CG125 Motorcycle Main Stand Shaft 40Cr Alloy Steel Main Support Pivot

Common specifications for the CG125 motorcycle main stand shaft are 17×141mm (diameter × length). The mounting holes perfectly match the frame and the main stand bracket, allowing direct replacement without modification and ensuring precise alignment of the support structure. Made from premium 40Cr alloy steel through integral forging and tempered heat treatment, it has a tensile strength of ≥800MPa and a hardness of HRC35-40, capable of stably supporting the entire vehicle weight (compatible with CG125 approximately 96kg curb weight) without easily deforming or breaking. The shaft is precision ground by CNC, with a cylindricity error of ≤0.02mm and a surface roughness Ra of ≤0.8μm, ensuring minimal clearance with the bracket, preventing jamming and abnormal noise, and making the main stand easy to deploy and retract. The surface undergoes zinc plating and passivation dual anti-rust treatment, passing salt spray testing for ≥72 hours, effectively resisting rain and mud corrosion, and allowing long-term outdoor parking without rusting. Its service life is twice that of ordinary carbon steel shafts.