Riley Technologies was the leading constructor of the
Daytona Prototype chassis for the
Grand-Am Rolex Sports Car Series. The Riley chassis was dominant in terms of both numbers of cars on the grid and results. Riley chassis have won seven
24 Hours of Daytona races with different engines, the 2005 race was won by the
SunTrust Racing Pontiac-Riley and 2006, 2007, and 2008 victories went to
Chip Ganassi Racing Lexus-powered Rileys. The 2009 race was won by a Brumos Racing
Porsche-powered Riley. In the 2010 race, another Porsche-powered Mark XI from Action Express Racing won. The 2011 race was again won by Chip Ganassi Racing, this time with a
BMW engine, and in 2015 after the
United SportsCar Championship creation, with a
Ford engine. When the
United SportsCar Championship was created in 2014, Riley continued as Daytona Prototype supplier, with Gen3 rules adopted to make the cars competitive versus the former ALMS LMP2 cars. The company supplied the Ganassi, GAINSCO/Bob Stallings, Shank and Starworks teams. Ganassi became the only full-time team in 2015, and no full-time entry used Riley chassis in 2016. In 2017, Riley became one of the four LMP2 and DPi chassis manufacturers with the
Riley-Multimatic MkXXX. The car was developed in partnership with
Multimatic. Multimatic would take charge over the carbon fiber tub, vehicular bodywork and aerodynamic aspects of the car, whilst Riley would design and manufacture the majority of the mechanical components on the Mk30, including the suspension and assembly of the car. On 15 June 2017, Multimatic revealed that it had taken the lead role in the Riley-Multimatic LMP2 programme, a departure from the initial shared lead, that had Riley leading the commercial aspects of the LMP2 programme, and Multimatic focusing on the DPi aspect of the programme. ==GTLM and GT3==