CG125 motorcycle rocker arm aluminium alloy top rod rocker arm assembly

CG125 motorcycle rocker arm, moulded 1:1 according to CG125 original factory specifications, rocker arm length 145mm, shaft hole diameter 16mm, mounting holes and cam contact angles perfectly match the original engine cylinder head, directly replace old parts without modification; made of ADC12 high-quality aluminium alloy die-cast, tensile strength ≥280MPa, lightweight (about 220g) and strong rigidity, with 30% improved heat dissipation efficiency compared to ordinary cast iron rocker arms; the working surface of the rocker arm in contact with the cam is heat-treated (hardness HRC45-50), equipped with built-in bronze bush bearings, smooth rotation without sticking, wear ≤0.02mm per 10,000 km; uniform arm thickness, dynamic balance error ≤0.05mm, low vibration and noise during operation, solves valve noise and unstable power transmission caused by worn old rocker arms; surface treated with anodising and sandblasting, salt spray test ≥72 hours, suitable for high-temperature and oily engine cylinder head environments, long-term use without easy oxidation or colour change; includes upper rocker arm body, bronze bush bearings, fixing shaft, full set of washers and accessories, ready to assemble, simplifying the maintenance process