I have 1990 Zx10 ,havnot ridden about 4 years.this bike has been almost bulletproof,5 years of nitrous abuse& still uses virtually no oil beetween changes,which by the way is every 4000 miles or so.I purchased a 2000 zx11 7 yrs ago& it has nearly 40;000 miles & not 1 problem accept for premature rear tire wear. O yeah did I mention my zx10 has over 100,000 tics on it. Love my kawis.