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Sprockets > Bicycle Chain Sprockets > Motor Sprockets

Motor Sprockets for Bicycle Chain

  • 1/2" x 3/32" (#408) bicycle chain is used on multi-speed bicycles with front and/or rear derailleurs.

  • 1/2" x 1/8" (#410) bicycle chain is used on single-speed and 3-speed bicycles with internal hub gears, and also used on electric bicycle gear motors which have a chain between the motor and a sprocket on the rear wheel.

  • 1/2" x 3/16" (#415 and #415H) bicycle chain is used on heavy-duty, industrial, and motorized bicycles, tricycles, and quadracycles.

  • #408, #410, #415, and #415H bicycle chain are available on our chain page.

Motor Sprockets
Keyed Shaft
Motor Sprockets
Flatted Shaft
Motor Sprockets
Motor Sprockets for Keyed Motor Shafts


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.
Item # CTE-24364

$14.95


11 Tooth 11mm Bore Sprocket for 1/2" x 1/8" Bicycle Chain
Motor sprocket for MY1016Z, MY1016Z3, and MY1018Z gear motors. 1-15/16" (50mm) OD, 11mm ID, 4mm wide x 2mm deep keyway. 9mm wide hub. For 1/2" x 1/8" (#410) bicycle chain.
Item # SPR-B1111

$15.95


12 Tooth Freewheel Sprocket with 11mm Bore for 1/2" x 1/8" Bicycle Chain
Motor sprocket for MY1016Z, MY1016Z3, and MY1018Z gear motors. Motor shaft must rotate clockwise to use this sprocket. 1-15/16" (50mm) OD, 11mm ID, 4mm wide x 2mm deep keyway. For 1/2" x 1/8" (#410) bicycle chain.
Item # SPR-B1211FW

$21.95


13 Tooth 11mm Bore Sprocket for 1/2" x 1/8" Bicycle Chain
Motor sprocket for MY1016Z, MY1016Z3, and MY1018Z gear motors. 2-3/8" (57mm) OD, 11mm ID, 4mm wide x 2mm deep keyway. 9mm wide hub. For 1/2" x 1/8" (#410) bicycle chain.
Item # SPR-B1311

$16.95


13 Tooth Freewheel Sprocket with 11mm Bore Adapter for 1/2" x 1/8" and 1/2" x 3/32" Bicycle Chain
Motor sprocket for MY1016Z, MY1016Z3, and MY1018Z gear motors. Right hand thread 13 tooth freewheel. Motor shaft must rotate clockwise to use this sprocket. Includes freewheel sprocket and zinc plated steel adapter. Freewheel is threaded onto the adapter and is replaceable. 2-3/8" (57mm) OD, 11mm ID, 4mm wide x 2mm deep keyway. Works with both 1/2" x 1/8" (#410) and 1/2" x 3/32" (#408) bicycle chain so it can be used with a bicycle rear wheel multi-speed freewheel sprocket or cassette cluster and a derailleur to create a multi-speed transmission.
Item # SPR-B1311FW

$59.95


17 Tooth 7/16" Bore Sprocket for 1/2" x 1/8" Bicycle Chain
17 tooth bicycle chain sprocket. Nickel plated steel. Dimensions 3" OD, 7/16" ID. 5/8" wide x 7/8" OD hub. 1/8" wide x 1/16" deep keyway. For 1/2" x 1/8" (#410) bicycle chain.
Item # SPR-B17716

$4.95

4mm x 4mm x 8mm Key Pin for Keyed Motor Shaft Sprockets
4mm x 4mm x 8mm key pin for sprockets with 4mm wide x 2mm deep keyways sold above. Compatible with MY1016Z, MY1016Z3, and MY1018Z gear motors.
Item # KEY-448

$0.95


Nut with Built-In Lock Washer for Keyed Motor Shaft Sprockets
Motor shaft nut for keyed motor shaft sprockets with 4mm wide x 2mm deep keyways sold above. Compatible with MY1016Z, MY1016Z3, and MY1018Z gear motors.
Item # NUT-8RW

$0.95

Motor Sprockets for Flatted Motor Shafts


9 Tooth 10mm D-Bore Sprocket for 1/2" x 1/8" Bicycle Chain
1-5/8" OD, 8.5mm x 10mm D-bore ID. Fits 10mm OD single-flatted motor shafts with nut and washer on end to secure sprocket in place. For 1/2" x 1/8" (#410) bicycle chain.
Item # SPR-B109

$14.95


11 Tooth 10mm Double D-Bore Sprocket for 1/2" x 1/8" Bicycle Chain
1-15/16" OD, 8.5mm x 10mm ID. Fits 10mm OD dual flatted motor shaft with nut and washer on end to secure sprocket in place. For 1/2" x 1/8" (#410) bicycle chain.
Item # SPR-B1011

Compatible with MY1020 motors.

$14.95


11 Tooth 17mm Dual D-Bore Sprocket for 1/2" x 1/8" Bicycle Chain
1-15/16" OD, 12mm x 17mm ID. Fits 17mm OD dual flatted motor shaft with nut and washer on end to secure sprocket in place. For 1/2" x 1/8" (#410) bicycle chain.
Item # SPR-B1711

Compatible with MY1020Z gear motors.

$14.95


11 Tooth 17mm Dual D-Bore Sprocket for 1/2" x 3/16" Bicycle Chain
1-15/16" OD, 12mm x 17mm ID. Fits 17mm OD dual flatted motor shaft with nut and washer on end to secure sprocket in place. For 1/2" x 3/16" (#415 and #415H) bicycle chain.
Item # SPR-B1711-415

Compatible with MY1020Z gear motors.

$14.95


Nut and Washer for 8mm Left Hand Thread Motor Shafts
Sprocket nut and washer for electric scooter, pocket bike, and go kart motors with 8mm left hand threaded shaft ends. Fits MY1016, MY1020, and ZY1020 motors.
Item # SPR-NW8

$1.95

Related Items: Bicycle Chain

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We carry chain sprockets for all types of electric and non-electric bicycles including BMX bikes, cruiser bikes, mountain bikes, and road bikes. The number symbol # is often dropped from the chain size so a #408 chain is a 408 chain, #410 chain is a 410 chain, a #415 chain is a 415 chain.

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