Posted June 6, 201113 yr Hi guys I need help, I have just changed my chain and sprockets on my dragstar 125 ,but now when it gets past 30 mph it starts to make a whirring noise , I also switched to a 520 kit
June 6, 201113 yr Hi guys I need help, I have just changed my chain and sprockets on my dragstar 125 ,but now when it gets past 30 mph it starts to make a whirring noise , I also switched to a 520 kit loosen the chain you need about 2 inch of play in it. any more and its too loose any less and its going to whine.
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