Originally Posted by GrantG

Yes if you have Red calipers, you’ll need the spacers front and rear when mounting them to fit over the larger diameter rotors (380mm in front to fit 410mm).

Originally Posted by box986

CMS, do you have any holiday sale this year for your GT3 rotors ?

Originally Posted by Atgani

This can only go two ways :
First, you miss out on a fantastic product because of your concerns over the manufacturer's ability to remain in business, or second, you address those concerns.
How would you do that ? Well you could always give Christian Koenigsegg a ring and see what he thinks of the product and the company that produces the rotors for his cars (and has done for the last ten + years) or you could listen to your fellow Rennlisters who've run them on their track cars.

Or you could do some research on an internet. FWiW, I'm just an early adopter back in 2007 ... (actually I was THE first Porsche adopter when I fitted them to my 996 GT2 back then)

https://www.pistonheads.com/gassing/...8&t=436594&i=0

In those days even ST weren't aware of just how hard and durable their product was, or at least they weren't until a Koenigsegg test driver wore a set of pads out (down to the steel backplates) AND kept on driving the car. When Koenigsegg removed the "scrap" rotors, they intended chucking them in the dumpster, but ST requested them back to inspect and assess the damage wrought by the pad backplates.
Once they received them back, they inspected them and decided they'd re-machine the faces. Having done so they were sent back to Koenigsegg and they continued to use them.

As for the "problem" about what to do when the rotors do go for refurbishment ... plenty of you won't need them refurbished as they'll far outlast your track outings, and as others have said, those that do need to have them refurbished will either have to live without the car for a few weeks (talk about first world problems) or bolt your OE steel/PCCB rotors back on for those few weeks.

Originally Posted by JBurer

Great post!
ST is still in market today, partnered with HCF Brake Systems - https://hcfbrakesystems.com/

Originally Posted by CMS

We sold out from our last promo. We are working with a new supplier to offer a ceramic rotor kit with the same performance as surface Transforms at a significant savings. Stay tuned in 1Q20 for an announcement.
CMS