I cannot quite break 60kph but find my bike plenty fast, especially when it come time to stop.
60kph is only 37mph, he wants to go 60mph, that is 97kph.
I sure hope you have really solid nice bike with dual disc brake and good tires as bicycle parts won't take that kind of speed.
"gutted out stock muffler but replaced the cap
i want to get a better head and muffler.
i still have a boost bottle and reed valves im trying to get working on it."
It really helps to understand how a stoke engine works if you want to improve performance.
It has no valves, it tries to do intake and exhaust at the same time.
First of all throw the 'sucker bottle' away, they don't do anything with a regular system but lighten your wallet, and with an intake reed nothing comes back to catch and 'boost back' anyway.
Next is understanding the exhaust.
You lost power by gutting your exhaust, you want a timed push back to shove the escaping unburnt fuel back into the cylinder.
Just follow the green intake fuel mix path.
An expansion chamber exhaust is like a reverse turbo charger, it shoves that wasted fuel back in for a bigger fuel mix.
Then take page from the rice rockets book, get aerodynamic!
After ~32mph you are just fighting the wind resistance.
Want to actually feel how much force?
Hold you hand out the window in a car at 60mph and turn it.
You can go for more power to compensate, or just make the force less with aerodynamics.