the st1300 incorporates many of the x-wing's lines but none of its running gear. power comes from a lower-slung 1,261 cc v4 engine mounted as a stressed member in a lighter aluminum frame. a major difference from the st1100 is the use of balance shafts for smoothness, allowing the engine to be directly mounted to the frame. the revised engine layout and a split fuel tank shift some of the weight downward, making the st1300 less top-heavy than its predecessor. the rear wheel is driven through a cassette-type five-speed transmission and shaft drive.