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Just a quick question, my twins race 125 raptors, one motor is making a lot of top end noise the other is not, they are 2013 and I keep the oil changed and valves adjusted, any other ideas. We need to finish the next two races for points, don't want it to blow. Any ideas greatly appreciated. Thanks Kevin
 

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What kind of noise? Piston, valve tap,does it sound like something is lose? Have you changed anything or are they stock. Is It running lean over heating?
 

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The only time ours ever made noise, it seized the rod bearing the next moto. lol We change the oil after every race now.
 
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