ckovach

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Hi everyone...I'm new to the forum. I have searched quite a bit here, and on the MBWorld and BenzWorld forums, but I have not been able to sort this out. A few members here have posted some good info, including many part numbers, and I am hopeful that you can help me...I need to order all of the parts to upgrade my SLK32 to SLK55 brakes.

I know that I want the '05-'07 calipers, which are also the '08 and later 030 performance package calipers (and apparently also the CLK63 calipers). And while I would also like the 030 rotors, this is where I am getting confused by part numbers and prices. So, at the risk of being redundant, can someone please post both of the sets of part numbers for the whole setup -- standard and 030 with the 6 pot fronts? Including backing plates and sensors? Again, I apologize if this has been posted, but I want to be certain that I am ordering the right parts. Thanks!

etyu

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Hope this thread is useful: http://www.slkworld.com/ask-dansslk/...t-08-07-a.html

I'm not sure how it works with the R170 though.

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Eddy

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Pewter/Beige, PIII package, Airscarf, Hands-Free Communication System, Lighting package
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ckovach

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It's very helpful, but I am still a bit confused regarding specific part numbers for the non-030 versus 030. For example, if the front calipers are supposed to be the same for 2005-2007 and the 030 package 2008, what is the difference between:

003 420 47 83 SLK55/CLK55 caliper L
003 420 48 83 SLK55/CLK55 caliper R

and

003 420 67 83 - SLK55 [030]/CLK63 calliper L
003 420 68 83 - SLK55 [030]/CLK63 calliper R ?

Are the calipers same spec, different (outsourced) manufacturer? Is there any significant difference (such as weight, contruction materials)? The price appears to be the same.


Also, can someone verify whether the 030 rotors (14.2") weigh more or less than the non-030 rotors (13.4")? The 030 is larger and thicker, and they are both composite rotors, yet some have claimed that the 030 is lighter...Is this correct? And if so, is it the rotor, or the caliper, or both? I don't need the extra stopping power of the 030s, but I want the lowest possible unsprung weight...hence, my confusion/dilemma.

Thanks again for any input.

DansSlk

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The calipers are the same but sometimes you can have one part under 2 numbers for various reasons.

The 030 rotors are likely heavier than the non-030 or at the very least the same weight, it sounds to me like somebody who is trying to justify why they spent money on a pack to weigh down the car they just purchased and are getting 'creative' with the figures.

To get the lowest possible weight without it being stupidly expensive then use non-030 brakes with some OZ alloys for example, if you have serious cash to burn i would use carbon brakes.

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ckovach

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Thanks, Dan. The bigger diameters certainly look cooler, but if they're much heavier I don't really want them. If they are the same weight, I'd probably get them. Someone on the MBWorld forums posted the 030 weight at 22.6 lb (which seems pretty light for a 360 mm rotor), but I cannot find any info on weight for the non-030 rotors. The rear 030 rotors are 18.8 pounds, which should be the same on both. If the non-030 front rotor is around that weight, it might have a handling advantage. Difference in price appears to be pretty nominal -- about 80 bucks per rotor, which compared to the outrageous price of either one and the total cost of the conversion isn't really that significant.

I agree with you on the OZ wheels and almost bought a set before I happened to come across a closeout deal on staggerred 18" Kosei K1's. They're not forged, but they're pressure cast and machine turned for strength and weigh in around 16-18 lb. Other than OZ, I couldn't find anything lighter that wasn't 5 times the price, which I just couldn't justify. I think a lot of merc owners shy away from the Japanese rims for fear of seeming "ricey", but these are a light, high performance wheel that looks good on the car.