I am gonna be buying a Yamaha Blaster in the next 30 days and i have a question about the transmission or any other forewheeler, can you do this to..??

The blaster has six gears, 1-N-2-3-4-5-6, If you wanted to, can you add a 7th gear?? Thanx!

 

Yes and no....One can't simply "add" a gear. But one can always break apart a transmission and regear it to 7 gears if you wished. You're looking a MAJOR BUCKS to do something like that.