[MrHix61]

I have a 2022 690 SMC R and want to put 90 degree valve stems on it. What diameter are the holes in the rims?

Thanks,

MrHix

 

[Debi]

Not sure you can use those on Alpinas.

 

[salty_monk]

There are two sizes for valve stems they are: 8.3mm / 0.357" This size fits specific Italian wheels. 11.3mm / 0.453" This size fits most every Japanese manufactured tubeless tire rim since early 1980's.

 

[MrHix61]

Puig sells 8.3 and 11 mm, Bikemaster sells 8.3 and 11.3 mm, K&L sells 10 mm, and Driven sells 8.5 and 11.5 mm just to be confusing.

MrHix

 

[salty_monk]

Yeah... god forbid anyone could standardise things!