Mirage Crank Shortener
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A low cost method of reducing crank length so that, for instance, children can ride on the rear of an adult tandem.
These crank shorteners are sold as a pair for left and right crank. They fit crank arms between 17 mm and 37 mm in width and shorten the crank by either 25 or 45 mm. See additional photos to see how they fit.
These shorteners are compatible with the standard 9/16 inch pedal threads used on almost all bicycles. They will not work with the 1/2 inch pedal thread used on some childrens' and BMX bicycles.
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