=X-II-AIRFORCE-ONE-II-X=
Veteran
if ever vixion valve spring is not available, what will be the best alternative valve spring?

You're talking about the old YYPANG technology sir. They now solved the problem. When buying YYPANG valve spring, make sure that they're not old stocks. Old stocks are breakable.natry na po namni yy pang napuputol po eh 2 times naputul valve spring namin.
YYPANG CAMS, YYPANG VALVE SPRING, YYPANG CLUTCH SPRING, YYPANG PIPE. Your bike will perform it's best plus UMA CARB.hatiin kna lng kaya bro para super mamaw 2 mtrt 2 yypang hehehe bright idea noh
YYPANGS only has sweeter prices than the others...yypang bro...proven and tested...