C8 Z06 J56 Caliper part numbers










I just came back from a Nurburgring track day this past weekend and I'm still on the fence of what to do next. I'm currently on Girodisk rotors front and rear, RBF600, Carbotech xp12's and this year Cup 2's in stock sizes on MRR z06 replica wheels. The cup 2's are like magic, I was carrying much more speed through the corners than last year and getting on the gas sooner and never had the rearend step out.
My xp12's are getting low and while I didn't experience fade or shudder, there were some weird and hard to explain moments where the brake just didn't seem to hook on the first push but then it would catch and feel normal. I found that three laps on the Nordschleife was my personal limit with how I use the brakes. I'm not saying there's anything wrong with my hardware set-up...I just don't have full confidence in it and want something that will simply remove brakes from my train of thought. Last year it was tires, Cup 2's have fixed that, just wondering what that answer is in the form of brakes.
I'll be running SPA in June, probably on a fresh set of pads, not sure which ones yet so I'll report back on my experiences after that. Nordschleife is a completely different animal than a normal track and I know from driving with other folks that my braking technique is probably not ideal there but I'm still learning it.
I just came back from a Nurburgring track day this past weekend and I'm still on the fence of what to do next. I'm currently on Girodisk rotors front and rear, RBF600, Carbotech xp12's and this year Cup 2's in stock sizes on MRR z06 replica wheels. The cup 2's are like magic, I was carrying much more speed through the corners than last year and getting on the gas sooner and never had the rearend step out.
My xp12's are getting low and while I didn't experience fade or shudder, there were some weird and hard to explain moments where the brake just didn't seem to hook on the first push but then it would catch and feel normal. I found that three laps on the Nordschleife was my personal limit with how I use the brakes. I'm not saying there's anything wrong with my hardware set-up...I just don't have full confidence in it and want something that will simply remove brakes from my train of thought. Last year it was tires, Cup 2's have fixed that, just wondering what that answer is in the form of brakes.
I'll be running SPA in June, probably on a fresh set of pads, not sure which ones yet so I'll report back on my experiences after that. Nordschleife is a completely different animal than a normal track and I know from driving with other folks that my braking technique is probably not ideal there but I'm still learning it.
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I'll be running SPA in June, probably on a fresh set of pads, not sure which ones yet so I'll report back on my experiences after that. Nordschleife is a completely different animal than a normal track and I know from driving with other folks that my braking technique is probably not ideal there but I'm still learning it.
Final two cars have AP/Brembo bbk front and rear. No complaints there, but the factory z51 with hawk dtc are very competitive time wise. Even better during a session at Homestead.
Another note loosely related here : one of our cars is a brake upgraded to z51 take offs from an AP car. Everything fit except the ebrake. Had to use a grinder and take 3/16” of aluminum off the inside-back surface to clear the z51 rotor.
Found this site to be the best to find part numbers with specifications and fitment guides,, prices there are a different story LOL.
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I'm looking at the bright red calipers as car is Artic White, these are the number and prices I've found but no promises on anything. Keep in mind prices vary from the different online dealers and who knows if any of this is available with the strike.
Front Calipers
Driver 85636352 J56 J6F Price 450-480
Pass. 85636355 J56 J6F Price 450-480
Rear Calipers
Driver 85621103 J56 J6F Price 320
Pass. 85621104 J56 J6F Price 320
So Calipers are roughly $1600. Which is just about the same (+-$100) as new Z51 calipers based on Rock Auto prices.
Rotors are the killer so to speak as compared to a Z51 setup.
Front 84041944 Price 500 x 2 I guess these aren't directional as only saw a single part number.
Rear 86822032 Price 520 x 2
With 4 rotors you're looking at about $2100, Z51 new OEM's from Rock Auto about $690. For an extra $1K ($3K total) you can get the Girodisk setup for the Z06 which might be something to think about.
Carbotech 1521 street pads $550
calipers $1600
Rotors $2100
Pads $550
Total $4250
There'd be some incidentals, pin kits, Z06 front hoses (maybe), I'd guess $200 more. Anyone know if SS lines are generally available?
So somewhere around $4500 for both ends. Roughly $5500 with the Girodisk setup.
A new Z51 setup would be $2800ish new (plus incidentals) and if you swapped the front with Girodisk, you'd be somewhere around $3600 give or take. A sidebar is you can buy the Z51 calipers and rotors used for $1500-$1700 via car-parts.com and there are a ton available. So with new pads and Girodisk front rotors you'd be somewhere around $3K.
One thing, these prices don't address the e-brake. Best guess for Z06 solution is around $1K, Z51 about 1/2 of that. Used Z51 parts are available but expensive. Frankly I never used the e-brake in my manual C7 so I'd never use it on the C8.
Here's a few more part number of the rear calipers.
Driver
85621099 Blk
85621101 Yellow J56
85621103 Red J56
85621105 Red Edge 6JN
85621107 Dark Gray
85621109 Yellow J57
85621111 Orange
85621113 Red J57
Passenger
85621100 Blk
85621102 yellow
85621104 red J56
85621106 red edge
85621108 Dark gray J57
85621110 yellow J57
85621112 orange j57
85621114 red j57
85621115 red edge J57
Parking Brake Relocation Bracket for the 2020+ C8 Corvette w/ Brembo GT BBK sold by Motoroso | Motoroso
Z06 e-brake caliper are $800ish.
Last edited by gtpvette; Nov 24, 2023 at 09:05 PM.











