Hi,

I working on getting Alcon calipers work on my Jaguar XKR (not as simple as expected - bought them used and now I'm struggling with changing pistons, seals etc.). But hopefully I will be ready with that in the end of January. I have recently asked about OEM producer of Alcon discs, but I'm about to go other way. I start thinking about a set of custom-made, light-weight 2-pieces, floating rotors.
I have found a company in Poland which is into a high precision metallurgy and they work with high performance motorsport cars. They produce entire (except pads as far as I know), bespoke braking systems - end to end (calipers, rotors, bells etc.). They also produce adapters for retrofitting existing calipers to other cars. Below an example of custom-made 2-piece rotors for Audi RS6 (400x38 & 355x22). Why this example - as they are the closest to the set I'm looking for. But they can produce any set - also a full set of rotors and bells for our cars.
And now what is it all about? I would need to order min. 3 complete sets to make it happen (400x36mm front and 350x28mm rear) as that is their absolutely minimum output (they usually require 5 sets as a minimal order).

How much is it?
For a very high quality 2-piece, floating rotors they asked:

• around 1700 USD for front rotors (set, 2 pcs) (spare set of rotors 800 USD for 2 pcs)
• around 1200 USD for rear rotors (set, 2 pcs) (also 800 USD for a spare set of rotors)

So ~3000 USD (plus shipping) and you have a full set of 2-piece floating rotors (4 discs). Welcome to the Polish reality - it is a bargain (that's less than 2 rotors from Wortec). If anyone wants to know exact metal that will be used - I can ask for a spec, I don't know, have not asked - I believe that they know what they are doing.

I'm looking for min. 2 people (ideally in Europe, but let's not consider it as a must have, but logistics would be cheaper and lack of customs) who are give that option a try
On purpose I'm not adding a name of a company - I'm not their salesman, but if you want to see their website - let me know on PM, will send a link. I got their calculation in Polish currency and I rounded a value up to hundreds to minimize currency exchange rates issues, but I'm not doing it to earn any money.

I wasn't thinking about fancy Wortec-like "sun"/blade shape. But if there will be a need of it - I can ask. That may increase a price, but it should be doable.

Any thoughts? Anyone interested?

PS. I know - brakes and tires are two most important elements of a car. I'm not talking to guys who used to CNC spikes and now they are about to make the first time ever brake rotor. Comments about no experience in this particular type of rotors are probably pointless. I see no major difference in rotors for RS6 vs XKR (beside the first are 2mm thicker on the front). I will provide my set of current discs (slightly used) to make measurement to prepare bells and rotors.

 

Just my opinion... but those look terrible.

And i'm Polish!

 

Can you elaborate more on an esthetic subject? How to distinguish nice vs terrible brake rotors?

 

Are you tracking the car ?? The standard rotors/calipers should provide yourself more then enough.stopping power on the street

 

I will do as of next season, but definitely it's more of a street car.

PS. Alcon conversion is out of a question in my case. Already invested a lot and it will happen.

 

They just seem very plain, the rivets/bolts are not flush, no real exciting pattern or shape to them.

Like I said, just my opinion - if you like them then that's all that matters!

 

I hear you. That sort of things can be easily arranged and agreed. They would be bespoke.

 

I went for Wortec discs, which save me I think 45lbs in unsprung over standard discs, how much lighter are yours going to be Tmich?

https://www.jaguarforums.com/forum/x...rdered-209477/

Post 20 onwards has pics of them...and they ARE IM(less than H)O V sexy

£2200 GBP which equates to $2750 and that was fully fitted

 

Three thoughts:
When I asked wortec about 380 & 376mm set (standard xkr) a few months back they quoted me much higher (around 3000gbp incl vat and shipping).
Bear in mind that Alcon set will rather be a bit more costly due to a bigger front rotor.

I agree that sun cut of wortec looks very good and it helps with weight reduction. However I'm sceptic when it comes to a track performance. There is a smaller thermal capacity and when you push really hard on the track it will behave worse (temp of a rotor will be higher) vs simple round shape.

Alcon set does not have a weight issue. Two pieces rotors are only to help with thermal efficiency. Weight will be probably roughly the same (a bigger meal of a driver will make a greater impact )

 

Did you try Tom Lenthal? I believe a pair of AP Racing 2-piece were around 1K sterling.

 

I didn't. But I will try in this case...

 

The un-sprung weight savings between standard rotor (approx 40 lbs each) and 2-piece (approx 15 lbs) is significant. I spoke with 3 well known custom motorsports rotor fabricators here in the States a few years ago and they were willing to do one-offs for around $500 for the bell and $500 for the disc which worked out to be about the same prices as Spires' AP Racing replacements. Lenthal's price was half that.

 

Weight saving you are referring to is versus a standard ATE set, correct?

 

No, the 400mmx36mm crescent grooved rotors.

 

Hm, they are not 40lbs each
Or the one which I bought are just a light weight copy

 

I weighed one of my Centric-Alcon 400mm front rotors. It's 33.3 lbs.

 

Thanks for that, my fronts (as per my thresd previously linked) were 21.7lbs on 380mm, I can't imagine that the extra 20mm would add more than 2-3lbs?

As to the cost, as mine were the first (and to my knowledge only) fitted to an x150 I got a healthy discount, but am sure wortec would be open to group offers of 10+ sets.

For that price not only did my Indy fit the new rotors but also:

1) cleaned up & machine polished my suspension
2) changed my.brake fluid
3) fitted my supplied ebs reds
4) Applied my supplied caliper decals
5) Applied lacquer to uprights and calipers

So was chuffed at the price tbh

 

Machine polished your suspension ? Please tell me

 

Visible in post 24 of the link I posted above, so they used a wire wheel to remove the pitting on the front upright, rubbed down with wet n dry, applied metal polish and used a buffer finall put a metal protector (bilt hamber atom-mac before lacquer over the top.

Appreciate it was for a photo shoot as the 1sr time on an X150, so they wanted everyrhing sparkly :

I didn't object.