"5/8in. bore go-kart engine sprocket is used for engines, jack shafts and more. Key broached into the hub eliminates need for a keyway or key. B-type with hub on one side. Sprocket Diameter in. 1 3/4, Teeth qty. 13, Bore Diameter in. 5/8, Chain Size #35, Application Engine sprocket. Long-life hardened case Protective black oxide finish 5/16-18 set screw"
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