He spent his rookie season on injured reserve due to a torn labrum,[3] and was cut during the 2014 preseason.[4] Kimbrough then went on to work for NASCAR, graduating through their Drive for Diversity crew development program in 2016.[5] He currently works as a front tire carrier of the No. 99 team driven by Daniel Suárez in the NASCAR Cup Series.[6] He previously worked with the No. 1 team driven by Kurt Busch.[7]