The Triumph Rocket III is a three cylinder motorcycle made by Triumph Motorcycles Ltd. At 2,294 cc (140.0 cu in) it had the largest displacement engine of any mass production motorcycle, as of September 2010.
The name "Rocket III" is derived from the 1968 BSA motorcycle, the Rocket 3, which was also produced as the "Triumph Trident."
The original model was released in 2004 and has remained in production with only minor modifications other than a change of engine colour from silver to black in 2005. This model was awarded Motorcycle Cruiser magazine's 2004 Bike of the Year, Motorcyclist's 2004 Cruiser of the Year, and Cruising Rider magazine 2005 Bike of the Year. This model is the newest exhibit at the UK National Motorcycle Museum.