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88 kit help!

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Im new to everything when it comes to dirtbikes so cut me some slack. I just bought a 06CRF 50 with an TB88 kit on it. Still has the stock head and i believe the stock carb. I have a big problem though. It has a real peppy low end that picks up like nothing. The top end is horrible though. My buddys stock 50 is faster than mine. What could be wrong with it and what do i have to change to get this top end cruisin where it should be. Once again i apologize for my lack of knowledge of dirtbikes i just want to get my bike running like it should.

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The reason it's so powerful in the low RPM's is because that is where it's most efficient. The smaller carb doesn't flow as good as a larger one when it gets up in the revs. This makes the engine not get the air and fuel it needs. A larger carburetor will allow more airflow and not make the motor fall on its face when you get up in the revs. Try the TB 20mm carb kit for the stock head.

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even better, get the race head for that kit. You will blow him away!

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