port job

[brandonhtrx450r]

is the head on a 05 trx450 holding back power as bad as everyone says?wanting to get port job but dont know if its worth it.does anyone know whats the best thing to do inside of one?need help 2 decide. do i need to go with different valves or do i keep the stock ones?

[Architects]

What are your other mods.

[2004exrider]

Originally posted by Architects
What are your other mods.

[F-16Guy]

That banana is gettin' it!:muscle: