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Sprockets > Bicycle Chain Sprockets
Bicycle Chain Sprockets


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1/2" x 3/32" (#408) bicycle chain is used on multi-speed bicycles
with front and/or rear derailleurs.
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1/2" x 1/8" (#410) bicycle chain is used on single-speed and 3-speed bicycles with internal hub gears, and also on electric bicycle gear motors which have a chain between them and a sprocket on the rear wheel.
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1/2" x 3/16" (#415 and #415H) bicycle chain is used on heavy-duty, industrial, and motorized bicycles, tricycles, and quadracycles.
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#408, #410, #415, and #415H bicycle chain are available on our chain page.
Bicycle Chain Sprockets for Keyed Motor Shafts

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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
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$14.95
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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
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$15.95
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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
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$21.95
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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
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$16.95
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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
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$59.95
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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
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$4.95
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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
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$0.95
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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
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$0.95
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Bicycle Chain Sprockets for Flatted Motor Shafts

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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
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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.
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$14.95
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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.
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$14.95
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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.
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$14.95
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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
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$1.95
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Bicycle Chain Sprockets for Pedal Cranks

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36 Tooth 15/16" Bore Sprocket for 1/2" x 1/8" Bicycle Chain
36 tooth bicycle chain sprocket.
Chrome plated steel. Dimensions 6" OD, 15/16" ID. For 1/2" x 1/8" (#410) bicycle chain.
Item # SPR-B36S
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$8.95
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36 Tooth 15/16" Bore Sprocket for 1/2" x 1/8" Bicycle Chain
36 tooth bicycle chain sprocket.
Chrome plated steel. Dimensions 6" OD, 15/16" ID. For 1/2" x 1/8" (#410) bicycle chain.
Item # SPR-B36
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$8.95
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44 Tooth 15/16" Bore Sprocket for 1/2" x 1/8" Bicycle Chain
44 tooth bicycle chain sprocket. Chrome plated steel. Dimensions 7-1/8" OD, 15/16" ID. For
1/2" x 1/8" (#410) bicycle chain.
Item # SPR-B44
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$8.95
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44 Tooth 15/16" Bore Sprocket for 1/2" x 1/8" Bicycle Chain
44 tooth bicycle chain sprocket. Chrome plated steel with black enameled
silk-screened design. Dimensions 7-1/8" OD, 15/16" ID. For 1/2" x 1/8" (#410) bicycle chain.
Item # SPR-B45
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$8.95
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Bicycle Chain 5-Hole
Freewheel Sprockets

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24 Tooth 2-1/8" Bore 5-Hole Sprocket for 1/2" x 1/8" and
1/2" x 3/32" Bicycle Chain
24 tooth bicycle chain sprocket. Black powder coated finish steel. Dimensions 4-5/8" OD, 2-1/8" ID. Five 5.1mm ID mounting
holes. Mounts onto our 5-hole freewheels sold below. Compatible with both 1/2" x
1/8" (#410) and
1/2" x 3/32" (#408) bicycle chain.
Item # SPR-B24F
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$19.95
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30 Tooth 2-1/8" Bore 5-Hole Sprocket for 1/2" x 1/8" and 1/2" x
3/32" Bicycle Chain
30 tooth bicycle chain sprocket. Black powder coated finish steel. Dimensions 5" OD, 2-1/8" ID. Five 5.1mm ID mounting
holes. Mounts onto our 5-hole freewheels sold below. Compatible with both 1/2" x
1/8" (#410) and
1/2" x 3/32" (#408) bicycle
chain.
Item # SPR-B30F
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$22.95
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32 Tooth 2-1/8" Bore 5-Hole Sprocket for 1/2" x 1/8" and 1/2" x
3/32" Bicycle Chain
32 tooth bicycle chain sprocket. Black powder coated finish steel. Dimensions 5-1/4" OD, 2-1/8" ID. Five 5.1mm ID mounting
holes. Mounts onto our 5-hole freewheels sold below. Compatible with both 1/2" x
1/8" (#410) and
1/2" x 3/32" (#408) bicycle
chain.
Item # SPR-B32F
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$23.95
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40 Tooth 2-1/8" Bore 5-Hole Sprocket for 1/2" x 1/8" and 1/2" x
3/32" Bicycle Chain
40 tooth bicycle chain sprocket.
Nickel plated steel. Dimensions 6-5/8" OD, 2-1/8" ID. Five 5.1mm ID mounting
holes. Mounts onto our 5-hole freewheels sold below. Compatible with both 1/2" x
1/8" (#410) and
1/2" x 3/32" (#408) bicycle
chain.
Item # SPR-B40F
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$25.95
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44 Tooth 2-1/8" Bore 5-Hole Sprocket for 1/2" x 1/8" and 1/2" x
3/32" Bicycle Chain
44 tooth bicycle chain sprocket. Black powder coated finish steel. Dimensions 7-1/8" OD, 2-1/8" ID. Five 5.1mm ID mounting
holes. Mounts onto our 5-hole freewheels sold below. For 1/2" x 1/8" (#410) and
1/2" x 3/32" (#408) bicycle
chain.
Item # SPR-B44F
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$29.95
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48 Tooth 2-1/8" Bore 5-Hole Sprocket for 1/2" x 1/8" and 1/2" x
3/32" Bicycle Chain
48 tooth bicycle chain sprocket. Black powder coated finish steel. Dimensions 7-13/16" OD, 2-1/8" ID. Five 5.1mm ID mounting
holes. Mounts onto our 5-hole freewheels sold below. For 1/2" x 1/8" (#410) and
1/2" x 3/32" (#408) bicycle
chain.
Item # SPR-B48F
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$32.95
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5-Hole Freewheel with 1.375" x 24 TPI Right Hand Threads
5-hole bicycle freewheel mechanism with 1.375" x 24 TPI right hand (clockwise)
threads. Five sprocket mounting holes with M5x0.8 threads. Compatible with all 2-1/8"
bore 5-hole sprockets sold on this page. 1.375" x
24 TPI (ISO) threads are used on virtually all modern bicycle wheels.
Item # FWM-205
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$19.95
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5-Hole Freewheel with 1.375" x 24 TPI Left Hand Threads
5-hole bicycle freewheel mechanism with 1.375" x 24 TPI left hand
(counterclockwise) threads. Five sprocket mounting holes with M5x0.8 threads.
Compatible with all 2-1/8" bore 5-hole sprockets sold on this page.
1.375" x 24 TPI (ISO) threads are used on virtually all modern bicycle
wheels.
Item # FWM-210
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$24.95
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Sprocket Mounting Bolts and Locknuts for 5-Hole Freewheels
Set of five quantity M5x0.8 x 14mm long bolts and M5x0.8 locknuts. Compatible
with freewheel item # FWM-205 and FWM-210 sold above.
Item # HDW-200
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$2.95
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5-Hole Freewheel to Axle Adapters
For Metric Diameter Axles

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Freewheel to Axle Adapter with Right Hand Threads for 20mm Axle
Freewheel adapter with 1.375" x 24 TPI right hand (counterclockwise)
threads. 20mm ID, 0.9" wide, 6mm keyway, Two set screws, Made from zinc plated
steel. Compatible with 5-hole freewheel item number FWM-205 sold above.
Item # FWM-ADAPTER20
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$24.95
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Freewheel to Axle Adapter with Right Hand Threads for 15mm Axle
Freewheel adapter with 1.375" x 24 TPI right hand (clockwise) threads.
15mm ID,
0.9" wide, 4mm keyway, Two set screws, Made from zinc plated steel. Compatible
with 5-hole freewheel item number FWM-205 sold above.
Item # FWM-ADAPTER15
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$24.95
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4mm x 4mm x 25mm Axle Key
4mm x 4mm x 25mm steel axle key for freewheel to axle adapters with 4mm keyway.
Item # KEY-4425
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$0.95
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6mm x 6mm x 25mm Axle Key
6mm x 6mm x 25mm steel axle key for freewheel to axle adapters with 6mm keyway.
Item # KEY-6625
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$0.95
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For Standard Diameter Axles

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Freewheel to Axle Adapter with Right Hand Threads for 1" Axle
Freewheel adapter with 1.375" x 24 TPI right hand (clockwise) threads. 1" ID,
0.9" wide, 1/4" keyway, Two set screws, Made from zinc plated steel. Compatible
with 5-hole freewheel item number FWM-205 sold above.
Item # FWM-ADAPTER1
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$24.95
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Freewheel to Axle Adapter with Left Hand Threads for 1" Axle
Freewheel adapter with 1.375" x 24 TPI left hand (counterclockwise)
threads. 1" ID, 0.9" wide, 1/4" keyway, Two set screws, Made from zinc plated
steel. Compatible with 5-hole freewheel item number FWM-210 sold above.
Item # FWM-ADAPTER2
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$29.95
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Freewheel to Axle Adapter with Right Hand Threads for 3/4" Axle
Freewheel adapter with 1.375" x 24 TPI right hand (clockwise) threads.
3/4" ID,
0.9" wide, 3/16" keyway, Two set screws, Made from zinc plated steel. Compatible
with 5-hole freewheel item number FWM-205 sold above.
Item # FWM-ADAPTER3
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$24.95
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Freewheel to Axle Adapter with Left Hand Threads for 3/4" Axle
Freewheel adapter with 1.375" x 24 TPI left hand (counterclockwise)
threads. 3/4" ID, 0.9" wide, 3/16" keyway, Two set screws, Made from zinc plated
steel. Compatible with 5-hole freewheel item number FWM-210 sold above.
Item # FWM-ADAPTER4
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$29.95
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Freewheel to Axle Adapter with Right Hand Threads for 5/8" Axle
Freewheel adapter with 1.375" x 24 TPI right hand (clockwise) threads.
5/8" ID,
0.9" wide, 3/16" keyway, Two set screws, Made from zinc plated steel. Compatible
with 5-hole freewheel item number FWM-205 sold above.
Item # FWM-ADAPTER8
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$24.95
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Freewheel to Axle Adapter with Left Hand Threads for 5/8" Axle
Freewheel adapter with 1.375" x 24 TPI left hand (counterclockwise)
threads. 5/8" ID, 0.9" wide, 3/16" keyway, Two set screws, Made from zinc plated
steel. Compatible with 5-hole freewheel item number FWM-210 sold above.
Item # FWM-ADAPTER9
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$29.95
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3/16" x 3/16" x 1" Axle Key
3/16" x 3/16" x 1" steel axle key for freewheel to axle adapters with 3/16" keyway.
Item # KEY-316X1
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$0.95
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1/4" x 1/4" x 1" Axle Key
1/4" x 1/4" x 1" steel axle key for freewheel to axle adapters with
1/4" keyway.
Item # KEY-104X1
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$0.95
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Threaded Freewheel Sprockets

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12 Tooth Freewheel Sprocket for 1/2" x 1/8"
(#410) Bicycle Chain 12 tooth sprocket for 1/2" x 1/8" (#410) bicycle
chain. Roller clutch sprocket with one-way bearing. Rotates freely in one
direction and fixed in the other direction. Freewheel engages in the clockwise
direction. Fits 18mm threaded hub or shaft. Sprocket OD: 54mm. Overall
length of sprocket: 25mm. M18x1.00 right hand (CW / clockwise) threads.
Item # SPR-41012F |
$13.95
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14 Tooth Freewheel Sprocket for 1/2" x 1/8"
(#410) Bicycle Chain 14 tooth sprocket for 1/2" x 1/8" (#410) bicycle
chain. Roller clutch sprocket with one-way bearing. Rotates freely in one
direction and fixed in the other direction. Freewheel engages in the clockwise
direction. Fits 18mm threaded hub or shaft. Sprocket OD: 62mm. Overall
length of sprocket: 25mm. M18x1.00 right hand (CW / clockwise) threads.
Item # SPR-41014F |
$14.95
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