Snox801

So what everyone opinion. I’m needing to replace my calipers before this season. Stumbled on these. I already have new rotors. So I thought what about these. It is my budget track car so don’t need to go crazy with big brake kit.
What’s everyone opinion on this kit?
These and going from rt660 to cup 2’s if they have them in my size should be just a bit better than my last years setup.

https://www.keislerautomation.com/rx8-products/mazda-rx8-nc-miata-superlite-front-caliper-kit

Ricky SE3P

iTrader: (10)

Why replace the OEM calipers if you can rebuild them for pretty cheap and fairly easily? Granted, i purchased this kit and will be installing them on my 8... Upgrading because i want to for my build more than the need for them if im being honest. However i just rebuilt my front and rear calipers like 1,500 miles ago, so i will probably be selling them when i pull them off my 8. Rebuilding and repainting them was extremely easy though.

Snox801

Similar to you why not.
I like the thicker pad and better heat dissipation.
Plus as easy as they are to rebuild I have so much going on I would still buy née and bolt them on.

jmauld

Any luck getting in touch with him recently? I’m going to order the kit, but I want red calipers instead of grey.

Snox801

I just ordered online. So no idea if he even had a number to call

Snox801

Update,
never talked to him but the calipers shipped already. So he’s still rocking parts out.

Snox801

Kit came yesterday. Everything was packaged very well and looks like it’s gonna be Awsome.
Gotta say it was shipped the very next morning after purchasing late in the day the day before.

jmauld

What wheels are you using with it?

TeamRX8

iTrader: (25)

you really can’t go wrong with anything Keisler Automation offers.

smart guy who executes well, can’t say the same for many others.
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Snox801

I didn’t think so.
Mainly because they seem to get a lot of praise from guys like you. I thought why not upgrade a bit as long as I’m doing everything. Plus a lot less inspiring weight according to them. Should be a win all the way around.

Snox801

I’m running advanti hybris 18x8 I believe they are+45 offset but not positive.
I needed 2.25” clearance and that was the minimum of what I had at what would be the closest point of contact if the caliper come directly out of the very inner side of the rotor.

Federighi

iTrader: (7)

Hey how are you guys liking the Wilwood caliper upgrade? Any impressions to share street or hpde?

I came across a good discussion on mx-5miata.net about rx8 sports brakes vs the Wilwood upgrade. Obviously different chassis but good conversation imo nonetheless. A club member from here appears to have commented on his experience a few times. Hopefully he sees this and chimes in. https://forum.miata.net/vb/showthread.php?t=742754

Ever since I reinstalled my stock front calipers, I'm missing the solid / confident pedal feel I got with my previous bbk and I'm considering some sort of caliper upgrade. The best budget options that have occurred to me seem to be a jdm Z32 kit and then the Wilwood SuperLite. Z32 calipers are easily sourced and inexpensive ($100 when needing rebuild - $250+ rebuilt) + jdm bracket ($200) so a fair bit cheaper than the Wilwood offerings but I'm curious as to what the comparative piston sizes and swept pad areas are. Probably insignificant points to consider but I am looking to increase performance / driving enjoyment and I always like to think things over before I make a decision when I can. The Wilwood is supposedly good for +9% increase in braking force, more than likely lighter than the Z32 aluminum caliper, holds thicker pads (16mm+ (Sake claims 20mm) vs typical oem 12mm) and easier to service (pad swap, etc). Also may be worth noting that while the Z32 caliper kit does retain use of the oem sport rotors, the original Z32 rotors were 280x30mm and old tech calipers are generally on the small side by modern standards.

I feel like the decision is pretty clear but what do you guys think? Any constructive input is greatly appreciated!

TeamRX8

iTrader: (25)

yet nobody provides a direct comparison against the full RacingBrake system.
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Federighi

iTrader: (7)

Yeah I'm not sure. There's a set in the FS section currently but I'd really only be interested in the front and I doubt that would work with the seller. What's he's asking is super reasonable imo.

Other than the name I unfortunately haven't heard much 1st hand experience. Are they still operating? Not sure what pad options are like. All I do know is that the mentioned calipers are well supported.

Federighi

iTrader: (7)

Found out Z32 caliper pistons are 40.45mm each. Which tuns out to be substantially larger compared to a lot of what I've been seeing listed by Wilwood in this line.

Does anyone know which model narrow SuperLite is being offered? Neither supplier specifies, curious if anyone asked as there's a few different possible configurations of size and direction with 30.75mm being most common.

Stubbs

iTrader: (1)

One of the pictures on Keisler's site shows a barely readable part number, it looks like the caliper is a Wilwood 120-11132.
If that's the correct part number it uses 1.62" (41.1mm) pistons which is a 16% larger caliper piston area . Probably fairly close pedal feel to stock, but likely noticeable if you're really familiar with the stock setup.
For reference I've got FK8 Civic Type R calipers on my RX8 with 40mm pistons which is 9.8% larger caliper piston area and there isn't much, if any, discernable difference in pedal feel.