yamahaybr

i think i saw it her: http://ybrfreun.de/blog/x_fish/Shin-Yo-LED-Rücklicht--100408/

Hello all, I want to give my ybr yamaha a little bit more topspeed, is that possible with a K&N or other filter? The ybr does 55mph i want it to go 60mph. I just gave it a new maintenance with fresh Castrol juice and iridium sparkplug. I did also the valvejob and placed a new airfilter (original one from Yamaha) the reason why i want a little more topspeed is because it is now very dangerous with the trucks. Thanks in advance