Hello all,

I have a 2002 Honda CBR 600 F4i that tops out at exactly 180km/h.
THe bike is a Japan Import so it must have some factory restriction.
Anyone knows where the restriction is and how can I remove it ?

THank you all in advance

 

Whoa I hope so thats pretty low. Of course your gonna get people to say why do you need to go faster .................................... But I hope someone comes with an answer for you. Maybe change the cpu to an American one ?????

 

When you are topped out at 180 what rpm are you at? Does the rpm keep cutting out or just sit steady? Could potentially be a huge stunting sprocket on the back or something.

 

No, Japan's vehicles are all limited like that. Cars and bikes. You may have to swap not only the 'ECU', but the gauge cluster as well.

 

well that sucks, I always thought only America got all the detuned goods (cars).

 

When I reach the 180km/h nothing feels like cutting out, it justs stalls there .
No Engine choking or other erratic bahaviour on the.
I need to know what I need to replace exactly before purchasing an ECU and/or Gauge .
Was going to purchase a Powercommander v3 but some people told me it will not remove the restriction . Other options i found where the Niko G Pack . Does it work ??? http://cgi.ebay.co.uk/ws/eBayISAPI.d...=STRK:MEWAX:IT

 

I have a Japanese imported bike and mine is also restricted. I have asked and no viable solution exists to work around the restriction. Its fustrating when the right hand wants more and the bike will not rev past 180kph. However, I have learned to appreciate the limit, as I definitely..no, absolutely would take it further if I had the option. The speed limit is 110kph here so 180kph means your flying passed traffic without the really high speed potential 'problems'...
So, I would recommend you enjoy it, unless you live somewhere where the roads permit higher speeds or track day the bike...and if you did, then I would sell it for an unrestricted model or another bike.

 

Yah my 97 Japanese spec cbr f3 does the same thing. I just picked up some 'US' gauges and CDI to find out if replacing them removes the restriction.

I'll let you know once I replace them and test the bike >

 

I've heard of some people bypassing the speed restrictions by purchasing a Speedohealer. Some ECU's go off the speedometer to tell whether or not it should stop accelerating. The speedohealer will "trick" the ECU into showing a different speed, and you can make it say a lot slower than actual.

 

funny, I thought all our bikes were imported for Japan lol