Thread: Shimano Tiagra to 105 RD setup
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Old 12-26-25 | 02:03 AM
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choddo
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Nah UDH just lets you not need the specific hanger. If you have the right hanger already don’t worry about that.

105 is a shadow mech, they all have that extra linkage. Just install it like on page 10 of this
https://si.shimano.com/en/pdfs/dm/RX...001-01-ENG.pdf
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