I thought the only real difference between an '03 and say an '04+ xb9r was a wider belt. Nothing changed as far as physical dimensions or stuff, such as a drivetrain, changed. If that baker is for real wouldn't it fit in an 04+?
all stock xb12 and 9 genereraly ~140 dependent on rider weight, but I believe that is because you are up against the rev limiter, you could get a little more, but you are flirting with motor damage
You have to have a "trap door" for it to fit. None of the xb's ever came with the sportster style trap door. The xbrr had one but it was a different style of door.
Matt