Mercedes-AMG GT3 (C190) '2015–19

In 2017, Riley Technologies competed in the IMSA GTD class with two customer Mercedes-AMG GT GT3s. The #33 of Ben Keating and Jeroen Bleekemolen was runner-up in the teams championship, whereas the #50 of Cooper MacNeil and Gunnar Jeannette was 9th. In 2018, Keating and Bleekemolen drove a single Mercedes-AMG GT for Riley, placing third in points. In 2019, the duo finished 7th in the overall championship, and won the Endurance Cup.