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hellllo so i have a stock 125cc lifan engine on my pitbike. i want a little more power out of it because im making it a little stunt bike to play around with. i heard that theres this thing call big bore kit, which increases the cc making the engine have a bit more power. Could this damage my...

I bought it new, from powersportsmax down in Cali. I made sure to go through the brake in period so the engine would not be damage. I will spray some wd40 into it, so any bad fuel gets blown through. I think your right about an air leak, so if it continues I will buy a new carb and a new air...

Hey guys, I'm new to this site. Since I bought my pitbike 7 months ago I have had to run it with the choke on, all the time. I tried to adjust the carburetor with the choke off. But it just turns off. If I keep revving the engine it won't turn off. Also when I get to third/fourth gear it sounds...