Boom is not curved. How rigid is it? On a Cruzbike, if you adjust the boom length, you change the angle of the boom relative to the forks. That cannot happen in this case. You cannot put different handlebars on, either. On my Silvio, I am still trying to work out how to get the bar ends closer to me and the clamp further away. Impossible on this Italian job. They could have done that blue part better. It could have the handlebars coming out of a really short straight section, like a Y shape. There would be less metal in that.