Is it???? :blink: No, In Spain never listen this naming, at least, in this way.. For me, this naming correspond to: Mod: Modification, something that is not original, for example, koxx frame with echo fork and trialtech handlebar. Stock: Bike completly original or for example, koxx frame with all components Try-all... In Spain i listen this naming for example in cars: Modified cars " for competitions for example" and Stock cars " normal street cars" Thank you for the information..