U don't Need a new wire harness if u. Want to use ur kick start, u won't spend more than $100 Fixing u bike, post pics
i would be putting a new engine in...LOL but on n engine, you can bore out the cylinder larger, increasing the cylinders volume and use a bigger piston, or you can stroke it...put a crank with a longer stroke in, thus also increasing the volume of the cylinder (because its making it longer)Ur bike with a 160? I don't get how parts add cc's , I seem this kid had a 160 x18 or 19 on YouTube