I am currently using a Yonex Nanoray 300 4U with BG80 Power, 22lbs. I would like to try a higher tension, but the cone says "19-24lbs". Is it possible to string the racket at a higher tension? Like 26lbs? Or will it break my racket?
how about the BG80P? I like the feeling of this string, but is there any other string which would go better with the NR300?
There is a sticky about this
Summary: Rackets are okay to tension up to 30lb with the proper stringer, feel free to string it higher, but Yonex doesn't insure the racket at higher tensions, that's all.
As for input for the string, you might want to try NBG98 or NBG95, if you are willing to look at higher prices, but BG80P is a fine choice, as far as I know.