CG125 motorcycle starting idler tooth, gear number, shaft diameter and CG125 starting system completely match, directly replace the original starting idler tooth, compatible with starting motor, crshaft gear and other components, without modifying the starting structure; Adopt double gear integrated design, can accurately connect the starting motor and crcrshaft gear, ensure the stable transmission of starting power, avoid starting slip, lag; Using high quality alloy steel forging + carburizing treatment, gear tooth surface hardness is high, anti-wear, can withstand the instant impact force when starting, the service life is consistent with the original factory; After removing the corresponding parts of the starting system, install the idler teeth into the corresponding axis position, which is simple to operate (it is recommended to be installed by professionals to ensure the meshing accuracy); Stable power transmission can improve the success rate of starting, reduce abnormal noise and component loss during starting, suitable for frequent starting scenarios.