I know there are guys out there that race these little Chinese ATVs. I’m trying to get my sons ATV to run a little better. So far, I’ve changed the oil twice, and upgraded the carb to a 27mm. What other changes have you guys made to get these things running better?

 

I’m going to change the font sprocket to a 10 tooth from the stock 12 to get better bottom end power my kids like hills so I need better bottom