Sort by:
Black steel motor gear, M1.0, 12T, 5mm round bore

GPM Steel Motor Gear 13T-20T M1 with 5mm Bore (Round Hole)

$7.90
Made of 20Cr Steel, hardening black treatment,stronger than the original gear, wear-resistance and better transmission.  
Quick view Select options
Brass pinion gear reducer conversion sleeve, 8mm bore to 5mm motor shaft, 14.5mm long.

GPM Brass Pinion Gear Reducer Conversion Sleeve (8mm-5mm)

$4.90
This adapts 8mm bore pinions to fit a 5mm motor shaft
Quick view Select options
Black steel motor gear 13T with 3.175mm bore, M0.5

GPM Upgraded Steel Motor Gear 13T-23T M0.5 with 3.175mm Bore

$7.90
40Cr Steel, Tooth Count: 13T, 14T, 15T, 16T, 17T, 18T, 19T, 20T, 21T, 22T, 23T, Module: 0.5mm,  Bore Diameter: 3.175mm
Quick view Select options
Black steel motor gear, M0.8, 15T, 3.175mm bore, with two screws

GPM Upgraded Steel Motor Gear 15T-30T M0.8 with 3.175mm Bore

$7.90
40Cr Steel, Tooth Count: 13T, 14T, 15T, 16T, 17T, 18T, 19T, 20T, 21T, 22T, 23T, Module: 0.8mm,  Bore Diameter: 3.175mm
Quick view Select options
Black steel motor gear with 2.2mm bore, 13T drive tooth

GPM Upgraded Steel Motor Gear 13T-23T M0.5 with 2.2mm Bore

$7.90
40Cr Steel, Tooth Count: 13T, 14T, 15T, 16T, 17T, 18T, 19T, 20T, 21T, 22T, 23T, Module: 0.5mm, Bore Diameter: 2.2mm
Quick view Select options