I know that because when I put a Nitto Pearl 11 stem on the old Bianchi Pista (stock ahead stem length is 110mm), I was wondering why it felt quite long until I realise it's 120mm instead when measured.
The same go to my father's Bob Jackson when specced a stem, Nitto Pearl 8 measured 90mm (all centre to centre).
I know that because when I put a Nitto Pearl 11 stem on the old Bianchi Pista (stock ahead stem length is 110mm), I was wondering why it felt quite long until I realise it's 120mm instead when measured.
The same go to my father's Bob Jackson when specced a stem, Nitto Pearl 8 measured 90mm (all centre to centre).