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Default Tubeless valve stem

Guys- I'm about to purchase (2) new valve stems for the Morris Mags- I plan on cleaning, painting, and running tubeless.

Is there any performance difference between the cheapie rubber valve stems vs. the chrome VTwin metal stems? I'm not interested in shiney stuff, just solid working stems on an old cast rim...
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No difference.
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cheap at auto parts shops
even get 90* for easy access.
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I noticed on my '06, that it has the really short metal stem on the rear "mag". I just assumed that it was to clear the rear caliper/mount, as it spins.
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I suspect the rear is short because one side has the rotor & the other the sprocket - less clearance to get your hose/gauge onto that valve compared to front wheel... Maybe the dual disc front wheels also use a low clearance valve?

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Harley uses either depending on the wheel and supplies one of each with wheel installation kits. I'd just use whatever old photos show back when Morris mags were common on Sportsters and many other bikes. The hole for the valve is bigger for the rubber type IIRC.
Do the wheels have a safety bead? Not all older cast wheels are suitable for running tubeless, some still need a tube. Often the wheel itself is marked as such.
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auto parts store kits come with hole adapters, diff lengths and turn outs. my 01 sport has the same f/r.
you can run a tubeless on a rim without a safety bead. the bead prevents the tire from riding center when air is lost, this makes for a wild ride. an inexperienced ride will be taken aback but been there done that many times.
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