today a new zx10 (500kms)blew one of the hoses to the radiator,and ended up all over the whole side of the bike ,luckily he didnt crash and got stopped.
heres what i found.
the small hose under the rad cap,the lowest one which constantly has fluid flowin in it had split about a inch down the line.very odd for a new bike so i removed at and recut it and is set to go.
while pushing it on i found it difficult to get back on and it was really stretching the line again.needless to say a little disconcerning.
after gettin it up and running i decided to slice the old piece open.take a look at the pic!it was rotten and basically ready to blow on numerous areas.iam guessing either he got a bad batch of hose or its to small for the fitting and the heat and such breaks it down.
Maybe have a peice of mind and check yours.takes only a few minutes.(please do it cold) better safe than sorry.
see pic of the inside