250cc. Four cylinders. A red line most superbikes can't touch. Which one would you ride to the red line? Tell us in the comments. 👇 Follow One Lung Racing for more machines the world tried to forget. Footage credits for every clip are shown on-screen throughout the video. #CBR250RR #MC22 #250ccFour #JDMMotorcycles #19000RPM #YamahaFZR250 #SuzukiGSXR250 #KawasakiZXR250 #OneLungRacing #MotorcycleHistory