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Shimano Front Mech - Which One ?

cheese_toastiecheese_toastie Posts: 35
edited January 2013 in MTB workshop & tech
Hi, I am currently rebuilding an old Giant Rock mountain bike that I bought with a load of parts missing. I need a front mech, preferably a Shimano type but dont know which one to get.
The tube it clamps to is 34.9mm, the chainset I will be using is 28/38/48mm and it needs to be a single cable top pull type, the bike is 21 speed.
I was worried there may be different types for different size chain rings to be honest. Thanks in advance for any help or suggestions.

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