I soft seized my 65cc metra and bought a replacement piston. I think when I cleaned up the cylinder, I actually made it a little bit bigger. I have the 43.5 mm piston now and saw from the metra kit site they have 45.7 and 45.9 etc..., So I have a couple of questions.
1.) How do you know what size piston you need?
2.) I see the parts on the site, but where do i get them?
Thanks you guys are always helpful!