This freestyle bike belongs to the author. Notice the seat foam has been cut down to an inch thick. This is done by removing the seat cover and cuting the foam with an electric turkey knife followed by a good sanding with sandpaper. Click Here for instructions on cutting down the foam. Also,  notice the grab bar bolted to the subframe. This is because the kawasakis subframe is much lower than the other japanese bikes, and the only way (for the author) to get a good grab is on the thick bar. The bar is also covered in grip tape for added comfort.