The Gould GR61X is a further evolution of the Gould line of hillclimb cars. It was produced around the same time as the GR55B as a one-off design produced for father and son duo Roger and Scott Moran. It sees further refinements to the aerodynamics as well as offering enhanced lateral head protection from its higher cockpit sides and padded cockpit surround. It utilises the same 3.5-litre Nicholson-McLaren V8 engine as Martin Groves' GR55B. The car was instantly competitive when it hit the hills in 2005 and ultimately culminated in Scott Moran clinching back-to-back titles in 2008 and 2009 with further titles taken in 2011, 2013, 2014 & 2016 which make Roger and Scott Moran the first father and son title winners in British Hillclimbing as Roger claimed Pilbeam's final British title in 1997. After Roger retired from top-flight hillclimbing at the end of the 2014 season Alex Summers added to the success of this chassis, winning the 2015 title driving the car alongside Scott Moran. The GR61X was the first Gould chassis to be fitted with F1-style paddle shift sequential gears and traction control, which have since been fitted to GR55 chassis (Rob Turnbull and John Bradburn's GR55's were the first to have paddle shift fitted - the Geartronics system) as well as the Pilbeam M97.
