Riley Technologies was the leading constructor of the Daytona Prototype chassis for the Grand-Am Rolex Sports Car Series.

[3] Riley developed the Mazda RX-8 chassis for SpeedSource, that won the GT class in the 2008 race.

In 2012, the SRT Viper debuted at the American Le Mans Series GT class, with drivers Dominik Farnbacher, Marc Goossens, Ryan Hunter-Reay, Tommy Kendall, Jonathan Bomarito and Kuno Wittmer.

The car made its debut at the Le Mans 24 Hours in 2013, where it finished eighth in class and 24th overall.

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.

Riley had Lawson Aschenbach and Gar Robinson as drivers of their single Mercedes-AMG GT for the 2020 IMSA WeatherTech Championship, resulting 7th in the GTD class overall standings.

A derivative of the Riley Daytona Prototype chassis is also raced in the GT300 class of SuperGT as the Mooncraft Shiden.

Riley Technologies built the Chevrolet Camaro GS.R that competed in the Continental Tire Sports Car Challenge in the early 2010s.

In 2019, Riley entered the IMSA Michelin Pilot Challenge with a Mercedes-AMG GT4 with drivers Jim Cox and Dylan Murry, finishing 6th in points.