Just bought a 99 F4 with 58k on it for $1600 and it starts up on the first try .No issues with it turning over and runs as if thier was only 15k on it. It needs some minor body work but no problem with the motor and I checked out the carbs yesterday and thier as clean as can be.

 

Just picked up a 2000 f4 with 37,000 miles on her 2 weeks ago. Spark plug was blown out of cylinder head (stripped threads). Got it for $800, fixed it myself and it runs like a new bike. Also changed sprockets and chain and still need to do brake pads.

 

got a 99 900rr with 40,000 miles on it still runs great. gotta do the sync,valves, jet kit and timing adv. this winter i figure i should do it while he has it apart.