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Front Transmitter: It is the part that carries the front gear (crank) of the bicycle to different sized gear sets and shifts.
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6/7V: This indicates that the transmitter is compatible with 6 or 7-speed systems.
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So if you have a 6 or 7-speed cassette in the back of your bike, you can use this transmitter.
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Tourney: Indicates that Shimano belongs to Tourney, the entry-level transmitter series.
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Generally used in city bikes and lightweight mountain bikes.
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Triple: It means that the pre-transmitter is a triple system, that is, it can work with a crank with three different sized gears.


