Which Spark Plug

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tdr70

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Went out for a ride today and bike wouldn't start. Had started at home before loading onto the trailer. Removed the plug from my daughters bike and put into mine,. To cut a long story short the plug had died (lucky I had a old spare in the spares box).

What is the best brand and part number to run in a xy140 and a lifan125?
 
lifan 125 is a NGK CR7HSA youll pick one up from your local dirtbike store for $5 and not sure abotu YX140 might run the same plug
 
yeah the CR7HSA are used on most pit bike engines although i think the YX motors (above YX140) use a different plug....
 

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