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2017 C300 4matic Brake Upgrade - Nonsport to Sport
Hi All!
New to the Mercedes world - recently picked up a 2017 C300 4matic which does NOT have the "sport" package. I discovered this when I went to replace the brakes and rotors. My rear rotors are NOT vented so the ones I purchased I guess were for the sport package as they were vented and the caliper bracket wasn't wide enough to accommodate.
With that said, I am looking to upgrade the front and rear to the "sport package" spec - I did some googling and really couldn't find concrete information on what is different, I also went to an MB parts website and tried to compare parts but some of the part descriptions were vague.
I ultimately want to upgrade as the sport package rotors and pads seem to be way more available with many more options than the "standard" package one I have. Not sure if it is just a difference of calipers and brackets, or if a ton of stuff needs changed and it ends up not being worth it in the end.
New to the Mercedes world - recently picked up a 2017 C300 4matic which does NOT have the "sport" package. I discovered this when I went to replace the brakes and rotors. My rear rotors are NOT vented so the ones I purchased I guess were for the sport package as they were vented and the caliper bracket wasn't wide enough to accommodate.
With that said, I am looking to upgrade the front and rear to the "sport package" spec - I did some googling and really couldn't find concrete information on what is different, I also went to an MB parts website and tried to compare parts but some of the part descriptions were vague.
I ultimately want to upgrade as the sport package rotors and pads seem to be way more available with many more options than the "standard" package one I have. Not sure if it is just a difference of calipers and brackets, or if a ton of stuff needs changed and it ends up not being worth it in the end.
Second one is going from W205 C 300 to W205 C 43 (which is what you are trying to do as if you didn't know yet, the amg line/sport package on W205 C 300 uses the same brakes as the W205 C 43 just that the "Mercedes-Benz lettering" on the caliper is replaced which results in a different part number, anyways so that thread on W205 C 300 to W205 C 43 brake conversion is available below: https://mbworld.org/forums/c-class-w...e-project.html
The front "sport" calipers (sport/C400/C450/C43) will directly bolt-up to your existing caliper brackets with no modifications needed. You will need 360mm rotors for these calipers. All bolt-on stuff.
If you also want a sizeable upgrade for the rear, you could consider going with C63 rear brakes. The advantages here are better braking, better looking calipers and you would end up with 360mm rotors on the rear too (matching the front). The rear C63 calipers will also bolt-up to your existing brackets but will require some shims on the caliper bolting surface to center the caliper on the rotor. Not a big deal, but will be required because the rear C63 rotors have a different offset compared to the other C-classes.
If this is something you are considering doing, I'm selling my front C43 calipers and rear C63 calipers, as I sold my C before I had the chance to complete my upgrade.
The front "sport" calipers (sport/C400/C450/C43) will directly bolt-up to your existing caliper brackets with no modifications needed. You will need 360mm rotors for these calipers. All bolt-on stuff.
If you also want a sizeable upgrade for the rear, you could consider going with C63 rear brakes. The advantages here are better braking, better looking calipers and you would end up with 360mm rotors on the rear too (matching the front). The rear C63 calipers will also bolt-up to your existing brackets but will require some shims on the caliper bolting surface to center the caliper on the rotor. Not a big deal, but will be required because the rear C63 rotors have a different offset compared to the other C-classes.
If this is something you are considering doing, I'm selling my front C43 calipers and rear C63 calipers, as I sold my C before I had the chance to complete my upgrade.
Thank you both for the information, it's much appreciated. I wasn't sure what options were available, if any, and now I have a better understanding.
Just to clarify:
Front calipers: AMG/Mercedes Benz are the "sport" from either C43 or C63, and the only difference is the lettering on the caliper and color - the actual caliper size is the same
Rear calipers: The ones that I have (non vented, small), the "sport" package is a larger caliper which is also shared on the c43, and as Keith66 pointed out, the C63 rear caliper is even larger than the c43/sport at 360mm.
If I were to make the switch, I understand I need the correct parking brake cable (as Keith66's thread pointed out) - is there any coding/software configuration that needs to be done on the vehicle? Lastly, as larger calipers are being introduced, is there anything that needs to be taken into account for with brake lines and/or the master cylinder? Will the factory 17" wheels clear the caliper and larger rotors?
Originally Posted by Keith66
If this is something you are considering doing, I'm selling my front C43 calipers and rear C63 calipers, as I sold my C before I had the chance to complete my upgrade. https://www.ebay.com/itm/354730203370
Thank you both for the information, it's much appreciated. I wasn't sure what options were available, if any, and now I have a better understanding.
Just to clarify:
Front calipers: AMG/Mercedes Benz are the "sport" from either C43 or C63, and the only difference is the lettering on the caliper and color - the actual caliper size is the same
Rear calipers: The ones that I have (non vented, small), the "sport" package is a larger caliper which is also shared on the c43, and as Keith66 pointed out, the C63 rear caliper is even larger than the c43/sport at 360mm.
If I were to make the switch, I understand I need the correct parking brake cable (as Keith66's thread pointed out) - is there any coding/software configuration that needs to be done on the vehicle? Lastly, as larger calipers are being introduced, is there anything that needs to be taken into account for with brake lines and/or the master cylinder? Will the factory 17" wheels clear the caliper and larger rotors?
Appreciate the links, I actually saw your ebay listing prior to you posting, once I get a plan put into place, I'll reach out!
You're very welcome and happy to help!
You have it right except for the C63 front calipers will not fit on your car without changing the caliper mounting bracket and possibly other things I'm not aware of. So if you want simple bolt-on upgrades up front, the C43 front calipers are as big as you can go on the front without additional modifications.
No coding is necessary and from everything I've seen, all the stock brake lines and master cylinder remain as-is and work just as well. I'd like to add that I have not done this work myself (never got to it) but I've obtained the information I have from web research and from member daggger22 here who has actually done this. So dagger22's info will be your source of truth because he actually did it and said he had no issues with the master cylinder, etc.
You'll find a lot of that info in the threads that W205C43PFL posted above.
You will definitely need 18"+ wheels, the 17s won't clear.
You have it right except for the C63 front calipers will not fit on your car without changing the caliper mounting bracket and possibly other things I'm not aware of. So if you want simple bolt-on upgrades up front, the C43 front calipers are as big as you can go on the front without additional modifications.
No coding is necessary and from everything I've seen, all the stock brake lines and master cylinder remain as-is and work just as well. I'd like to add that I have not done this work myself (never got to it) but I've obtained the information I have from web research and from member daggger22 here who has actually done this. So dagger22's info will be your source of truth because he actually did it and said he had no issues with the master cylinder, etc.
You'll find a lot of that info in the threads that W205C43PFL posted above.
You will definitely need 18"+ wheels, the 17s won't clear.
Yes there won't be any issues on the master cylinder with the front and rear brake upgrades. On my previous C class i have done the C63 front 6 pot with 360mm and C63 rears (you need shims and the electronic brake cables), and now with the CLS i have done the front 6 pot upgrade with 390mm rotors (keeping the rears cos the calipers have a larger surface compared to the C63, it is identical to the 2019 and 2020 E63s specific year)
Had helped 2 other friends with their C43 brake upgrades as well and they are direct bolt-ons with no fuss.
Additional point to consider since you are doing the upgrade is whether you would want to get stainless steel braided lines.
If you are just upgrading to the C43 brakes, they are pretty much bolt on and you wont have to worry about the brake line length.
IF you are considering to upgrade to the C63 calipers, then you need custom brackets as the caliper bolt is top mounted and you would need custom brake lines too.
Additional information as well for brake pads, I highly recommend the Powerstop Z17 or Z23 ceramic brake pads... they brake well, they brake quiet, and they produce little brake dust therefore keeping your wheels clean (https://www.powerstop.com)
Yes there won't be any issues on the master cylinder with the front and rear brake upgrades. On my previous C class i have done the C63 front 6 pot with 360mm and C63 rears (you need shims and the electronic brake cables), and now with the CLS i have done the front 6 pot upgrade with 390mm rotors (keeping the rears cos the calipers have a larger surface compared to the C63, it is identical to the 2019 and 2020 E63s specific year)
Had helped 2 other friends with their C43 brake upgrades as well and they are direct bolt-ons with no fuss.
Additional point to consider since you are doing the upgrade is whether you would want to get stainless steel braided lines.
If you are just upgrading to the C43 brakes, they are pretty much bolt on and you wont have to worry about the brake line length.
IF you are considering to upgrade to the C63 calipers, then you need custom brackets as the caliper bolt is top mounted and you would need custom brake lines too.
Additional information as well for brake pads, I highly recommend the Powerstop Z17 or Z23 ceramic brake pads... they brake well, they brake quiet, and they produce little brake dust therefore keeping your wheels clean (https://www.powerstop.com)
Yes there won't be any issues on the master cylinder with the front and rear brake upgrades. On my previous C class i have done the C63 front 6 pot with 360mm and C63 rears (you need shims and the electronic brake cables), and now with the CLS i have done the front 6 pot upgrade with 390mm rotors (keeping the rears cos the calipers have a larger surface compared to the C63, it is identical to the 2019 and 2020 E63s specific year)
Had helped 2 other friends with their C43 brake upgrades as well and they are direct bolt-ons with no fuss.
Additional point to consider since you are doing the upgrade is whether you would want to get stainless steel braided lines.
If you are just upgrading to the C43 brakes, they are pretty much bolt on and you wont have to worry about the brake line length.
IF you are considering to upgrade to the C63 calipers, then you need custom brackets as the caliper bolt is top mounted and you would need custom brake lines too.
Additional information as well for brake pads, I highly recommend the Powerstop Z17 or Z23 ceramic brake pads... they brake well, they brake quiet, and they produce little brake dust therefore keeping your wheels clean (https://www.powerstop.com)
Dude... outstanding paint job on the calipers and that yellow compliments the color scheme of your car perfectly! Very, very nice!
Yes there won't be any issues on the master cylinder with the front and rear brake upgrades. On my previous C class i have done the C63 front 6 pot with 360mm and C63 rears (you need shims and the electronic brake cables), and now with the CLS i have done the front 6 pot upgrade with 390mm rotors (keeping the rears cos the calipers have a larger surface compared to the C63, it is identical to the 2019 and 2020 E63s specific year)
Had helped 2 other friends with their C43 brake upgrades as well and they are direct bolt-ons with no fuss.
Additional point to consider since you are doing the upgrade is whether you would want to get stainless steel braided lines.
If you are just upgrading to the C43 brakes, they are pretty much bolt on and you wont have to worry about the brake line length.
IF you are considering to upgrade to the C63 calipers, then you need custom brackets as the caliper bolt is top mounted and you would need custom brake lines too.
Additional information as well for brake pads, I highly recommend the Powerstop Z17 or Z23 ceramic brake pads... they brake well, they brake quiet, and they produce little brake dust therefore keeping your wheels clean (https://www.powerstop.com)
Dude .... Outstanding works...
Just wanna check since you said both front and rear rotors can directly bolt up...
I was trying to replace mine, the rear one, with a 360mm rotors (which is like the C63 version) my current rear brake kit, the rotor is 360mm but I couldn't find a suitable replacement since this one almost wore up
But I checked the specs both MB A2314230212 and Brembo 09.B879.11 states Centering with 67mm while normal W205 C-class is 69mm
And my mechanic said it won't fit.. (though I highly doubted that, coz I am currently using it)
if yours are fit would you mind tell me the part number you used? either or both MB or Brembo would be a great help...
Thank you!
Dude .... Outstanding works...
Just wanna check since you said both front and rear rotors can directly bolt up...
I was trying to replace mine, the rear one, with a 360mm rotors (which is like the C63 version) my current rear brake kit, the rotor is 360mm but I couldn't find a suitable replacement since this one almost wore up
But I checked the specs both MB A2314230212 and Brembo 09.B879.11 states Centering with 67mm while normal W205 C-class is 69mm
And my mechanic said it won't fit.. (though I highly doubted that, coz I am currently using it)
if yours are fit would you mind tell me the part number you used? either or both MB or Brembo would be a great help...
Thank you!
Hi, i got mine as a whole kit for my previous W205, and the rears are different from my current CLS rears.
I did a search online on the Brembo website and this has the list: https://www.bremboparts.com/europe/e...87/000108005-1
Take a look and compare, hope this helps. If you still need to confirm on the original rotor part number just let me know...
Just a note on where i circled in orange.... this should line up for the rotor bolt to be secured in place. wondering why yours is not aligned. hmmmm...
Just a note on where i circled in orange.... this should line up for the rotor bolt to be secured in place. wondering why yours is not aligned. hmmmm...
Thanks, Dagger!
You're absolutely right — it's not aligned. That retaining screw is really just there for assembly and servicing convenience, so it's not a big deal if it's not used.
But you actually hit the nail on the head regarding why I originally thought mine was the C63 version. That retaining screw is specific to the C63 variant — specifically the Brembo 09.B879.11, as listed in the link you shared. It doesn’t line up with any of the rotors for other W205 models.
So now I'm really curious — do you happen to remember which version you were running, Dagger? Since your rotors fit perfectly with the retaining screw, it’d be super helpful to know. 🧐
Anyway, I just went ahead and ordered two Brembo 09.B879.11 rotors to test my theory. I’ll update once they arrive and I’ve had a chance to fit them. 🤪
You're absolutely right — it's not aligned. That retaining screw is really just there for assembly and servicing convenience, so it's not a big deal if it's not used.
But you actually hit the nail on the head regarding why I originally thought mine was the C63 version. That retaining screw is specific to the C63 variant — specifically the Brembo 09.B879.11, as listed in the link you shared. It doesn’t line up with any of the rotors for other W205 models.
So now I'm really curious — do you happen to remember which version you were running, Dagger? Since your rotors fit perfectly with the retaining screw, it’d be super helpful to know. 🧐
Anyway, I just went ahead and ordered two Brembo 09.B879.11 rotors to test my theory. I’ll update once they arrive and I’ve had a chance to fit them. 🤪
Hi, unfortunately its been a long time ago that i have done the upgrade for my previous W205...... when i bought the setup it was a complete set, i did not take note of the part numbers.
I replaced with a set of 2 piece set from Platz motorsport back then after the stock rotors were worn.
I managed to find an old link here, but again there was no rotor part reference. - https://mbworld.org/forums/c-class-w...brake-kit.html
I actually drilled the hole separately on the rotors to retain the screw.
Hi, unfortunately its been a long time ago that i have done the upgrade for my previous W205...... when i bought the setup it was a complete set, i did not take note of the part numbers.
I replaced with a set of 2 piece set from Platz motorsport back then after the stock rotors were worn.
I managed to find an old link here, but again there was no rotor part reference. - https://mbworld.org/forums/c-class-w...brake-kit.html
I actually drilled the hole separately on the rotors to retain the screw.
Hope all works well for you!
Hi Dagger, no problem.
I just tried the Brembo one, perfectly fit (except the retaining screw🤪 no issues at all.. Thanks so much for your insights! 😎
Hi Dagger, no problem.
I just tried the Brembo one, perfectly fit (except the retaining screw🤪 no issues at all.. Thanks so much for your insights! 😎
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no issues at all.. Thanks so much for your insights! 😎
