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PostPosted: Mon Sep 17, 2012 9:27 pm 
Devout Dirtbag

Joined: Sat Apr 07, 2012 1:23 pm
Posts: 102

can a Dura Ace FH-7400 hub be retrofit with a 10-speed cassette? I found the thread below, but if anyone could confirm that'd be great. I have found conflicting info as to whether 7400 was 7 or 8 speed. Maybe both were supported in different iterations, even? Thanks in advance. ... ?p=1250860 ... 3544790850

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PostPosted: Tue Sep 18, 2012 12:41 am 
Road Moderator
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Joined: Thu Jun 18, 2009 1:07 pm
Posts: 4714
Location: Sheppey, Kent
7400 saw a few guises. Think the original was 7 speed and the later (7403) was 8 speed. I'm not 100% on this but I think that when the dual pivot brakes were introduced that's when 8 speed was introduced too.

A 10 speed cassette will fit onto a 8 speed cassette body but not a 7.

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