Posted June 10, 200916 yr I have recently changed an engine from a yba 125 to a ybr engine,, its fits perfect apart from the electrics from the engine to the cdi unit,, there are 5 the wires coming from the engine,, but the cdi unit from the bike has 8 wires,, would it be as simple as changing the cdi unit for one from a ybr ???
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