Pre-Facelift Dual Exhaust ABS Material Big-Fin Rear Diffuser
As you may know, there has been a tremendous amount of research put in to find a quality rear diffuser for our W204 C300 and C350 sport models. To be exact, a rear diffuser that fits our dual exhaust with the nice aesthetic look of "big fins." Unfortunately though, not a single dual exhaust rear diffuser with the big fins has been made with OEM ABS material followed by perfect fitment. The only dual exhaust rear diffusers available on the market today, for our pre-facelift W204 models, are inexpensive eBay ones that have horrible fitment and the Eurotech Carbon Fiber one which is very expensive.($675.00)Furthermore, some individuals do not like the look of carbon fiber and have to spend even more money to get the diffuser painted.
With that being said, a vendor/sponsor on mbworld(not saying any names, as this may not be official) offered to start manufacturing these OEM ABS material big fin rear diffusers for our dual exhaust, if there is enough interest here. This way, there will be perfect fitment and would be much more affordable than these carbon fiber rear diffusers.
So, please post below so I can report back to this awesome vendor for being nice enough to even consider offering to do this for us. This way, they can see the interest level of these diffusers. To conclude, the picture below could be a representation of what it would look like. But please note, that is an aftermarket C63 AMG rear diffuser with "Big Fins," The one that may be manufactured will remove the gap for the quad exhaust and closed up for dual exhaust.
Last edited by w204_Generic; Mar 23, 2014 at 03:06 PM.
Just a quick question; can they make a diffuser that works with stock single tips? (on both sides of course) Kinda of like the one in that picture but without the gap. I'm not really interested in getting those.
And how does it work for a C300 Luxury? the back side of my car looks different. Is there a different version for this one?

I might be interested in the dual outlets, big fin, OEM Material depending on price
Just a quick question; can they make a diffuser that works with stock single tips? (on both sides of course) Kinda of like the one in that picture but without the gap. I'm not really interested in getting those.
And how does it work for a C300 Luxury? the back side of my car looks different. Is there a different version for this one?
That is just a representation of what the "big fins" could look like.
And yes luxury models would need to replace there entire rear bumper with a sport model rear bumper, to have a rear diffuser.
Last edited by w204_Generic; Mar 23, 2014 at 02:26 PM.
MCD Motorsports made one (link) but I didn't like how the fins were too close together. It looked like they took a quad diffuser and simply closed up the cutouts so that it fit a dual exhaust. They left the fins in the original location and, IMO, it'd look better if the fins were spaced further apart.
So if the new vendor made one out of ABS, with big fins spaced evenly apart, I'd be very interested!
MCD Motorsports' design:

My design:

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MCD Motorsports made one (link) but I didn't like how the fins were too close together. It looked like they took a quad diffuser and simply closed up the cutouts so that it fit a dual exhaust. They left the fins in the original location and, IMO, it'd look better if the fins were spaced further apart.
So if the new vendor made one out of ABS, with big fins spaced evenly apart, I'd be very interested!
MCD Motorsports' design:
My design:

For the price, it will be affordable as it won't be carbon fiber which will shave hundreds of dollars right off the bat.
Not everyone can swing the quad tips and CF diffuser. If this turns out to be a nice looking replacement with well-spaced fins I am sure people will be buying it.



