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My front mech spring lug has broken so I need to get a new one. The original Tiagra 4403 is no longer available and th 4503 has a maximum of 50 teeth . Chainset is non original Ultegra triple 52 39 30 with a 10 speed chain but rear end is 9spd. the original Tiagra mech worked ok but did rub very slightly.Any idea which mech. might work-perhaps Ultegra or 105? Mech. is braze on.
Posted : 22/05/2014 10:10 am