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Rev Box Question

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...newbie here.I did a search but still have a couple of questions.1)Can someone please explain what a rev box does? 2) I have an SSR 140 TX stock motor, (lifan). Would installing one of these make any kind of noticable improvement to how my bike runs? Sorry in advance if this has been beaten to death already. Thanks.

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the cdi or "rev" box is the electronic contoller for you engines spark timing .

honda 50/70 have a rev limiter but china boxes dont

my take is this

we sell Tb rev boxes they are good price ,good units ,they work well but on a china bike its not going to be a vast improvement ,more like covering all the bases

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That clears it all up for me.Thanks for the response and precise info Tbolt.

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One quick ? will that trial bikes box fit a 2004 crf150f ??? It looks like all hondas from 50 to 230f use the same one?? 50, 70, 80, 100, 150, 230??

Thanks

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