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For cast wheels you only ned to get tubeless threaded valve stems. If you order tires online from a place like Motorcycle Superstore they will also have the valve stems. So does you local NAPA or local MC shop. In certain instances you may have to drill out the hole for the new valve stem a bit.
Groover, just for the record, Pirelli Sport Demons are bias ply tires. If I had cast aluminum wheels, I'd get sealed valve stems and go tubeless, although I don't hate tubes.
Good deal, thanks again. I must have missed it somewhere that the Pirelli's were double-ply. Would this be an applicable stem? Any good ones you guys are aware of?http://www.motorcycle-superstore.com/22509/i/drag-specialties-metal-valve-stem?WT.ac=SLIsearch
Shinko SR740f is avaliable in 100/80-16.
Mine are 110/90-16. I don't like to vary from that even though those will probably fit.