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DIY Big Brake Kit with Brembo 6 piston Calipers

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Looks good! Can’t wait to finally get this project underway.
Did you get 5 people? I woulda jumped but I’m on the 365mm and spending another 2k for 5mm diameter and 2 pistons isn’t worth it to me RN bc I don’t track my car. It is a good options for those that haven’t upgraded yet. Subscribed through. Seeing UPPs 395mm in person is very hard to unsee.
 
@mact3333 I am in the middle of upgrading my AWD dual motor to Performance model brake calipers. I bought the calipers recently off Ebay, fronts were $700 and the rears were $400. A few dings in the paint but not noticeable once installed. Otherwise they look brand new, virtually no wear on brake pads. Makes me wonder how the sellers got them, but whatever.

To others that may want to upgrade as well, I am doing this myself in the garage. Here's what's required:
  • Jack Lift Pad Adapter - $14.00 on Amazon
  • 2 ton floor jack - $140 at Harbour Freight
  • 18E Torx socket (fits caliper bolts) - $13 at Harbour Freight
  • Brake Bleed Kit - $15
  • Brake Fluid - $20
All other tools required I already had. Nothing out of the ordinary. Here's the parts list:
  • Model 3 Performance brake calipers - prices and sources will vary
  • Mountain Pass Performance Stock Sizing P3D+ front rotors - $1,040
  • Rear electronic parking brake jumper connectors from P3D+ (I just learned this from this thread!) - $???
  • MPP Stainless Steel Brake Lines - $155 (kinda silly not to upgrade from rubber lines if you are serious about braking performance)
To dispel other common myths, I mounted the front performance calipers and 355 mm rotors with 18" Aero wheels. I did have to grind a 1/8" corner off the brake pad wear indicator for clearance with MPP rotors - used a dremel tool with cutting disk.

Here's the pics and I'll post more later when I find the rear e-park brake wiring harnesses.View attachment 462209 View attachment 462210 View attachment 462219 View attachment 462220 View attachment 462222 View attachment 462222
Based of this post, I wonder if we could fit the 18" aeros on the CTS-V calipers.
 
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I know this thread has gone down a different path but I wanted to say thanks for posting all this info to let people know the swap was possible. I had the MPP 365mm grey caliper relocation kit on the car but wanted to run 18x10.5 +25 wheels with a little more offset in the rear for autocross and be able to use the aero’s, so I recently swapped to M3P front calipers and rear rotors. After selling the 365 kit, my overall cost was about $800. Got calipers on EBay & rotors at a service center.
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I agree with @superflyrolla that there is somewhat of a side upgrade topic that isn’t the oem PUP brake included in this thread that could be beneficial in its own thread. Can @jjrandorin sort through and separate the posts to make this one 100% oem tesla brake upgrade versus the CTS-V version? Topic title “CTS-V brake upgrade”?
 
I agree with @superflyrolla that there is somewhat of a side upgrade topic that isn’t the oem PUP brake included in this thread that could be beneficial in its own thread. Can @jjrandorin sort through and separate the posts to make this one 100% oem tesla brake upgrade versus the CTS-V version? Topic title “CTS-V brake upgrade”?

(moderator note)

I did just split off what looks to be the discussion about the non OEM brake upgrade kit that is being discussed. We do normally allow people to put together group buys of stuff as long as they are not affiliated with the company, and its not some sort of "referral" / "referral code" type situation (where its obvious someone is getting a financial benefit from doing it).

Looking at this, its not obvious that is happening, but its not obvious thats NOT happening either. With that being said, I am erring on the side of letting it go, at least for now, because there is a chance that this is just crowd sourced upgrading, which we support, vs non vendor type sales, which we dont.

If it end up looking different, I will re visit.
 
(moderator note)

I did just split off what looks to be the discussion about the non OEM brake upgrade kit that is being discussed. We do normally allow people to put together group buys of stuff as long as they are not affiliated with the company, and its not some sort of "referral" / "referral code" type situation (where its obvious someone is getting a financial benefit from doing it).

Looking at this, its not obvious that is happening, but its not obvious thats NOT happening either. With that being said, I am erring on the side of letting it go, at least for now, because there is a chance that this is just crowd sourced upgrading, which we support, vs non vendor type sales, which we dont.

If it end up looking different, I will re visit.
Thanks for doing this. Can you change the title to reflect GM 6 piston Brembo calipers?
 
Thanks for doing this. Can you change the title to reflect GM 6 piston Brembo calipers?

Im not too much a fan of super specific thread titles for stuff like this when its not a vendor product... but with that being said, perhaps PM me exactly what you think the thread title should be and I will consider it.

(moderator note)

Thread title changed to the one suggested by @drpheta
 
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From my research width wise the Tesla brembo pad and ctsv is the same width but depth wise the ctsv is 10mm more
3FCF776B-32BD-4BE6-93B2-9DA31E147F93.jpeg
8D9D7CE9-FCEB-45DE-849E-3CE8D331B1E7.png
 
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Guys, I got correct part numbers for the calipers here. I referenced ZZPerformance, Racing Brake, GM's site, and various LS1, CTS, Corvette, S14, GTR, etc forums to gather this info. I hope there are no typos here.

Gen 2 CTS-V 6 Piston
Yellow:
GM P/N 20982719 or AC Delco P/N 172-2521
GM P/N 20982734 or AC Delco P/N 172-2522

Silver:
GM P/N 25912477 or AC Delco P/N 172-2487
GM P/N 25912967 or AC Delco P/N 172-2488

Red:
GM P/N 22885106 or AC Delco P/N 172-2595
GM P/N 22885108 or AC Delco P/N 172-2596

ATS-V
Gold:
GM P/N 23121834 or AC Delco P/N 172-2685
GM P/N 23121835 or AC Delco P/N 172-2686

Red:
GM P/N 23121832 or AC Delco P/N 172-2683
GM P/N 23121833 or AC Delco P/N 172-2684

Silver:
GM P/N 23121830 or AC Delco P/N 172-2681
GM P/N 23121831 or AC Delco P/N 172-2682

Camaro 6G SS 1LE 6 Piston
Red:
GM P/N 84063672 or AC Delco P/N 172-2741
GM P/N 84063673 or AC Delco P/N 172-2742

Camaro 5G ZL1
Black:
GM P/N 20944530 or AC Delco P/N 172-2537
GM P/N 20944518 or AC Delco P/N 172-2538

2015-2019 Corvette Z06 - has dimpled pistons for supposedly better cooling
Red:
GM P/N 23242497 or AC Delco P/N 172-2669
GM P/N 23242498 or AC Delco P/N 172-2670

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Caliper bolts from the CTS-V are M14 x 2 and 56mm long. Stock M3 caliper bolts are M12 x 1.75 and 45mm long. So... You'll have to either:

1. Easiest method. Drill out the pilot holes with a 14mm or 9/16" drill bit. Then, purchase the GM 56mm long M14 x 2 bolt and use washers to eat up approximately 12mm of the bolt to prevent it from protruding too far. GM also has 45mm long M14 x 2 bolts made for the Camaro, or eBay has them available as well. If you do this and ever decide to go back to stock, then you just need to shim the widened pilot holes with a 14mm OD 1mm thick aluminum pipe cut into a shim (ID = 12mm to fit the stock caliper bolt). Amazon sells the aluminum pipe for $10.

2. Keep things stock method. Get the caliper threads tapped with a 24mm long M12 x 1.75 time-sert. These are hardened steel threads that are commonly used to repair stripped aluminum threads in engine blocks and such. Rethreading the calipers to fit M12 x 1.75 bolts should be easy. You find a machine shop or auto shop to tap the existing calipers with the time-sert insert, and that's it. You can buy the time-sert kit and do it yourself as well. It's about $120 for the kit, and $25 for the 24mm long inserts. Many places to buy time-sert kits. Just be aware that you have to cut new threads into the calipers if you go this route.

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Brake pads. Stock Brembo pads are P/N 171-1040, and at this time are about $225. I hear they're decent, but a little dusty. My research in other forums revealed users tracking them with good results, but they'll wear out quickly. Otherwise, just grab your preferred street or track pad made for these GM calipers (which will likely match many other 6 pot Brembos, but I have not confirmed that).

You will need to purchase the pad pin kit for the above calipers P/N 18K2108X

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Rotors. This is where we are today with the Girodisc group buy. Hopefully, they pull through with the currently committed people. That way we can simply purchase off the shelf parts from them. 370mm x 34mm rotor rings for the CTS-V, Corvette, Camaro are already available through Girodisc, so having the hats made is the last step.

Alternatively, you can buy the Racing Brakes kit that includes all you need to install this BBK except the calipers (see above for your choice of color and logo). RB BBK (370x34) for Tesla M3 Retrofit to Cadillac CTSV V2 or Camaro G5 ZL1 6 Pot Calipers
Many of us much prefer to go with Girodisc, though.

Lastly, as someone already did for the previous gen Model S, you can design your own hat and mate it to the correct Brembo rotor ring. You simply need to have access to your own machine shop and design studio to do this. DIY...Big Brake Kit for Under 2k
 
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If you can swing the upcharge, the Corvette calipers are niiiiiiice. The red matches the stock Performance calipers perfectly, as they're "Brembo red". I was originally going to go silver, paint the "V" branded face, and put red lettering decals on. But, I really like red calipers on my red car.

So, I'm going to mask off the "Corvette" branded face and paint it with red high temp 2k paint. I have white Brembo decals to slap on if needed.
 

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