02-19-2010, 03:19 AM
I have a 88 cc kit on my CRF50 and that was the first thing I put back to stock. You can tune the exhaust by putting washers between the pipe and the spark arrester. Look back earlier in this thread at my post about super trap exhaust and basically it's the same principle. To lean the carb out add more washers. To richen it up take them out. If your still having trouble understanding this I will take some pictures and post them.
Stock exhaust = less trouble with po pos
Stock exhaust = less trouble with po pos



