Glixal ATMT1-104 GY6 50cc 82 Links Timing Chain for 139QMB 139QMA Engine Scooters Mopeds ATV JONWAY,JMSTAR,ROKETA,SUNL,TANK,PEACE,TAOTAO,Dongfang,Kazuma,JCL,BMS Durable GY6 50cc 82-Link Timing Chain Strong impact resistance Good corrosion resistance Good abrasion resistance Stable transmission