MATERIAL : Made of high quality aluminum, light weight, high strength, good sealing performance, stable performance. EASY TO DISASSEMBLE : The gearbox is free to disassemble and replace, you can adjust it according to your need. FEATURES : Anodic oxidation surface treatment, the gearbox is not easy to fade and rust. APPLY TO : The gear box is suitable for most 47cc 49cc twostroke mini bikes scooters and atvs. MOTO GEAR BOX PERFORMANCE : The gear box has high performance, it will give you an unique experience.