2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

KSP Attain rear brake kit questions

Old Feb 6, 2015 | 04:17 AM
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KSP Attain rear brake kit questions

i like to keep track of what's actually out there still for these cars.

for the rear brakes ive been doing some homework on the available options. right now there seems to be a bracket only from super now and there was a rumored KSP kit, but i never heard back from them or their affiliate.

a member on the forum threw me a bone and gave me this link:

Attain Rear Big Brake Rotor Kit FC3S - RHDJapan

ive got some questions about the kit..

what do you guys figure they mean exactly by extra fabrication? grinding or machining?

why would they need to include hub centric ring spacers? just cause theyre nice or is there a function for the kit?

the rear brakes appear to be solid, so im guessing theyre a cheap version of the RZ's. when someone needs replacements, would they be finding a domestic race brake shop for measurements or chasing attain KSP?

thanks for input. id love to match this with some mandevilles up front one day. searched and researched rear brake threads.
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Old Feb 6, 2015 | 06:17 AM
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You can order it for standard FD rotors instead of the RZ spec. RZ rotors are hard to come by and as far as I know only 2 places to get them.
The difference is 1"
It did take some grinding to fit ill see if i can find a photo.

There was someone selling the corksport kit a few weeks back for $400 which is what the RZ rotors alone cost. The corksport kit was a copy of the attain kit or maybe even the same kit
My guess is the photo with the solid rotors is a generic photo or it is the standard FD kit with cheap rotors. Another thing to consider is the freight costs on the RZ kit is a lot of money from japan compared to the standard FD kit which ships less rotors
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Old Feb 6, 2015 | 09:56 AM
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Originally Posted by Efinity
what do you guys figure they mean exactly by extra fabrication? grinding or machining?
I think there is just some light grinding, that's all there is on the super now kits, and I think they're exactly the same:
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Originally Posted by Efinity
why would they need to include hub centric ring spacers? just cause theyre nice or is there a function for the kit?
The FD rotors have a different hub bore than the FC. The ring is to take up that space and center the rotor on the hub.

Originally Posted by Efinity
the rear brakes appear to be solid, so im guessing theyre a cheap version of the RZ's. when someone needs replacements, would they be finding a domestic race brake shop for measurements or chasing attain KSP?
I never noticed that before.... I assumed they were just stock RZ rotors. *shrug* I wouldn't bother with the kit, the RZ rotors are just too expensive to be worth it. You're better off making a custom BBK with an aluminum hat and universal rotor ring.
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Old Feb 6, 2015 | 10:32 AM
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just as a FYI- ordering the standard non RZ kit with shipping I paid like $130, think the kit itself was about $90.
Combine it with a pair of your choice of FD rotors and its actually pretty economical
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Old Feb 6, 2015 | 10:34 AM
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From: https://www2.mazda.com/en/100th/
Originally Posted by Efinity
the rear brakes appear to be solid, so im guessing theyre a cheap version of the RZ's.
since we didn't get the 99+ Rx7's we tend to refer to things generically. in the case of the brakes the 99+ Rx7's came in 4 flavors.

the 16" wheel cars, kept the same brakes as the US spec FD had, and also the 265ps engine.

the 17" wheel cars, got the larger brake set, the 280ps engine, etc.

the RZ had the same big brake set, as the 17" wheel cars, but the RZ rotors have a different coating on them. its not a performance thing, just a different color for the hub

and then the spirit R has another coating.

so there are cheap versions of the RZ rotors, but they all use the same piece of metal.
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Old Feb 6, 2015 | 03:56 PM
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Rob, where is the non rz kit?
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Old Feb 6, 2015 | 08:20 PM
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Originally Posted by Efinity
Rob, where is the non rz kit?
Just Ask him for the 16" rim kit http://www.rhdjapan.com/super-now-fd...-set-fc3s.html
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Old Feb 6, 2015 | 09:07 PM
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Oh nice I get it now. How much bigger are the fd 16 inch wheel rotors than the fc's rear rotors? I'm looking to dial in some rear bias mechanically.
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Old Feb 6, 2015 | 09:34 PM
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The FD rotors are about an inch bigger.

I am having brackets and hub centric rings made to run Mustang Cobra rear rotors on the car. They are basically the same size as the US FD rear rotor. The FC hubs themselves need to be clearanced slightly to fit the rotor hat.

After that you can use good quality Centric/Stoptech blank rotors for about $40 each.

I am running 350z Brembo rotors up front with the stock 4 pot calipers at the moment.

The Super Now kit to run the FD 16 inch rotors is really not too bad at all though.
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Old Feb 6, 2015 | 09:44 PM
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Ah awesome pmd and curious about it vs the fd kit
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Old Feb 6, 2015 | 11:18 PM
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I run 350z brembo rotors front and rear on one of the earliest versions of Frijolee's Mandeville setup.

The rear rotors (or hat if you're running 2pc units) need to be machined on the inner surface of the hat where the brembo ebrake contacts to clear the hub. You can choose to do this or machine the hub as mentioned earlier.

A hub centric spacer would have to be pressed into the rotor bore to match the FC hub

The stock FC rear calipers can be ground down on the corners and widened to clear the thicker rotors, and a simple relocation bracket can be made to space the caliper out radially.
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Old Feb 7, 2015 | 07:44 AM
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1" difference between the standard FD and RZ, key is with the 16" version you have many more rotor choices. Like I said as far as I know there are only 2 RZ rotor sources
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Old Feb 15, 2015 | 05:32 AM
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This is what need to be done to get the 93-95 rotors to fit with the super now kit:

Fc rear hub is to big for fd rotor, needs to be machined or grinded down:

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The rear aluminium hub and brake shield needs to be modified to make room for the adapter:

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And here are the fitment with the fd rotor and the fc brake shields, fits like a charm:

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And the hub rings is to center the fd rotor on the fc as the id on the fc and fd rotor is not the same. Also i belive the fd rotor is 4mm thinner, so you would have to calculate that into your wheel offset.
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Old Feb 18, 2015 | 06:10 AM
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wow this is some excellent information and pictures and clears up all my questions. thanks so much. internet points for you.

do you have any shots of the fc rotor next to the fd 93-95 rotor? did you notice any difference in braking with the kit?
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Old Feb 18, 2015 | 07:54 AM
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its much more pronounced when you see it in person versus the photos, those are also 18" wheels. With 17" they almost fill the wheel
With standard FD rotors it puts the disk as large as the dust shield
if having a spare is important to you source out a RX8 spare it fits where the spare is normally stored


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Old Feb 18, 2015 | 11:21 AM
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Can't say I noticed any difference in braking as I swapped out the rear tires for 20mm wider than the front tires at the same time. In theory the extra leverage gained by placing the caliper further away from the wheel center would make the rear brakes more agressive compared to running the stock setup.
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Old Feb 18, 2015 | 03:08 PM
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Wait you did fd front rotors, too?
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Old Feb 18, 2015 | 03:36 PM
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Originally Posted by Efinity
Wait you did fd front rotors, too?
Ronin kit up front FC Mandeville Brakes

uses rotors from a "brembo equipped" 350Z which are 2" larger than stock
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Old Feb 18, 2015 | 08:36 PM
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Damn I gotta step up my game
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Old Feb 18, 2015 | 09:06 PM
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Originally Posted by Efinity
Damn I gotta step up my game
If you want to see the Ronin front brake kit me know. I don't think I'm very far from you. The Ronin guys are local to OC.

The kit works very well on the track. I am using it with stock rear brakes at the moment, but want to run slightly larger rear rotors for a little more durability. FD or Cobra rear rotors are all you really need in the back.

I run a wilwood prop valve to dial in the brake bias.
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Old Feb 19, 2015 | 06:55 AM
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Originally Posted by LargeOrangeFont
I run a wilwood prop valve to dial in the brake bias.
This.
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