CG series motorcycle fuel tank cap lock, inner diameter 39MM, outer diameter 72MM and CG series fuel tank port exactly match, directly replace the original fuel tank cap without adjusting the size; Built-in metal lock core, with exclusive key, prevent fuel theft or fuel tank port is opened maliciously, improve vehicle safety; The cover body is equipped with rubber sealing ring, which is tightly fitted to the oil tank mouth after tightening to effectively prevent fuel leakage and dust/rain intrusion; The surface is chrome plated, rust-proof and wear-resistant, and the appearance is bright and clean, which is suitable for the appearance and style of the vehicle. Equipped with 2 keys of the same specification, to meet the daily use and spare needs.