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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

Custom-Made Axle Sprockets with G1 Mounting Pattern

Important Information These are custom-made sprockets which are machined on an individual order basis so please allow for extra processing time when ordering. Custom-made sprocket orders cannot be cancelled after machining has begun on the sprocket and returns are not accepted on custom-made sprockets.

 

Any size Group 1 (G1) sprocket for 1/2"x1/8" (#410) chain between 28 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.



28 Tooth Sprocket for 1/2" x 1/8" (#410) Bicycle Chain with G1 Mounting Pattern
28 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. G1 mounting pattern. 4.75" OD, 2" ID, 2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
Item # SPR-41028G1
$54.95


30 Tooth Sprocket for 1/2" x 1/8" (#410) Bicycle Chain with G1 Mounting Pattern
30 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. G1 mounting pattern. 5" OD, 2" ID, 2.875" bolt circle diameter. Four 3/8" ID bolt holes. Made of aircraft-grade tempered (hardened) aluminum alloy.
Item # SPR-41030G1
$56.95


35 Tooth Sprocket for 1/2" x 1/8" (#410) Bicycle Chain with G1 Mounting Pattern
35 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. G1 mounting pattern. 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-41035G1
$58.95


40 Tooth Sprocket for 1/2" x 1/8" (#410) Bicycle Chain with G1 Mounting Pattern
40 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. G1 mounting pattern. 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-41040G1
$60.95


45 Tooth Sprocket for 1/2" x 1/8" (#410) Bicycle Chain with G1 Mounting Pattern
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-41045G1
$65.95


50 Tooth Sprocket for 1/2" x 1/8" (#410) Bicycle Chain with G1 Mounting Pattern
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-41050G1
$69.95


55 Tooth Sprocket for 1/2" x 1/8" (#410) Bicycle Chain with G1 Mounting Pattern
57 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. G1 mounting pattern. 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-41055G1
$74.95


60 Tooth Sprocket for 1/2" x 1/8" (#410) Bicycle Chain with G1 Mounting Pattern
60 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. G1 mounting pattern. 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-41060G1
$81.95


65 Tooth Sprocket for 1/2" x 1/8" (#410) Bicycle Chain with G1 Mounting Pattern
65 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. G1 mounting pattern. 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-41065G1
$86.95


70 Tooth Sprocket for 1/2" x 1/8" (#410) Bicycle Chain with G1 Mounting Pattern
70 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. G1 mounting pattern. 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-41070G1
$89.95


75 Tooth Sprocket for 1/2" x 1/8" (#410) Bicycle Chain with G1 Mounting Pattern
75 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. G1 mounting pattern. 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-41075G1
$92.95


80 Tooth Sprocket for 1/2" x 1/8" (#410) Bicycle Chain with G1 Mounting Pattern
80 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. G1 mounting pattern. 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-41080G1
$94.95


85 Tooth Sprocket for 1/2" x 1/8" (#410) Bicycle Chain with G1 Mounting Pattern
85 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. G1 mounting pattern. 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-41085G1
$96.95


90 Tooth Sprocket for 1/2" x 1/8" (#410) Bicycle Chain with G1 Mounting Pattern
90 tooth sprocket for 1/2" x 1/8" (#410) bicycle chain. G1 mounting pattern. 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-41090G1
$99.95

Axle Sprocket Hubs with G1 Sprocket Mounting Pattern


Sprocket Hub for 5/8" Axles (G1)
Zinc plated steel sprocket hub. 5/8" 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. 4" outside diameter. 3/4" overall width. Two setscrews (setscrews included).
Item # HUB-201058
$19.95


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. 4" outside diameter. 3/4" overall width. Two setscrews (setscrews included).
Item # HUB-201034
$19.95


Sprocket Hub Hardware Kit for 5/8" and 3/4" Axles
Four 3/8" OD x 3/4" long socket head bolts with lock nuts. One 3/16" x 3/16" x 1-1/4" key pin. Compatible with item # HUB-201058 and HUB-201034 listed above.
Item # HDW-2875-316
$2.95


3/16" x 3/16" x 3/4" Key Pin
3/16" x 3/16" x 3/4" steel key pin for sprocket hubs with 3/16" keyway. Compatible with item # HUB-201058 and HUB-201034 listed above.
Item # KEY-316X34

$0.95


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. 4" outside diameter. 3/4" overall width. Two setscrews (setscrews included).
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. 4" outside diameter. 3/4" overall width. Two setscrews (setscrews included).
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 lock nuts. One 1/4" x 1/4" x 1-1/4" key pin. Compatible with item # HUB-201100 and HUB-201114 listed above.
Item # HDW-2875-104
$2.95


1/4" x 1/4" x 3/4" Key Pin
1/4" x 1/4" x 3/4" steel key pin for sprocket hubs with 1/4" keyway. Compatible with item # HUB-201100 and HUB-201114 listed above.
Item # KEY-316X34

$0.95


Set Screw for G1 Sprocket Hubs
Set screw for G1 axle sprocket hubs. Compatible with item # HUB-201058, HUB-201034, HUB-201100, and HUB-201114 listed above.
Item # HDW-2860
$0.25

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