Justin Grant, born November 12, 1990, is a native of lone, California. Grant is a full-time USAC Sprint Car driver. He currently runs the No. 4 for TOPP Motorsports in the USAC AMSOIL Sprint Car National Championhip and the No. 91 for Hemelgarn Racing in the USAC Silver Crown Series.
Grant began his career racing midgets in California, where he was crowned the 2007 Bay Cities Racing Association Midget Champion at only 16 years old. Justin's most successful years came after joining Sam McGhee Motorsports in 2016 where he picked up 18 top-five finishes in 21 races. After joining Hemelgarn Racing for the USAC Silver Crown series, Grant became the first driver in USAC history to win midget and sprint car openers in the same year.
Grant's dominating career has included the 2020 USAC Silver Crown National Championship and the 2022 USAC National Sprint Car Championship.