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Anything is possible with time and $$$.

But in all seriousness, you'd have a hell of a time getting it in there. I envision slicing off the main tube and custom bending a new dual tube setup.
 

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If i were to spend the time and money to swap motors, i would def throw a 450r motor in there.lol

2004 Honda 919
1978 Triumph Tiger
1989 Honda GL15 ( A work in progress...)
2014 Honda Grom ( Soon to come)
 

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Discussion Starter · #8 ·
why would you? why not just get the 250 and be done with it if you want a bigger bike?
It was just a question. I was just thinking with the lack of mods and the low top end. How long will it be before someone tries something like this? People place larger engines in smaller vehicles often I dont see this bike being any different.
 

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It was just a question. I was just thinking with the lack of mods and the low top end. How long will it be before someone tries something like this? People place larger engines in smaller vehicles often I dont see this bike being any different.
It would be a very difficult swap, as the grom's 125 has a horizontal cylinder, and the cbr250 has a vertical cylinder. The cbr engine is tall vertically, while being short horizontally, while the grom's is long horizontally but short vertically. Think rectangle with the short side down as the cbr motor, rectangle with long side down for the grom.
 

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keep looking why don't ou check that 450 build out. that's a cheaper and easier and faster alternative. changed me from swap hater to swap gonna do er' lol
 

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I already started a thread under the build section. I have been avoiding it as I have a few issues to sort out! Heh heh.....Plenty to think about. Hopefully get some real progress soon as I have a date with a fabricator in two weeks! YEA!
 
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