Our New General Purpose RTV-X900 is equipped with a 21.6 hp Kubota D902 3-cylinder diesel engine, exclusive Variable Hydro Transmission (VHT-X) and standard 4-Wheel Drive.Our New General Purpose RTV-X900 is equipped with a 21.6 horsepower Kubota D902 three cylinder diesel engine, exclusive Variable Hydro Transmission (VHT-X) and standard Four Wheel Drive.