Ok, so I love high revving engines, and I've heard that people had hayabusas revving to 12,000+ rpms!?!? What kind of work would I need done to make my busa rev higher and make power higher without destroying my motor? Companies like Carpenter Racing offer packages (like their 290 hp package Carpenter Racing) that raise the rpm limit by a decent amount and even gaining power a little higher in the rpms. How do they do this? I will be purchasing a Hartley v8 (the famous hayabusa v8) and although 10,500 rpms on the motor is incredible, It would be even cooler to rev a little higher. <To help me with my formula 1 fantasies on track day > Also, how the hell does my friends track bike rev to 17,000 rpms? I would love some input on how easy this would be to do! Thanks!