Whats the difference between #4 and #6 flex on full tilts?

RHYKS

Member
Whats the difference between #4 and #6 flex on full tilts? I can't find the answer on the interwebs.. I just know that one Ski boot has a #4 flex tongue and the other has a #6 flex tongue.
 
Yep, like uncle sam said its on a scale from 1-10 where the higher number is stiffer. So if you want a stiffer boot go with the 6 but if you want softer go with the 4
 
So basically a any number close to 10 would be a big mountain boot for charging lines, and any low number would be a forgiving park boot.
 
to all of you saying 2, he was just asking what the numbers meant. maybe he thought it was just a number to identify the tongue by color.
 
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