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Valve stems- "Carded for road"???

Electric_City

Torture wrench
Apr 14, 2007
1,993
716
I'm buying some valve stems for my Spank Race 33 rimz and found this statement under most Stan's valves "Carded for road" or "Carded for mountain" . Wtf is the difference?

The lizzurds made a new standurd?
 

FlipSide

Turbo Monkey
Sep 24, 2001
1,376
804
I believe it's the length of the valve.

Road rims often have tall rims (because moar aero) that require longer valves. Some dentist-rated crabon mountain rims may need long valves as well, I'm not too sure.