Seller notes

Key Product Features Compatible with 44mm Bottom BracketThere's no product instruction shipped with it, please be informed. If your bike is with 2" cup of bottom bracket, you have to buy a bottom bracket converter Black BB Bottom Bracket Conversion Kit (American to Euro)-Gas Motorized BicycleThis product doesn't include sprocket, if you don't have sprocket, please order 32T/36T Single Speed Crankset for Mountain Road, Fixed Gear Bike Folding BicycleThe length of the pedal crank shaft is about 26...

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