I'm running out of ideas, ok so it runs excellent in the yard idle - 10000rpm but try to go down the road and it has power in 1st gear up till abt 3500 rpm and then its a dog and will barely do 50mph

 

Sounds like bike is starving...

Spark/fuel/air....

Spark: check your R/R, spark plugs, spark coil, wires, all connection.

Fuel: check fuel line, fuel pump, fuel regulator, fuel filter...is something disturbing fuel flow

Air: check intake, air filter, all vacuum hose, air ram...is anything out of placed?

So when bike idles find...rev is low...but when you throttle, something is short...so bike bogs...

 

Thanks I will recheck every thing again I did order a new r/ r tested kind of low.

 

10k rpm? or 1k?

 

It runs good sitting in the yard from idle to 10000 but when you ride it has no power at all

 

check the little air induction tubes in front of the bike. make sure they are flowing properly. they look like little deer whistlers is how i'd desribe them. look at the air ducts on the bike. they are right there on the inside of the big air duct. ive had that problem before and thats what it was.