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Sprockets > Bicycle Chain Sprockets  > Axle Sprockets and Hubs

Axle Sprockets and Hubs for Bicycle Chain

  • 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 1/8" (#410) bicycle chain is available on our Chain Page.

  • Motors that are compatible with the sprockets sold on this page are available on our Motors with 1/2" x 1/8" #410 Chain Sprockets Page.

Axle Sprockets and Hubs
All of the axle sprockets and axle sprocket hubs on this page are Group 1 (G1)
which are 100% compatible and interchangeable with each other.
Axle Sprockets Axle Sprocket Hubs

Axle Sprockets

These are custom-made sprockets which are machined on an individual order basis so please allow for extra processing time when ordering. Any size Group 1 (G1) sprocket for 1/2"x1/8" (#410) chain between 21 and 90 teeth can be custom-made so if you need a size that is not listed below then please visit our custom-made sprockets page.



30 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1)
30 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. 4.738" OD, 2" ID, 2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
Item # SPR-410301
$56.95


35 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1)
35 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. 5.376" OD, 2" ID, 2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
Item # SPR-410351
$58.95


40 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1)
40 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. 6.015" OD, 2" ID, 2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
Item # SPR-410401
$60.95


45 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1)
45 tooth sprocket. 7.928" OD, 2" ID, 2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
Item # SPR-410451
$65.95


50 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1)
50 tooth sprocket. 8.884" OD, 2" ID, 2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
Item # SPR-410501
$69.95


55 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1)
57 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. 9.362" OD, 2" ID, 2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
Item # SPR-410551
$74.95


60 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1)
60 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. 9.840" OD, 2" ID, 2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
Item # SPR-410601
$81.95


65 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1)
65 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. 10.478" OD, 2" ID, 2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
Item # SPR-410651
$86.95


70 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1)
70 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. 11.752" OD, 2" ID, 2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
Item # SPR-410701
$89.95


75 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1)
75 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. 12.229" OD, 2" ID, 2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
Item # SPR-410751
$92.95


80 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1)
80 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. 13.026" OD, 2" ID, 2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
Item # SPR-410801
$94.95


85 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1)
85 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. 13.822" OD, 2" ID, 2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
Item # SPR-410851
$96.95


90 Tooth Sprocket for 1/2" x 1/8" Bicycle Chain (G1)
90 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. 14.618" OD, 2" ID, 2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
Item # SPR-410901
$99.95

Axle Sprocket Hubs


Sprocket Hub for 3/4" Axles (G1)
Zinc plated steel sprocket hub. 3/4" ID bore. 3/16" keyway. Four 3/8" ID holes with 2.875″ bolt circle diameter and four 1/4" ID holes with 3.228″ bolt circle diameter. Includes two setscrews. 4" outside diameter. Minimum recommended sprocket size is 28 teeth.
Item # HUB-201034
$19.95


Sprocket Hub Hardware Kit for 3/4" Axles
Four 3/8" OD x 3/4" long socket head bolts with nuts. Two set screws. One 3/16" x 3/16" x 1-1/4" keystock. Compatible with item # HUB-201340 sold above.
Item # HDW-2875-316
$2.49


Sprocket Hub for 1" Axles (G1)
Zinc plated steel sprocket hub. 1" ID bore. 1/4" keyway. Four 3/8" ID holes with 2.875″ bolt circle diameter and four 1/4" ID holes with 3.228″ bolt circle diameter. Includes two setscrews. 4" outside diameter. Minimum recommended sprocket size is 28 teeth.
Item # HUB-201100
$19.95


Sprocket Hub for 1-1/4" Axles (G1)
Zinc plated steel sprocket hub. 1-1/4" ID bore. 1/4" keyway. Four 3/8" ID holes with 2.875″ bolt circle diameter and four 1/4" ID holes with 3.228″ bolt circle diameter. Includes two setscrews. 4" outside diameter. Minimum recommended sprocket size is 28 teeth.
Item # HUB-201114
$19.95


Sprocket Hub Hardware Kit for 1" and 1-1/4" Axles
Four 3/8" OD x 3/4" long socket head bolts with nuts. Two set screws. One 1/4" x 1/4" x 1-1/4" keystock. Compatible with item # HUB-201100 and HUB-201114 sold above.
Item # HDW-2875-104
$2.49

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