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Suggestions for xr50 carb?

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First time poster here. I did search around first, but couldn't find a thread that really related. I'm in the market for a larger carb, but I am not sure what size to go with. The bike runs great right now, but I would like more punch coming out of the corners and off the line.

Here is some background on my xr50.

-BBR 82cc BBK w/ stock using BBR cam

-CDI Rev Box

-DR D exhaust

-WB head breather kit

-Uni Pod filter

I've read and been told that I should stick with a smaller size carb, like a 16mm or 17mm since I have a smaller bore kit. How ever I am looking into having my stock head ported, so should I plan ahead and get a larger carb? Maybe an 18mm? Any suggestions would be greatly appreciated.

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Heres what you need http://www.hondatrailbikes.com/catalog/product_info.php?cPath=45&products_id=374 and you can port your head to match the intake that comes with it, and your bike will run like a raped ape.

Wow! That's a great price on that carb. So you think a 20mm carb won't be over kill on my 82 kit? I've been told that you can lose bottom end with larger carbs.

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If your going to port the head the 20 will be good. But I have a 75 with an 18mm and I am right with the 88's. My friend also has the 75 kit with the 20mm and I crush him as far as bottom end goes. And our top is the same. So just from that, I would say get the 18mm and use the 85 main jet for it.

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