One bike can't do all that, or if it can it'll be massively compromised for most types of riding. Just get a steel frame built with discs and big tyre clearances and a various mounts brazed on. If you want it to be track legal then you're going to have to carry around track wheels + new handlebars and cranks as well, hardly going to be that portable.
One bike can't do all that, or if it can it'll be massively compromised for most types of riding. Just get a steel frame built with discs and big tyre clearances and a various mounts brazed on. If you want it to be track legal then you're going to have to carry around track wheels + new handlebars and cranks as well, hardly going to be that portable.