Tesla kit also includes installation by Tesla Service centerThanks for posting the details. It looks like your RB CCB System Kit (420/410) for Tesla Plaid is $3,000 cheaper and has larger rotors than the Tesla kit.
But the Tesla kit includes a rear caliper (4 piston) instead of reusing the stock caliper (1 piston). That has to account for some of the $3000 difference.Carbon Ceramic Brake System Kit (420/410) for Tesla Plaid & LR Front & Rear (P/N 2R44-K & 2R49-K)
Carbon Ceramic Brake System Kit (420/410) for Tesla Plaid & LR Front & Rear (P/N 2R44-K & 2R49-K)racingbrake.com