I recall a video of a guy running a race on a Ninja 250 with a top case just absolutely spanking everyone.
Edit:
Found it!
I had a ninja 250, that thing cornered like it was on rails. Going up Palomar Mt. wasn't that much fun. Coming back down it was just about untouchable. You'd just go sailing past the bigger bikes when they hit the brakes for the corners.




had that fancy honda lifetime oil in it