Motorcycle Repair: steed 400 honda, air filter oil, accelleration

Question
TY for answering my previous question. My bike run only 110kph at full throttle when no air filter its run only 30kph i almost replace all the consumable part of my bike,air filter,oil filter,gas filter,spark plug, and i check the parts of my carburetor still ok no wear or damage i cleaned all tiny hole of my cabs. when i start the engine idle is ok accelleration is smooth cant you help me  

Answer
Hi Reynaldo.

Are the connections from the carbs to the air filter box all airtight?  Are the connections from the carbs to the manifolds all airtight.  How about the connections from the manifolds to the head?  Are there cracks in the manifolds?  if any of that exists, then they need to be repaired.  For cracks in the manifolds, replace the manifolds.

Also check the connections from the exhaust to the heads.

Start with that and see what you find.
Good luck and ride safe.
FALCON