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Bike has problems getting past 100mph have had the full speed of 140mph out of it on my long driveway but now since i changed the cams, rocker arms, cam chain and other little things when it get to 100mph the sounds of the engine is different sounds like its topping out. Any ideas ?

have you checked the timing? sprockets may have moved a notch when putting the cam chain back on?

Yeah i thought that but i checked them all a couple of times and when i put the new cam chain and cams is i timed them up witht the marks on the outside parrell with the engine top rotated the engine to take up the chain slack but still no good.

Are your carbs balanced? That can slaughter your engine performance if they arent right. If its lumpy on tickover then they probably need doing.

Might be worth checking the filter, i know my ZXR sounded loads different when a new filter was put in after a service.

it's got a new KnN filter all the carb needles have been checked and balanced the carbs up i think i'm going to have to get it dynoed to check the mixture with KnN

oh i see, hmmm, thats gonna change all sorts. Thought you would need to get it dynod at least to get it all setup properly. Stuff like that isnt going to work right away i wouldnt have thought. Could be its given you alot more midrange at expense of the top end....

the thing is that it had the KnN when i got the bike are it works fine but i did give it a good clean so maybe it was so mucky it didnt need the mixture sorting out lol

lol, i dunno, why touch what aint broke

It is broke above 100 mph and when i'm riding with the gixer 1000 's i need it to get to the 140mph
i need to start going out with a scooter gang lol

No it pisses me off knowing that the bike isnt right and i cant find whats wrong with it.

dont think you need to mess with the carbs if you are just using a k&n replacement element unless you have a race system too?

Standard downpipes and race can