Specification: Item Type: Racing Variator Kit Material: Copper + Nylon + Aluminium Alloy Fitment: Replacement for GY6 50cc 139QMB Based Engine, it is a horizontal single cylinder, four stroke, forced air cooled engine has a CTV automatic transmission and is used on many Chinese scooters, ATVs, go karts and mopeds. Also named replacement for GY6 80cc 139QMA 1P39QMB 1P39QMA as well as 147QMD. Replacement for Blade Replacement for Kinroad Replacement for Hammerhead Replacement for Carter Replacement for Dazon Replacement for Roketa Replacement for DUNE Replacement for Baja Replacement for KPX, Replacement for SUNL Replacement for Avanti Replacement for Bam X Replacement for Baotian Replacement for Bashan Replacement for BMS Replacement for BMX Replacement for Boreem Replacement for Eagle Replacement for CF Moto Replacement for Runner Replacement for Cool Sports Replacement for Diamo Replacement for E Ton Replacement for Eagle Replacement for Fushin Replacement for Fly Replacement for GMI Replacement for Hensim Replacement for Hi-bird Replacement for Baja Replacement for Ice Bear Replacement for Jackel Replacement for Jet Moto Replacement for JCL Replacement for Taotao Replacement for Peace Replacement for JM Star Replacement for Jonway Replacement for Kazuma Replacement for Keeway Replacement for KMD Replacement for Kymco Replacement for Lance Replacement for Lifan Replacement for Linhai Replacement for Loncin Replacement for Longbo Replacement for Fuxin Replacement for Maxtrade Replacement for MDI Replacement for Meitien Replacement for Motofino Replacement for Motorino Replacement for NST Replacement for Panterra Replacement for Panther Replacement for Qlink Yiben Replacement for Red Streak Replacement for Redcat Replacement for Roketa