I had an 01 RC51 for several years. Very strong bike. Engine is bullet proof on those bike and they are know to last. Ther really are not any known issues. You should know that alot of guys that are sport bike riders don't like the Rc51. The V-twin is completely different than any other sportbike. Pick up is not as quick but the torque is amazing and up over 7k on the revs the thing is like nirvana on wheels. I loved mine. Good luck.
Check for radiator damage. They are susceptible to that from minor tipovers. Other than that they are one of the most solid bikes ever built. You can't break the motors.
I have an '00 RC51. The '00 and '01 are the same model, the SP1. In '02 they improved it with the SP2. It's not my daily rider so the mileage is low at about 24,000, but the only problem I've had with it is the bank angle sensor failed when it was a few weeks old. Other than that, just normal maintenance. As slammp said, not a lot of people like the RC51, but I love mine. It has gobs of torque and is fun to ride but can get uncomfortable if you put on a few hundred miles in a day. But since you have to gas up around 100-125 miles anyway that's not a big problem.
They are quite uncomfortable
terrible gas mileage
slow and heavy
I love mine
cliffs on the RC:
-everyone hates them and they suck
-most everyone who sells theirs regrets it
character, etc
Rock solid bike. Honda reliability. A bit of a pain to work on the engine due to the side radiators. But with 16k mile valve intervals who cares? Gorgeous sounding engine. 02 and later is deff worth the few extra pennies for more power and better suspension. Anyone who hates an RC has never had one and/or has no soul.
someone has to much money
Dude. People run faster than that... LOL. Come on, trade in the plastic nuts for some real ones and get a sportsbikebut I can't get past 20mph,