Joined: Jan 2009
Posts: 678
Likes: 0
From: Fenton, MI
Bikes: CAAD 9 , Schwinn World, Prologue, Madison , Sports Tourer ; Ironman , Opus lll , Allez , Peugeot 753, Trek 531 (2) , Assenmacher ( custom)
I would measure the center of where the steerer bolt pops out of the top of the stem , to the center of the clamp area .