9 Tooth 11mm Bore Sprocket for 1/2" x 1/8" Bicycle Chain
Motor sprocket with key pin for MY1016Z, MY1016Z3, and MY1018Z gear motors. 1-5/8" (41mm) OD, 11mm ID, 4mm wide x 2mm deep keyway. 9mm wide hub. For 1/2" x 1/8" (#410) bicycle chain. Fits Currie® Electro Drive electric bicycle kits plus eZip® and IZIP® electric bicycles with gear motors.
Spare keys are available on our 4mm x 4mm x 8mm Key Pin for Keyed Motor Shaft Sprockets page