More Top End

Yamaha 350 Warrior 1987.. SHe is in Great Shape..I mean it looks Practically Brand New But On a Flat Track it Losses a bit Push when I am wound out...

I changed the Spark Plugs Air Filter Sprayed the Carb..

Any How To's on Picking up the Horses... Greatly Appreciated

Thanks

what engine mods if any do you have?

FST makes a 446 big bore stroker

You can also get a high-compression big bore with cam. 366cc