[Austin71c]

Whenever I open up the throttle and rpms reach 11k to 11.5 the bike just stops until the rpms are back down to 10 then it starts again idk why.

 

[Rapido1]

First thing that comes to mind is a fuel delivery issue, but hopefully someone here has had similar issue and fixed. Is there a ton of miles on your bike? if so, have you checked the fuel filter?

 

[Topaz]

Aren't you hitting the rev limiter? I'm not sure what's the limit. I try to shift between 10 and 11k. Sometimes I hit the limiter and that's exactly what the limiter does,

 

[Rapido1]

My N300 Red lines at 13,000

 

[jkv45]

It should rev higher than 11,000 before hitting the limiter.

Bad fuel, restricted intake snorkel, dirty air filter, or dirty injectors may do it.

A bad fuel pump might do it as well.

 

[IronWarrior]

As mentioned above, definitely sounds like a fuel or air delivery issue. Definitely check all mentioned above.
A few other thoughts:
Does the ECU have a limp mode if it detects errors? (Though I expect a CEL lit if this was the case).
Might it have something to do with the secondary (ECU controlled) throttle butterfly?