Box Five Square Taper BMX Crank Arms - 140mm - Black 38t This bottom bracket is designed

This bottom bracket is designed for frames with Euro bottom bracket shells with 68mm or 73mm widths

or 7 speed index shifting systems

This listing is for ONE 20t freewheel

Anodizing is how we dye the metal

they are not made from the original molds

Box Five Square Taper BMX Crank Arms - 140mm - Black 38t This bottom bracket is designedThe Box Five Square Taper Cold Forged Crank Arms are constructed of 6061 T 6 aluminum. Featuring a JIS square taper standard, the oversized bottom bracket interface showcases a step down shape specific to the crank arm length meeting at the pedal boss. Unlike alternative options, no two lengths are the same. They are designed to be used with a square taper bottom bracket and 110mm 5 bolt chain rings (not included). With this purchase, you get one