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Originally Posted by oldpotatoe
'Ultra' meant for Record they changed the spring carrier to a fiber/plastic type one and the shift disc was drilled for lighter weight and has a teflon type coating. 'QS' for Record and Chorus essentially means nothing and does not require 'QS front ders..again, for Record and Chorus.
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Piggybacking: is it possible to use the pre-QS shifters with post 2010 front derailleurs?