what cylinder is this?

[200x newby]

its for a 1978 cr250r but looks like the exhaust prot is coming out the middle and the head is not what the stock ones look like. my buddy has this. im looking to put it on my 82 250r is this a big bore cylinder?

[SYKO]

its not a hondaline 300 if you want to know, measure the bore it could be a mugen cylinder but I highly dought it, pm big bore he will know what the mugen looks like

edit: went on a looking spree and that is not a mugen top end, the mugen does look similar to the hondaline 300 kit, dont know whatcha got there buddy!

edit: pm firefighter90 he has a hondaline 300kit for sale

[team-red-rider]

thats the cr250R 300R kit!!!

[1upfront]

It's more like a 76 I can just by looking at it, the 78 looked exactly the same as the 81-84 ATC 250r except for the motor mount on the head and also the exhaust on the atc comes right out the center, the cylinder/head you have is earlier than 78.

[SYKO]

thats the cr250R 300R kit!!!

slow your roll kid, no it isnt