Attendees to the 2025 Triumph Rocket 3 Storm R & GT launch in Cannes, France were gifted with a piston from the motorcycle’s 2.5-liter engine. Measuring more than 4.25 inches across and weighing ...

The project started in 2014 and was produced by Triumph Motorcycles' North American branch. The Castrol Rocket 3's twin engines were designed by Bob Carpenter of Carpenter Racing in coordination ...