Calling Corbeau direct should get you what you need. 1-801-255-3737 Monday-Friday 9:00am - 5:00pm MST/Utah time.
I did not see a part # with an "S" like yours? 26402BS
PART NUMBERS:
26401: Black Vinyl
26401W: Black Vinyl Wide
26402B: Black Vinyl/Cloth
26402BW: Black Vinyl/Cloth Wide