The MBT12B4 MotoBatt is no ordinary replacement battery. It comes with an industry leading 2 year replacement warranty and uses more lead per cell than most leading battery manufacturers. The MBT12B4 replaces the YT12B-BS and YT12B-4 battery and is designed to meet or exceed OEM specifications. This premium sealed AGM battery will arrive fully charged and need only be connected to your machine. Enjoy the assurance of a two year hassle free replacement warranty as you ride!