KOSO Variator Kit for 125cc – 150cc GY6 Scooters, ATVs, and Go KartsCOMPATIBILITY: BMS 150cc Scooters / Go KartsCoolster 150cc ATVs / Go KartsDiamo 150cc ScootersKymco 150cc ScootersLance 150cc Scooters PGO / Genuine 150cc ScootersRoketa 150cc Scooters / Go KartsTank 150cc ScootersTNG 150cc ScootersMany Other 150cc GY6 Based EnginesKoso High Performance Variator Set (FB224003) for 125cc and 150cc GY6 4-stroke engines. This variator disates heat better, has in increased CVT range and has an optimized ramp design for improved acceleration! **