CG125 chain box, with installation clips and hole positions matching 1:1 with the CG125 rear swingarm and sprocket area, compatible with Honda CG125, Pearl River 125 and other 125cc pushrod engine models, directly replacing the original chain box without modification; made of high-strength ABS engineering plastic via injection moulding, oil-resistant, impact-resistant, does not deform after long-term contact with chain grease, effectively prevents dust and mud from entering the chain transmission area; semi-open design covers the core chain transmission section while allowing heat dissipation, preventing heat build-up during high-speed operation and stopping pant legs or debris from getting caught in the chain; equipped with clips and positioning posts, simply press in line with the swingarm holes to secure, no tools needed for a quick installation, easy even for beginners; matte silver-grey colour coordinates with the CG125 rear wheel system, enhancing the cleanliness and aesthetics of the transmission area after installation.