Feature:1. Wide Application: Replacement for GY6 50cc 139QMB Based Engine, replacement for Kinroad, replacement for Twister Hammerhead, replacement for Carter Talon and much more models.2. Copper Core Roller: The roller shell is made of high quality nylon material with excellent high temperature and wear resistant, and the 6.5 gram weight will bring you balanced performance.3. Red Variator Slides: The racing variator slides has been already installed, comes with red color and made of the same nylon as the roller weights, abrasion resistant and have a long life.4. Heat Sinking Variator Face: Specially designed for better operation and heat dissipation; the roller grooves design can improve the accelerating time and prevent too much loss on the engine torque value.5. Hardening Ramp Plate: The variator ramp plate adopts surface hardening treatment which can make your variator support more power. And the main metal parts have been processed by anti rust treatment for maximum durability.Specification:Item Type: Racing Variator KitMaterial: Copper + Nylon + Aluminium AlloyFitment: 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 BladeReplacement for KinroadReplacement for Twister HammerheadReplacement for Carter TalonReplacement for DazonReplacement for RoketaReplacement for DUNEReplacement for BajaReplacement for KPX,Replacement for SUNLReplacement for AvantiReplacement for Bam XReplacement for BaotianReplacement for BashanReplacement for BMSReplacement for BMXReplacement for BoreemReplacement for EagleReplacement for CF MotoReplacement for Cross RunnerReplacement for Cool SportsReplacement for DiamoReplacement for E TonReplacement for EagleReplacement for FushinReplacement for FlyReplacement for GMIReplacement for HensimReplacement for Hi-birdReplacement for BajaReplacement for Ice BearReplacement for JackelReplacement for Jet MotoReplacement for JCLReplacement for TaotaoReplacement for PeaceReplacement for JM StarReplacement for JonwayReplacement for KazumaReplacement for KeewayReplacement for KMDReplacement for KymcoReplacement for LanceReplacement for LifanReplacement for LinhaiReplacement for LoncinReplacement for LongboReplacement for FuxinReplacement for MaxtradeReplacement for MDIReplacement for MeitienReplacement for MotofinoReplacement for MotorinoReplacement for NSTReplacement for PanterraReplacement for PantherReplacement for Qlink YibenReplacement for Red StreakReplacement for RedcatReplacement for RoketaReplacement for SchwinnReplacement for SeasengReplacement for StradaReplacement for SYMReplacement for TankReplacement for TerminatorReplacement for TomberlinReplacement for TNGReplacement for United MotorsReplacement for VerucciReplacement for WildfireReplacement for X-TremeReplacement for YamatiReplacement for ZNENReplacement for GeelyReplacement for Wangye and etc..Package List:2 x Cover1 x Sleeve6 x Roller