Mercedes-Benz Suspension Applications || H&R Special Springs, LP

(W)170 chassis...waaaaay at the bottom of the page.

Would these be a fit for Crossfires? I understand that most of the suspension parts are a direct fit, but are the R170 chassis/suspension connections the same too?

And are these bigger than stock for the OEM N/A?

Is the SRT-6 interchangeable (fit-wise) with the N/A?

Whatcha' think?

 

Yes, all R170 components will work.

These swaybars are bigger than stock by a measurable degree...

OEM front on a Limited is 25mm, rear is 10mm(?)

OEM front on a SRT-6 is 28mm, rear is 15mm

H&R sways are 30mm front, 20mm rear.

The mounts that the swaybars pass through should be included with each sway bar. The ends of the swaybars on the front slide into a rubber bushing, and the end diameter of the swaybar that sticks into this bushing is the same on all sways.

I felt a VERY noticeable upgrade in the cornering feel after swapping out the front 25mm bar for the 28mm AMG/SRT bar on my white coupe. Member 04coupe is running H&R front and rear IIRC, and loves them.

Basically -- Yes, it's worth the $$$

 

Also on the page you've linked, I've been HEAVILY considering the Touring Cup Kit for the SLK320...

 

You, sir are a very good answerer. Er...is that a word?

Thanks! Birthday is coming up...

 

Those will fit. I've had both front and rear on my car for about 6 months now and they are definitely an improvement!

OEM front on a Limited is 25mm, rear is 15mm(?)

OEM front on a SRT-6 is 28mm, rear is 19mm

A few threads on the subject already...
https://www.crossfireforum.org/forum...sway-bars.html

 

Thanks for the clarification!

So really, on an SRT, it won't make as dramatic a difference as it would on the Limited...

BTW sorry for getting your name wrong LOL... Coupe, Fire, same thing

 

I would think the 30mm bar on the front of the 6 should make a noticable difference.. ,i plan on doing the front bar on my car in the near future...

 

if i read this article correctly you dont really want to inc. the rear sway bar as the xfire oversteers to much already correct? adding a larger front sway bar will help the overstreer. maybe m/b made it tuff to remove the rear sway bar for a reason!!

max on jhm2k's white coupe that mr. mopar has theres a slk32 amg front sway bar that measured 28mm. bet you could get it for cheaper than the h&r unit and your only 2mm difference
How sway bars work

 

Confirmed... Making the front less prone to roll, and keeping the rear @ factory spec helped my understeer problem a lot.

 

What would be useful is to have a stiffness or spring rate to compare the merits of one bar to the other rather than to be bench racing the differences.

Lots of good ideas arnt and you dont know until it proves to be unsuccessful. To save time effort and money, being able to measure and define the parts makes all the difference.

Id love to find a stiffer front and rear bar, but the differences do not seem worth the change over that of an SRT-6

Enjoy, Woody

 

Agreed, actual numbers make the difference... If I wasn't so sick right now I'd try and look it all up again.

But, basically what I've come to conclude to be the easiest and cheapest way to go about toning down the understeer is:

If you have a Limited by an SRT front sway bar
If you have an SRT buy an H&R front sway bar

For me having both sway bars and the koni's allows me the setup and fine tuning "I" want as I drive in city, country roads and on the track... The way I have it now is nice and crisp to where I get a decent road feel without being too stiff or jarring

 

Guys, thanks a bunch for the info and ideas! Thank's why I love this place. And you!

Nudge, nudge. Wink, wink...

Now, where would I find an SRT sway bar? Hmmm......

 

Right here on our awesome forum:
Vendor - Parts/Accessories

 

Show me a good number on the improvement for the front sway bar and Ill deal you mine. Woody

 

I don't know that I can. I just remembered seeing the evidence looking at many, many pictures of N/A's and SRT's on the same corners at the Dragon. Same entry speed, same conditions, greater body lean on the N/A's.

Does that count? Buddy? Pal? Friend? Com padre? Tovarisch?

 

Does anyone have the Mercedes part numbers for the Front Sway Bar Rubber bushings?
I just got the FCP Euro lower A-arm kit, and it has 2 boxes of sway bar bushings, but they both are the small diameter for the end of the sway bar, where it mounts on the lower a-arm. This has to be disconnected to change the lower A-arm, so I thought it would be smart to change both bushings on each side. The problem is you get 4 each of the bushing in 2 boxes, but they all are for the outer sway bar ends. (18 mm center hole) Since they included 4 bushings, when I opened the package, I figured one for each end of the sway bar, and two for the middle of the sway bar. I was only doing ONE A-Arm at a time, and figured the other end would keep the sway bar in alignment. It pretty much DID, so it would have been both a good idea, and easy to do, before putting the new Lower A-Arm in position. However, I quickly discovered I had 4 rubber bushing that would only fit the outer ends of the sway bars. The INNER sway bar bushings are 25 mm center hole.
My thought was as follows:

A. They MEANT to include both the end and center bushings for the front sway bar, but someone just grabbed 2 boxes of the outer bushings, and tossed them in the box.

B. They only were supposed to supply the outer bushings, so I wasn't supposed to actually have the second box, in other words, it was just a duplicate. But this makes no sense, as doing an A-Arm change is the IDEAL time to just slide these off, and put new ones on. It only takes a couple minutes to do both inner and outer bushings on each end.

Unfortunately, I did not have the correct inner bushings, so just put everything back together with new bushing on the ends of the sway bar, and the old bushings on the center. I REALLY hated to do this, because going back to change the inner bushings, is going to be MAJOR task, once the front suspension is reassembled. Doing it now is just a 3 minute job. Doing it after the suspension is reassembled, is likely to be a really grueling 6 hours of trying to keep everything in alignment. If you do one end at a time, when you are doing the A-Arms, then the other side keeps everything lined up, and you just slide each bushing off, and the new on to it's proper location.

I emailed FCP, giving them the Chrysler IPC number for both the inner and outer bushings on the front sway rod, but they said they cannot cross-reference the Chrysler P.N. to anything from Mercedes Benz.

So now I am stuck, since I HAVE the Chrysler 2004 Crossfire IPC printed out and in a binder, but I have NO IPC data for Mercedes Benz cars at all.

So does ANYONE have the front sway bar bushing part number callouts from the Mercedes Benx SLK 320, so I can get a Mercedes number, and see about solving this problem for the future? I will provide the information to FCP-Euro, so they can correct their kits if they are including 2 sets of the bushings, one being correct, and one being wrong, or if they are NOT going to supply the inner bushings, they can leave that box out when they ship these bushings. But I would rather they actually put 1 box of each of the 2 correct bushings, so they can quickly be changed on a Lower A-Arm replacement.

Thanks very much!

 

Needswings has the set.
Link to site: Front sway bar bushing set

 

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