Yeah it sounds like you got an amazing deal on the Brembos, and certainly can’t pass that up. I will say that even though the RB rings are crazy expensive, they lasted me 4 full seasons which was astonishing. Much harder material than what I’m used to with Brembos, I wouldn’t be surprised if they last twice as long. However a trade off of that hardness is that they may also be brittle as evidenced by reports of the tabs shearing off and causing catastrophic failure. Knock on wood they’ve been great for me so far, but make me a little uneasy and I’ll be looking to replace pretty soon after I address ten other things...

 

hopefully epytec will respond. I tried it twice in German and English and haven’t received an answer.
their webpage states that they will not ship to Canada nor USA due to insurance cost.

 

Girodisk also have some 390 mm rotors. That might be another option?

https://www.girodisc.com/Girodisc-Fr...MG_p_6594.html

 

Hey Guys, If i get Epytec to ship the brackets to me, would you guys be interested in a Group Buy?

 

You guys are making it more complicated with the Epytec brackets shipping from Germany and their dodgy customer support.
The brackets I posted from eBay above are shipping from USA, and should have shipping to Canada for nomimal fee.
These brackets are legit, beefier than the Epytec, and were co-developed by Leistung Autohaus and his fabricator who is aerospace engineer.
They improve on the RacingBrake bracket design by optimizing position of the brake pad placement on the rotor.
And they will work with OEM 507 wheels, whereas RacingBrake bracket will not.

 

Hey Bud I want to support you, I know these are yours. But as a consumer yours are twice the price and do not include the extended bolts.

 

No my friend, these are not mine lol; and I am in a completely different industry (medical). Please contact Ebay seller to negotiate price and for potential Group Buy.
I had a lot of custom work completed by Leistung Autohaus for our platform, among such work was the development of said brackets.
They then CNC'd a batch that they previously tried to sell here, but there wasn't much interest then, and since they were not forum sponsors, their posts were taken down.

 

Offered them $200 on ebay. no-go. Ah well. Onto the next.

 

yeah...i've offered $250 to the ebay seller and he said no. every 2-3 weeks he sends out a notice to buy them for $300 plus shipping and tax from ebay.

 

For reference, I paid $700 to have the 1st set made, so $300-350 is very nice, especially considering scarcity. I actually recently bought another set as a spare, again, considering scarcity.
I just really wanted the bigger rotors to work with OEM 507 wheels :P but now need wider wheels to handle wider rubber.

Hit him up for a GB; there appears to be quite the interest now.

 

+1,

i think ($300)>>($350) is Kinda good price,,

my friend has a local shop here, and always making (360mm/375mm/380mm/390mm) brackets for many MB applications with almost same price..!

-;-ZAYED-;-

 

I’d be in on a group buy as well someone should see if they would give us a discount on a ~10-20 unit group buy

 

yeah...I only have gone this far because my current wheels won't fit 390's so it's something I want but don't need, but I'm all in for a group buy.

 

 

390's have a huge improvement of stopping power over the 360's. i'm planning to fit my 19's which have more clearance in the inner barrel for larger brakes so I may be ordering those ebay 390mm adapters sooner than later. just need to have the inner bore machined out of my 19's as they're coming in contact with the bearing dust cap.

 

Do the black series run a 19" spare?

 

The epytec brackets are steel compared to the 350 aluminium Ones on eBay.

that’s probably the main reason of the cost difference.

I prefer buying the whole kit with the bolts etc. Just less things to get after with the eBay brackets.

 

messaged the eBay seller last night $300 and he accepted. so $300 plus $17.xx for shipping. the annoyance is it doesn't come with any bolts or washers so I'll have to source my own.

so my setup will be, 390mm rotors from FCP, Ferodo DS2500 fronts, not sure what rear pads I want to run. Ferodo doesn't make a DS2500 rear, Pagid doesn't make any track pads in the rear either. not sure what they're thinking...maybe to keep factory pads out back? I do have a set of used Carbotech XP12's I picked up from a member here to try out. supposedly they're the best in the class but quite honestly for race pads, there are many great pads so it just depends on who you speak to.

so my track wheels are 19 inch rotary formed wheels with R888r tires...my 20 inch Vossen wheels won't fit so they'll have to be sold at some point. hopefully not at to much of a loss.

 

I am not a huge fan of using different pad compounds unless they are DESIGNED to be mixed (like some race-only Hawks, Pagids and Ferodos are), which unfortunately precludes mixing pads from different manufacturers. While you can find something that has a similar friction coefficient (mu) vs. temperature, that tells you nothing about initial bite, torque or release characteristics, which on a track can spell disaster. If you ever trail brake it will change the balance of the car mid-corner, you may unintentionally get lift-off oversteer because the rears release quicker than the fronts, or you might spin out if the rears grab quicker than the fronts (not likely on a car with ABS, but it will upset the balance - and if the electronic nannies are in fact saving you from hitting the wall every time you hit the brakes, that's not a good thing).

If you do end up having to mix pads from different manufacturers, probably the closest thing to the Ferodo DS2500s are the Endless MX72s. They are both "sport street & track day" pads and the friction coefficient is similar between them across the entire temperature range. I've been running MX72s on all four corners for five (six?) years now with LOTS of track days (and some Canadian winter driving thrown in just for good measure), and would easily rank them as good as the Ferodo DS2500s if not even better.

The Carbotech XP12 is a high-temp race only pad that has no place on a street car - it even says "NOT FOR STREET USE!" on their web site. You likely won't be able to even get them up to temperature, which means you'll basically be driving with no rear brakes at all. The OEM Brembo C63 rear pads would be MILES ahead of those... come to think of it, with the larger front rotors and DS2500s there (which changes the braking bias of the car to the front), the OEM Brembo rears just might end up being your best option. They are predictable, have excellent bite and modulation cold or hot, and can withstand reasonably high temperatures - which in your case will now be lower than before because of the larger and more aggressive fronts.

 

yeah...i'm thinking i'll need to pair my front DS2500's with MX72's as they're the closest in performance. how are they on rotor life? i do see what you mean about pairing factory rears with the DS2500's with 390's as well...i did have those in my shopping cart on FCP's site. just wasn't sure if i want to go MX72 or factory rears...its a toss up for me. the DS2500's have more bite than factory pads and have a higher rate of deceleration so i wasn't sure if the OEM rear's would pair up nicely with them. do MX72's have that same performance? DS2500's bite well in all temperature conditions, reduced in cold, but still the same or better than factory.

 

The friction coefficient vs. temperature of the MX72 is very close to that of the DS2500. I use DS2500s on my 928GT and MX72s on my C63, and while they are different cars, subjectively the braking feel of both is about the same. I have tracked both a fair bit and drive both fairly aggressively (mostly for fun - neither one is a primary vehicle / daily driver).

Regarding rotor-friendliness, I am not sure that my observations would be relevant to you as I have RB rotors that are arguably made of harder steel than OEM and the car saw a lot of track time, but on mine they have been VERY rotor friendly. With ~30 track events over three years with anywhere from 2.5 to 5 hours of track time per event (my Vette was chewing up its motor and puking up the oil so sometimes both my wife and I would drive the C63 in different run groups) and some street driving, the original RB rotors are now just below half thickness. Keep in mind that pads designed to operate at higher temperatures are more abrasive when they're cold so track use actually results in lighter rotor wear than street use, but no matter which way you look at it, they are very easy on the rotors.

I'm on my second set of MX72s, and as far as the brakes go I have no reservations whatsoever taking the car out at -25C and/or in the snow. I would not say that either of them bite as well at -25C as the OEM pads, but they bite at least 80% as well in extreme cold, and much better than OEM at higher temperatures. In other words, they behave pretty much the the same as the DS2500s.

 

I have xp12's and drive on the street. They are the best brake pad i've ever used. I have not tracked it with them yet. They are noisy specially at lower speeds which is to be expected. Getting to operating temps is a non-issue. Just saying.I literally apply 25% braking force and it's the equivalent of 80% with any other pad i've ever used or car I've driven. Comparable to carbon ceramic brake sensitivity. It's pretty epic. Not a daily driver car though.

 

great feedback guys. thanks!

 

Well... I may have taken out the Vette out on a public highway once or twice to get gas at a nearby station with slicks on and I was fine, but that doesn't mean it is a good idea. They are racing pads.

 

Well correction I've been dailying c63 for past 2 months lol. Didn't drive it in our artic blizzard, but brakes still grabbed just fine at 20*. Im just saying. These pads will make everyone think you're a cheap *** with wore out brakes going metal to metal though, no doubt! haha.