New low price* for CTS-V big rotor kit.
RB Big Rotor Kit (370x34mm) Retrofit to Cadillac CTSV V2/Camaro G5 ZL1 6 Pot Calipers for All Model 3 Front
racingbrake.com
RB was the first but still is the best brake developer for Tesla.
This kit has a proven record of installations (among other retrofit kits we offer) since the introduction of Model 3.
*Pricing is for you to compare other what's available although other associated components is highly recommended for the same successful installations like other M3 owners.