I have 63k on my '07 zx14. It is mostly stock now, with the secondary butterflies removed and a PCIII installed. I had some titanium Scorpions on, but put the stock exhaust back on after some unwanted attention. Stealth mode seems to keep me out of trouble. This winter's maintenance saw me doing my first valve adjusting, with three intakes tight. And it is getting some suspension love this year: Traxxion Dynamics AK20 cartridge kit is on its way and I'm on the hunt for an Ohlins shock. Only two more months 'til riding season