SLK55 Brake Upgrade Help - Mercedes Benz SLK Forum

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#1 Old 09-02-2008
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SLK55 Brake Upgrade Help

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!
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#2 Old 09-02-2008
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Hope this thread is useful: https://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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Pewter(cubanitsilber metallic)/Beige, PIII package, Airscarf, Hands-Free Communication System, Lighting package; Designo Black Leather Cover on e-brake handle(Thank you Bill T), SmartTop v3.x, John's 3BFM, M113 AMG OEM air filters, Modified R170 ant., clear side-markers & front parking lamps w/error-free LEDs, chromed front & rear turn indicator lamps, steel mesh at battery bay cover & cabin air intake, sock-over-seatbelt buckles, belt-loop guide protectors, Lamin-X fog lamp protectors, bilateral rear fog lamps enabled, AMG crest on gear shift knob
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#3 Old 09-02-2008
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Originally Posted by etyu View Post
Hope this thread is useful: https://www.slkworld.com/ask-dansslk/...t-08-07-a.html

I'm not sure how it works with the R170 though.
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.
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#4 Old 09-03-2008
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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.
#5 Old 09-03-2008
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Originally Posted by DansSlk View Post
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.
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.
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#6 Old 03-08-2009
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You're looking at around 6,000$ to replace all rotors, calipers and pads on all 4 wheels. I called a dealer and asked. It does not include labor.
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#7 Old 06-15-2009
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I'd say their lighter as they run an aluminum hat- I have them but never weighed them when I put them on.
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#8 Old 06-16-2009
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Are you sure 030 is 360mm ? There are three rotors the plain jane, and 340 and 360 composites. This is the BS rotor, most six pot amg composite rotors are 340mm and I thought the 030 was same as a 2005 spec car ie 340mm.
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