Listed below are the single-digit earned Pro Kart Challenge race numbers for the 2017 season for the 1st thru 9th place champs from 2016. The use of a single digit number is optional for the ProKart Challenge champs (but mandatory for the Pro Tour 1st thru 3rd place champs). If the PKC driver that earned the number does not use it, it will remain unused for the balance of the season. Please also note that you must run your assigned letter designator (lower case alpha character after the number), whether you race with your single-digit number or other approved race number.
