Hi all so I have a couple questions about my bike just want to make sure things are alright so for my first question is the bikes top end is 30 mph is that all they have or should it be faster second where I am it’s cold out now when I start the bike it won’t go above 10 mph with alittle backfire and as it gets warmer it gets faster until it completely warmed up then it will do 30 mph without any backfires or issues at all now I should mention the muffler is rotten and and needs to be replaced the top end is new and the carb is new as well

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