The SHW smooth monobloc rotor for 2017–2020 Porsche Panamera 4 with black calipers (left front, non-ceramic) is a smooth-surface, one-piece rotor that balances consistent pad contact with improved cooling. The manufacturer indicates enhanced thermal behavior to reduce fade, delivering steady stopping for left front fitment on specified Panamera 4 configurations; part 971615301.
SHW 17-20 Porsche Panamera 4 w/Black Caliper w/o Ceramics Left Frt Smooth MB Brake Rotor (971615301)