Variants
The manufacturer's versions of this model (code suffix, color, cage). Each figure counts spec sheets that name that exact version; most name only the model.
How spec sheets write it
The most common ways bicycle spec sheets name it, by number of mentions.
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Shimano EF50, 8 speed
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Shimano EZ-Fire ST-EF50, 7 Speed (21spd Total)
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Shimano EF50 trigger, 7 speed
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Shimano Altus ST-EF50
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Shimano EF50, 7 speed
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Shimano EF-50, EZ Fire
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Shimano EF-50 (integrated w/ shifter)
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Shimano EF50 EZ Fire
Bicycles
Published bicycles that use it, newest model years first.