These kits are now in production for the E92 M3!
Our tentative shipping date will be at some point in October.
You will have the choice of either the CP9660 or CP9668 caliper. They will both use the same bracket and will both fit on the same disc. Hypothetically, you could have both calipers, depending on your needs (i.e. if you ran both Sprint and Endurance races and wanted to optimize your setup for each venue). The two different calipers will be interchangeable.
As for discs, below are some comparative pics of the 355x32mm, 72 vane disc in our current kit, and the 372x34, 84 vane disc in the new kits. I also have some final weight numbers from the production parts. The 355mm iron disc weighs 15.35 lbs. without a hat/hardware. The 372mm weighs 19.1 lbs.
Now, here's the best news...the 372mm discs will fit inside 18" wheels! While some manufacturers have gone a little bonkers disc diameters, we've purposefully constrained the disc diameter on these to completely fill out an 18" wheel. We added thickness and vanes to gain thermal capacity, rather than stretching them to a silly diameter.
Below are some pics of our CP9668 fitment template being checked inside an aftermarket 18" wheel from an e92 M3. Again, this template is for the wider CP9668 caliper that takes the 25mm thick pad. Even with the wider caliper there is plenty of clearance on both the wheel spoke and barrel.
