Hey you guys, we've had some questions about making these. We've had prototypes kicking around for quite some time but never thought there would actually be enough interest to produce these with the small amount of 99-Spec FD brake kits out there.

These 2 piece rotors ONLY WORK with 99-Spec RZ Front, and or rear brakes. We ended up recycling the project into a vented rear S2K setup, but we've got stacks of the rear rotor rings on the way for the S2K setup.... all we need to do is have the machine shop run off the rear hats. The fronts are relatively straight forward but slightly more expensive to produce.

The issue with making these comes down to cost and demand. Retail on the rears would be roughly $800 and $950 fronts.

If anyone out there wants to see this made, let us know. Some examples of parts are below. These are 314x32mm front and 314x20mm rear. These are DIRECTIONAL curved vane rotors which move MUCH more air than the OEM straight vane rotors, and are significantly lighter. The biggest advantage is the rings should be under 300 a pair to replace, which makes it MUCH more economical than shipping OEM blanks from Japan, not to mention the much better performance and weight reduction vs stock.


Our S2K kit running the same rear rotor (314x20) as the RZ FD!



Example of our current competition rear... we can offer the front and rear rotors with, and without slots.

 

I would be interested in a complete set. Hope the price goes down a little.

Jehan

 

Im up for it too

 

Inhabe RS brakes on mine so should fit as well. Interested!

 

^yep RS as well

 

SB

Anything ever come of this? Debating between replacing the 99spec rotors front/rear vs going with a big brake kit...

 

I'm very interested.

Any updates on the current status or how many orders you'd need to make it worthwhile?

Cheers,

Demia

 

Nope, not enough interest to produce anything.

We do have our 330x20mm competition rear brakes which is a relocation bracket with the stock rear calipers and an even larger rotor than the 99 spec. Basically renders the 99 spec obsolete... which is probably why we haven't had much interest in the 99 rotors.

SBG Competition Rear Brake System (FD3S RX-7) - SakeBomb Garage LLC

 

Curses, I guess I'll be getting them from project mu instead.

 

Hi All,

Wanted to revive this thread. Working with Heath on a potential set of 314 rotors for the rear. The 330s are too big for my 3 pieces wheels given how deep the lip is. I did quite a bit of research, and a solution would be to get a 99 Spec carrier bracket, keep the existing caliper and get a set of Sake Bomb Garage rear rotors (99 spec), but we need some interest to get this rolling. I think this would be the perfect solution for anyone that can't fit the bbk. You could go with the RZ front calipers and rear carrier bracket and run the 99 spec brakes. With enough interest, Heath will do a production run. Heath, can you let us know how many you need to get it started?

 

Here. 2 piece rears, under $500 for the set.

https://www.rhdjapan.com/project-mu-...rear-fd3s.html

Autoexe and a few others already offer these as well

 

as very well explained by mr2peak, this is already offered from mazda with the OEM RS bracket and your choice of the JDM rotors. you have a few options for the rotors. SCR-PRO SCR-GT, endless models, Autoexe and some others.
why reinvent the wheel ?

if an actual 4 piston caliper is offered for the rear with ebrake capabilities, thats a different story

 

All valid points and I have explored all those options. Here is my opinion:

1. If you want to go with a Wilwood front BBK with the J-Hook front rotor, there is nothing to match in the back. To some people that is important, to some it may not be.
2. Parts are slowly starting to go away for this car so we cannot rely on Mazda parts in perpetuity.
3. Have to order from Japan. In my experience this can be a logistical nightmare. I have looked on RHDJapan, and various other suppliers, the descriptions and detail on the parts are very minimal. I am very weary to order any parts unless I am 100% sure they will fit and I will have the customer service and support for any issues. Heath have been fantastic to work with. I have a feeling trying to get a hold of someone in Japan with questions might be challenging.
4. Shipping times/Return costs and challenges
5. Support local small business

If the above do not apply to you, I completely understand. For those that have the above opinion, I am just seeking to see if there is any interest as Heath is will to do a production run if we get enough people.

 

The scr-gt are actually incredibly light so it helps with the shipping significantly.

not exactly sure what your concern is for oem brackets and oem sized rotors. I have that on my car and the fitment, as expected, is spot on.

 

I've spent significant money with RHDJapan, received everything I ordered and their customer service is good. They have a message system set up once you sign in, and they are quite responsive. The exchange rate for the Yen is also excellent for those of us with US dollars at the moment.

I've also had great interaction with Sakebomb. Wouldn't hesitate to order from either company. I 100% understand why you'd want to support local businesses.


Serious question though: if you're worried about future availability, why are you trying to use a product that hasn't seen enough interest to be made in the 7 years since it's been an idea?

 

Why in the name of several gods cant they make this stuff in just plain simple satin black??? x) Why the orange, teal and all kinds of colors except black

 

HAHA never mind, found them in black thats going on my "to buy" list now

 

Spporting this! Have used RHD for aftermarket and Amayama.com for OEM parts for my entire FD ownership, and spent tens of thousands of dollars there over the years. Not a signle problem at all ever.
For Sakebomb i also have just good things to say, im not in the tens yet, but i have spent over 5k there over there years, also without issues.

 

Wildwood makes a bunch of mechanical calipers for exactly this reason. You'll need a mount, but that shouldn't be too much trouble. Could even do a Camden style brake disc right on the drive shaft, mount the caliper on the PPF. Fine for parking, if you wanna slide you'll need a proper hydro setup anyway. It would open you up to any sort of brake type you want in the rear, and no extra unsprung weight, just a little extra rotational weight on the drive shaft. You'd only need a super thin light disc, just to hold to the while parked so it wouldn't add much at all done properly.

 

This we are working on currently

 

Nice.

 

Yeah we've wanted to put together replcement rotors for the RZ/RS/Spirit R rotors for years now (if only for personal use here at the shop) but we just never got the critical mass needed to actually get a production run going. There are not many of these brake kits here in the states, and we sell a TON of our SakeBomb Engineered 325x32 AP and Wilwood kits for the front, and our Competition Rear BBK (330x20 rear directional curved vane rotor with relocation bracket, which adapts the stock 93+ caliper to our larger rotor with a relocation bracket).

Since brakes are heavy and expensive to ship they don't work well as an international product to Australia and Japan, so it's just been an extremely limited use case, which is (we think) why this never took off. We actually make a 314x20mm disc that we use for the S2000 (an RX8 vented Ebrake relocation kit for the s2k) which we keep in stock... for the rear we'd just need a new hat, for the front we need to make a new hat and rotor. We need critical mass (even a small one) to produce products, if we can get it to materialize we're happy to make the RS/RZ/Spirit rotor replacments.

-SBG

 

AP makes a 315x32 10 bolt front rotor, you'd only need to make hats for a complete '99 rotor setup