New tyres on my Kz 750 E1 1980

Hi all , yesterday went to the garage to have a new tyre fitted, and I  knew it had a tube in the old tyre but told the fitter that these rims are tubeless,  anyway he had to refit the old inner tube back into the new tubeless tyre as he didn't have the correct size tyre valve,  iI don't like this idea really so when I  get the back tyre changed I'm wanting to get hold of a pair of tyres valves that fit , looking around on the forum and elsewhere looks like I need 8.3mm valves is this correct , I've found a couple that look Ok .on ebay etc. 
thanks again for any help. 
Phil

That looks to me like a "tubeless" valve for a "spoked/chrome" rim. Valves for alloy rims are normally a "barbed all rubber construction that "pulls" through the rim. (see below) I believe they are a pretty standard item so would question what your tyre fitter has told you !!!!
PS: the tubes may have been fitted because there is corrosion on the rim stopping the beads sealing correctly ?

Hi there wasn't really any corrosion to see on the rims , and he did have the normal type in your picture but I think  they were a larger diameter as used on cars, I'm sure that when I  last got tyre fitted to a Zx9r I  owned they just fit  standard valves , I had these type of wheels on a Z550  in the 80s with metzeller me99 tyres fitted and i carnt remember having tubes in them , but that's a long time ago LOL.
M&P show them in 8.3 mm like in your picture but out of stock.
Thanks again Phil 

The OEM valve stems follow JIS 430 standard. I personally like the all rubber type better, but I'm not sure if the hole in the wheel matches.



 

Nessism wrote:

The OEM valve stems follow JIS 430 standard. I personally like the all rubber type better, but I'm not sure if the hole in the wheel matches


 

Thanks Ed, every day is indeed a school day can't say I've ever seen "bolt in" valves used on alloy rims - if 8.3mm is correct they are out there