magnum slotTyco Magnum 440: The orinal Tyco Magnum 440 chassis was superseded by the Tyco Magnum 440x2. Most parts, aside from the chassis and rear traction magnet, are interchangeable. Body shells for the Tyco Magnum 440 chassisThe rugged, hh performance Magnum series open slot radars use familiar radar technology and offer enhanced target tracking and reliable performance.