What are some advantages of having a heavier flywheel? I once thought it would keep the bike from dying right off the get go, but after uncorking, rejet and unpluging grey wire it runs great and can take off without gunning it. This might be one of those fine tunnig things I know nothing about and can hardly feel the diff. I see all these mods, some major and ask myself why? :confused:The bike is like a rocket already. But this does come from someone who rode a XL125, after that anything seems like a rocket.