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Discussion Starter · #1 ·
Hi All,

I'm a new member here but I've had my CBR since 2011, when it only had 249cc! It's since been updated to 300 spec and beyond. I enjoy the bike for it's handling and size. I was a member on the 250 site but just discovered this one.

Thanks
 

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Welcome to the 300 forum friend. Did you put one of those big-bore kits on your 250R?
 

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Welcome to our Forum! Hopefully you will enjoy it more than your previous Forum.....great bunch of people here.
 

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Discussion Starter · #4 ·
Welcome to the 300 forum friend. Did you put one of those big-bore kits on your 250R?
I put a 78mm Wiseco in it. It required some modification to get the compression ratio right (it's made for the 250 so the dome height is quite tall) but after some careful beveling it worked out.

I haven't tried the Takagawa kit. I haven't heard good things about it and it doesn't make sense to go that big on the bore when the aribox/head/cams/exhaust can't handle the volume.
 
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