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The profile of most triple MTB front derailleur cages is set to match a 42 or a 44. Pair it with a 48 and you'll have to raise it up for it to clear, and then you can have problems with bad performance, chain drop, and the chain rubbing on the cage in some of the small ring combinations. There are Shimano front derailleurs that have a cage profile that ...


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What you need to do is look up the total capacity specifications of both your front and rear derailleurs. For a front derailleur the total capacity is just the largest difference between the largest and smallest chainring tooth counts the derailleur can handle. The total capacity is for a rear derailleur is the largest (difference between the largest and ...


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