Drivetrain System International (abbreviated as DSI), and previously operating as BorgWarner Australia, BTR, and ION is an Australian drivetrain constructor and engineering consultancy based in Scoresby, Victoria. At its previous manufacturing facilities in Albury, New South Wales, it produced drivetrains for Ford, Maserati, Chrysler, Geely and SsangYong. The company has also produced gearboxes for the Mahindra Scorpio.