Originally Posted by
HillRider
Is the width difference really that much? .4" = 10.2 mm which seems like way too much for one cog and spacer.
That's an approx difference. If memory serves me, Campy 7 sp cassettes are spaced at 126mm. Campy 8, 9 and 10 are 130mm, hence about 4mm. Close enough IMO.
Tim