The core of this bike is a 2004 Harley-Davidson XL1200 Sportster, but Rossi has modified the tank—now set lower and further back—and shortened the rear subframe. Large-diameter Fat Boy forks have been grafted on, and the tires are now Firestone scrambler-style rubber, 19” at the front and 16” at the back.
Read more: http://www.bikeexif.com/harley-davidson-sportster-1200-custom#ixzz1tuLzNwXa