Our inventory of Twin Disc marine gearboxes includes a full range of new and remanufactured models designed for reliability, smooth shifting, and long service life in demanding marine environments. From the proven MG Standard Series to the advanced MGX QuickShift and MGE Hybrid transmissions, Twin Disc gearboxes deliver precise power transfer and efficient performance for commercial, industrial, and pleasure craft applications. Each unit is built to OEM specifications and supported with expert parts sourcing, ensuring your vessel stays operational and your downtime stays minimal.