modifications for them. The exhaust is made of stainless steel and has a non-resonated Cat-Back front section.

The trick is, all of this is not exactly road legal so you’re taking on a bit of a risk if you decided to go for one. Then again, most aftermarket exhaust systems aren’t exactly CARB compliant. The risk might be worth it though as the distinguished gentleman racer could use a bit more oomph in its voice. Pricing starts at $3,430 and goes up to $4,248 depending on what combination you go for.