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Old 04-10-19, 08:13 PM
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Join Date: Aug 2005
Location: Pittsburgh, PA
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Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!

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It seems you have a Tiagra 9-speed triple front derailleur with a 31.8 mm (1-1/4") diameter clamp. They aren't that expensive if you find a direct replacement but a 1-1/4" clamp isn't all that common. You may do better to find a 1-1/4" diameter accessory clamp and use a "braze-on" front derailleur. You could use a 9-speed triple front derailleur from the 105 group too and it would be a FD-5503.
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