Guest Blog: Andrew Krok>> The Rbm & Fmu Clk63 Amg Black Series

To me the
Mercedes Black Series is one of the most hardcore vehicles on the road. They excel in performance and handling. To top
it all off, they also look amazing on the road and on the track. But there are
always people who try and improve on something that is already ‘perfect'. After
seeing the progress photos I have no doubt that Fluid MotorUnion and Reaction
Brand Marketing have made something good. even better.

I'll let
Andrew Krok from Fluid MotorUnion take you through the process of rebuilding such an iconic car.

Reaction Brand Marketing has one main goal
– to build some serious project cars. Fluid MotorUnion happens to share the exact same goal. Between the two companies, there have been
several appearances on Speedhunters and plenty of experience in the aftermarket
scene. It only makes sense that the first
collaboration between these two companies ends up in the hallowed halls of
Speedhunters as well.

From the second this car was purchased,
there was never a thought in RBM co-founder Joe Galante's mind to keep it stock. Even in its fresh-from-the-factory form, the
car is still a beast; however, given that its intended destination was SEMA
, RBM knew that they needed some of the best and brightest minds to give
this car the advantage over other SEMA builds.

The first modification was a no-brainer;
the car needed new wheels, stat. This
10-spoke design from ADV.1 wheels helps to fill out the wheel wells and give
the car an even more menacing appearance.

From the wheels, RBM went straight to the
paint. After blending together enough
BASF paints to fill a large notebook, RBM's "J.G. Matador Grey" strikes
everybody differently. Love it or hate
it, this paint is by far one of the more polarizing additions to the Black Series.

to arriving at Fluid MotorUnion, the RBM Black Series headed to RS Designs in
Seattle (also home to RBM), where Ryan Shaeffer fabricated a roll cage…

…and custom-stitched both a full Alcantara
interior and some custom Recaro SPG seats. Preferring not to get any of it dirty, they took it all back off and
shipped the car to FMU with the stock seats, no interior fabric and no roll

After arriving at FMU's headquarters in Plainfield,
Illinois, work began. After extensive
discussions over e-mail and a trip out to Seattle, FMU had one goal and only
one goal for this build – produce something over-the-top. So they went off to do that. Having gained popularity for their exhaust
and velocity stack systems, FMU decided to whip up a full custom exhaust for
this car, including the headers.

Aerodynamic improvements were a must, so
RBM supplied FMU with a full carbon Varis GT Euro wing. Even though it's supposed to go on a E9x BMW
3-series, it fit perfectly on the Black Series' trunk with no issue
whatsoever. This is probably the second
most polarizing piece on the car, but don't worry! The Black Series will be competing in the
Global Time Attack series, so it has a completely legitimate purpose.

To give the Varis wing some extra reason to
exist, FMU installed Weistec's recently released Stage 1+ Supercharger kit,
which Weistec claims is good for 672 bhp. MB owners the world over are praising this kit, and after installing it,
it's definitely lived up to everybody's lofty expectations. Nothing beats an aggressive supercharger
whine as you're passing 150 mph (on closed roads, natch).

The first piece to be completed was the
custom header setup. Crafted entirely
in-house at FMU, these long-tube, bullet-merge headers feature a cross-bank
setup, with one runner from each header crossing over to the other side's merge
collector. After all, long-tube headers
are a nice addition to any car, but this is SEMA, and the game needed to be
stepped up from every angle.

After the headers were completed, FMU
completed the rest of the exhaust. 
Featuring straight-through Vibrant resonators (two per side of the
exhaust) and switch-operated electric cutouts that bypass the second set of
resonators, this cat-deleted exhaust is the reason why so many videos that
feature this car involve massive fireballs and very angry exhaust tones.

Even after the full exhaust setup was completed, FMU had one more trick up their sleeve. They've incorporated Formula 1's exhaust-blown diffuser (EBD) into the tips of the exhaust system.  SEMA prides itself on the originality of the builds it features, so RBM and FMU knew that something original needed to be included in the build, hence the EBD.  It's proved effective in their flow testing models and will undergo wind tunnel testing next season to confirm the real-world results against their computer-based modeling.

Currently, there are two different setups for this car. The track setup includes the Varis GT wing and BBS lightweight race wheels with Pirelli DOT-R compound tires, whereas the street setup will feature a Vorsteiner trunk lip spoiler in place of the GT wing (thanks to a second trunk that they'll swap in and out) and the ADV.10 wheels shown earlier. That should help to keep the Fast & Furious wing jokes to a minimum on the streets of Washington state.

While the car will be featured heavily on
the track next season, for now its taken up a temporary home at Fletcher-Jones
Imports in Las Vegas, in their AMG Performance showroom. There's plenty in store for next season, as
well – a built-in jack system, MOTON suspension, another set of ADV.1 wheels
and even more, so expect to see this car popping up all over the place once the
snow starts melting!

There were so many hands in this project,
that it's probably best to hand the thank-yous over to Joe Galante, co-founder
of RBM:  "I don't even know where to
start. Obviously Fluid MotorUnion played
a huge part in this, along with Ryan Shaeffer (RS Designs), my partner-in-crime
and "logistical wizard" Mitchell Greenblatt, ADV.1 Wheels, Alpinestars, AST
Suspension, BASF, Contour HD, eGarage, JMI Motoring, Meguiar's, Mercedes-Benz
USA, Mobil 1 Racing, MOTON USA, Pirelli, Recaro, Speedhunters, Ultrasuede,
Varis, Vibrant Performance, Vorsteiner, Weistec Engineering and 425
Motorsports. Every single role was
integral to the build of this car and I cannot thank everybody enough for
helping us create the baddest Black Series to date!"

Photo Credits: Reaction Brand Marketing + Fluid MotorUnion

Words by: Andrew Krok

Fluid MotorUnion | Reaction Branded



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State Of The Art. Exhaust sistem is massive they did world class tuning in that car.


Annoyingly it seems to have become trendy to dislike GT wings, if you don't like them, don't freekin buy one. Personally i think this looks wicked with the GT wing out the back, Epic build all round guys!


Just let me tell you that would pay just to full throttle that CLK63 AMG, wouldn`t you?


Another comment about GT wing. Just noted this: VARIS :) :::::>


We appreciate all of the kind words. The project turned out better than expected and will destroy in Global Time Attack this coming year!

@Diego Mora - it would cost you to full throttle the car... and it would be worth it. XD


Absolutley breathtakingly beautiful!


I love it, I want it! NOW!!!


Yeah but surely without that GT wing wouldn`t look that tough!


That's a sexy diffuser!!


I've always loved the CLK63! Finally, someone decided to build it up from the beast it already was. Everything is top-notch, awesome feature!


I think its amazing I hope it does good on time attack,maybe give some Evos a hard time,bout time you see another car that's nice inside time attack


Dang. I need to step up my game. Mines is stock, 'cept for a set of RPF1's...


There is nothing to to tell...AMG & Mercedes = perfect cars! Great job,author! Great job,AMG


where are these videos that were mentioned?!

i wanna hear this beast ROAR!!!!


Very, very cool. The exhaust is a work of art. Good job guys!


Needs moar weight loss.

Carbon hood, trunk, roof and doors anyone?


looks great, I'd love to get behind the wheel of this black series.


Header-back = Work of Art!


Just awesome CLK 63 Black is my fave MB !





Looks fantastic. Hope it does well. Love the EBD.. been waiting for that. do you guys have off throttle blowing too?

Im only worried about the weight.

Speedhunters needs to follow this on events. At least tell us how it does.


Not sure if I'm feelin the spoiler but I'm feelin the color. I don't know what "J.G. Matador Grey" is but Lamborghini's "Grigio Telesto" (which is what that is) is a complete win when seen on a CLK Black Series. I'd like to see one of these with a carbon front-end. Great car and great post.


It was a great experience to be a part of this project and keep an eye out for what is to come this winter. I was only tacking the base plates in the car ;) My jetta has a new owner and will more than likely be started back in in a couple years. Roberttheheavyhitter the color is not Lamborghini grigio telesto, the color is a custom made color that was specially mixed for this car had has been named J.G matador grey


I really like the idea of putting an exhaust-blown diffuser into a car. I have never been aware of that technology before. That gave me some ideas. Thanks.


Saw it real life...words can't describe!