Wheel Valve stem size

11.3mm. I always switched to 90 degree angle valve stems. Ebay has the best prices. V-1000 or V650 are the same size........ 11.3mm angled valve stems for sale | eBay

DmitryS said:

How long does angled stem live?

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On my 2009 V-660 i had them on from 2010 and they were still fine when i sold the bike in 2014. On my FJR put them on in 2014 still working fine when i traded in the bike in 2016 in 2016 put them on my V-1000 still doing the job when i sold it late 2021...