But you could also argue that going a bit bigger from the start, with a 650 or something in that ballpark, would give the rider something to grow into and add longevity to the initial investment. Take the Kawasaki Ninja 400, for instance, an estimated 366-pound bike priced at five grand (new), against the Yamaha MT-07, which is $2,600 more expensive but weighs just 37 pounds more. You get more than twice the engine in the MT compared to the Ninja and aren’t having to muscle a bike around that’s 100 to 150 pounds heavier.