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Another brake rotor option

VictorH

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I've been running PFC brake rotors for more than 15 years, mostly on another car and then the past 5 years on my '21 Mustang. I got good life out of them but both the front and rears are due for replacement. Evidently, there's a long story about some of the struggles PFC has had and consequently the supply of replacement rotors has suffered. I and now DerKlink have had to order replacement rotors from PFC in Spain because there is no availability in the US. Also, unfortunately, the replacement rear rotors are now no longer available. Needless to say, the hats are in perfect shape, but given the poor availability of replacements the options are limited. Buy another complete set of another brand or try to find something custom that could work/fit. This is about the custom option.
Also, for those of you who go through rotors maybe you'd like to have another option for replacements from a reputable supplier. Of course if you're happy with what you have then by all means stay put.

Today I dropped off my worn rotor and had a tour of a brake system company called Pro-System, in Mooresville, NC. Web link: https://prosystembrakes.com/products/stock-car/
They supply NASCAR (over 4000 rotors per season), Trans-AM and a number of other race series. They are pretty much motorsports only, no OEM. When you call them they ask what race team you are with, though they do, one off and retail work with people like us as well.
Some other factoids, they source all they brake rotor castings from the UK, as they have found them to have the best metalurgy, world-wide. Previously they all came from Japan for the same reason, but after their big earthquake, that was the end of that factory. They have something like 200 different rotor blanks and patterns for over 2,000 different brake rotors.
They machine and prepare those rotors 100% in-house. Mostly they are supplying race teams of various race series.
Each blank is machined for a given hat and application, they also make the hats if needed, balanced and then each rotor is bedded-in on their brake dyno using some sort of pre-programmed run based on a whole bunch of factors. Evidently this is also to stress-relief the rotor. I asked about cryogenic treatment and was told it's basically just another form of stress relief but only adds a marginal amount of additional brake life to the system.
Anyway, Dennis my sales rep and tour guide was super knowledgeable, been around a long time, knows the other competitors and has worked with just about all of them too. Most of their brake pads are sourced from Japan and the origin of their compounds was for brake systems for the Japanese Bullet trains. I'm hoping to get a nice set of rotors in return and perhaps will use them for my future brake rotor needs for any car I have that might require a really good track use brake system.

Rotor doesn't look too bad but it's DONE (yes, you can feel those grooves)

Some of the inventory at Pro-Systems brakes

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Optimum Performance

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We tried to work with PFC 5-6 years ago, there was not enough Customer interest to make the massive investment required to just make a part that they already made.

We have spoken wirh Pro-Systems several times over the last decade and they showed little interest in this market.

That being said, during this time we have shipped 100's of sets of Girodisc products all over the world. The rotor rings are sourced from a US foundry, the entire product line is made in WA state. They have service parts on the shelf and they offer excellent value. If they make a product its supported.

Also we have 12% off our entire product line this week, which includes Girodisc. In stock and ready to ship.
 
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VictorH

VictorH

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You guys have excellent, high-quality products and I've purchased from you in the past. I'm of the opinion the more options there are the better, but realize, for whatever reason, for the Mustang, on the high-end, race-type brake rotors are limited.
There are literally dozens of two piece brake rotors available for our cars, but the top tier is a bit limited. Girodisc and Essex/AP Racing and maybe Racing Brake, but I'm not familiar with their products. PFC used to be one of those top-tier but they are fading away from this market.

I'm sure some people will argue that there are lots of perfectly suitable options out there, but for those of us who are generating 1.3 - 1.5g on braking lap after lap (VBox confirmed) on our street cars, I'm only going to trust the highest quality rotors, pads and fluid out there. Agree, that Girodisc is one of those products.

Just noticed now that AP Racing has dropped S550 Mustang too!
https://www.essexparts.com/essex-de...etition-j-hook-disc-pair-38034-s550gtpp-front
 
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Optimum Performance

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You guys have excellent, high-quality products and I've purchased from you in the past. I'm of the opinion the more options there are the better, but realize, for whatever reason, for the Mustang, on the high-end, race-type brake rotors are limited.
There are literally dozens of two piece brake rotors available for our cars, but the top tier is a bit limited. Girodisc and Essex/AP Racing and maybe Racing Brake, but I'm not familiar with their products. PFC used to be one of those top-tier but they are fading away from this market.

I'm sure some people will argue that there are lots of perfectly suitable options out there, but for those of us who are generating 1.3 - 1.5g on braking lap after lap (VBox confirmed) on our street cars, I'm only going to trust the highest quality rotors, pads and fluid out there. Agree, that Girodisc is one of those products.

Just noticed now that AP Racing has dropped S550 Mustang too!
https://www.essexparts.com/essex-de...etition-j-hook-disc-pair-38034-s550gtpp-front
Tariffs really disturbed the supply chain for a lot of businesses. Is a Mustang owner going to drop an additional $800 on a set of rotors because 'they might be better' ? That is a couple of tires or some brake pads, gas, hotel, track day entry etc. Value matters.
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