Which valve stems do I need?

[Incubus]

My new project XS came with tubeless rims. The PO, however, used tubeless tires. At least the double nuts around the valve stem look very much like tire tubes to me. I plan to run tubeless tires. Is the valve stem a standard automotive sizw that I can pick up at any auto parts store? Or is it a special size I have to get from my local Yamaha dealer? Or is it a special size I can get from an auto parts store?

Thanks,

Patrick

[Silent]

I can't answer your question directly, but when you find out the size I'd be interested to know as well. I have a set of 90 deg valve stems on the FJR and I defiantly want to put a set on the XS when I change the tires next time. I get them from BikeEffects Jeff's a good guy to deal with, but I doubt he would know the answer to this question either.

[CatatonicBug]

It's a part number 93900-00001-00. Standard Yamaha part.

[Incubus]

That's, CB. That looks like a double nut setup to me. Maybe PO did run tubeless tires. Guess I won't know until I pull them off.

So I'm guessing an automotive stem won't fit. Bummer.

[bikerphil]

Just .02 to add... tubeless valve stem, both nuts should be on the outside of the rim. When using a tube, one nut on the inside of the rim, the other on the outside. Dennis Kirk also carries the proper tubeless valve stems.