IRD/Soma Alpina-d Compact Road Triple Front DerailleurThis is the only current front Derailleur that is comatible with both:•Mid-sized triple crankset (46-48 tooth big ring)and•Shimano drop handlebar ("road") STI front shiftersAvailable for 3 different sized seat tubes with clamp mount, and for braze-on mount. All variations use the same basic braze-on Derailleur. Clamp on versions come with an appropriate clamp adaptor installed.
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