Hey Decklin, Welcome to the board. If you've been reading some of the posts here then you know that the Busa is a fairly good step away from the Harley, so I gotta put on my Net Nanny hat here for a minute and just have to say a few things.
1.This is your first sportbike, as such there is a whole lot to learn, about the only thing it has in common with your Harley is two wheels and you balance it to ride. Honestly, it really is that different.
2. The Bike will come with an owners manual, I know I know I hate reading the instructions as well, but in this case study that thing closely as soon as you get home. The break in period is keep it below 5K RPM for the first 600 miles (I think) then 8K till 1000 miles. However, there is a school of thought out there that says break it in like you plan on riding it. So if your going to be rompin on it, warm her up, take her out to your favorite empty stretch and take her to redline up through 3rd gear or so. Careful, you'll be going about 130 or so. Stop let her cool off completely, then do it again. Then even if you only have all of about 20-30 miles on her CHANGE THAT OIL. Load her up with some premium Dino Motorcycle oil 10W40. Then Ride away man, take her in for her 600 mile service (Let the Dealer do it for warranty reasons) then after about 2000 miles I recommend a premium full synthetic (I like Silkolene Pro-4). The other camp says break her in per owners manual... Choose your poison. The most critical thing for your Busa's health is do not lug the motor and do not sit at a steady RPM for any amount of time during break in, you want that thing under load, speed up-slow down-shift up-shift down, just do not lug it. The Japanese inline 4's need to be reved for healths sake, so do not be afraid of that redline, the limiter will cut in well before any damage is done.
3. Watch your speed, the Busa is amazingly deceptive, you'll find yourself whistling along at 80 in a 45 so easy...
4. Give your green tires some time to get scrubbed in, remember that the release compound on them is a bitch.
5. The rear brake shouldn't be forgotten BUT all of your real stopping power is going to come from your fronts. Sportbikes, including the Busa have a pretty good front end weight bias so under hard braking that rear will lock in a hurry, the front is the key to survival.
6. The clutch is going to be loud, especially in Neutral, and you are going to hit a false neutral between 5th and 6th gear a few times especially before your 600 mile service, then it just clears up for the most part. (No one knows why)
7. Finally Take your time to get to know how the bike feels, it's a sweet freakin ride and is a pretty tame machine under about 5K RPM, above that it's just an animal all the way to 186 or so... But take your time.
Oh and in case no one else mentions it here I tend to freakin rattle on like a freakin grandmother, no offense man I am not implying you do not know how to ride, but as a first sportbike you got yourself the Baddest assed mutha on the block, remember that.
Rev