harley 4dTECHNICAL SPECIFICATIONS. 1200.4D 2Ω Power @ 12.6V @ 1Ω: 4 x 300 W RMS Power @ 12.6V @ 2Ω: 4 x 165 W RMS Power @ 12.6V @ 4Ω: 4 x 91 W RMS Bridge Power @ 12.6V @Discover the Harley-Davidson X440. Prices start at Rs. 2,39,500. Explore the bike's specifications, features and colours and explore our events. Join the largest riding community in the world!