piranha

I just got this piranha 160 slowly putting money in it freshening it up I have know second gear so it kinda sucks but it's still a monster just put fresh plastics on it tonight and new throttle housing if any one could tell me more about it that would be sweet this is my first pit bike

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Ok here we go I'm pretty new at the hole pit bike scene. I have a piranha trl140 and I can't really find much info about it. I'm interested in big bore kits and stroker kits. I'm pretty motor savy just need some direction. Also some questions about cams and sizes . Can anyone help ?