The overall sporty look is completed by the bikini fairing and vented mudguard, but if we take a better look at the back, the underseat exhaust tends to turn it into a veritable
racing motorcycle, which is what café racers were originally supposed to be. Also, the red/white color scheme was the adequate choice in our opinion.
source : http://www.topspeed.com/motorcycles/motorcycle-news/honda-cb450-caf-racer-shows-how-you-can-make-a-bike-yours-ar80822.html