Tremec T-56 Magnum XL 6-Speed Manual Transmission

The American Powertrain Tremec T-56 Magnum XL manual transmission is purpose-built for the 2005 and later Ford Mustang, offering enhanced performance and durability. It is engineered to withstand up to 700 lbs-ft of torque, making it suitable for high-performance applications and significant engine upgrades. The transmission features gears with increased face widths and a 2-piece laser-beam welded construction for precise control over tooth angles, pitch, and alignment. Additional benefits include a bolstered one-piece countershaft to resist distortion, a stronger input shaft, new synchronizers with fine-tooth angles for reduced shift effort and increased shift speed, redesigned shift forks, and an extensively modified transmission case to prevent leaks and increase overall power-handling capabilities. The specific gear ratios include 2.66 for 1st gear and 0.50 for 6th gear, balancing rapid acceleration with efficient high-speed cruising. The input shaft has a diameter of 1.125 inches with 26 splines, and the output shaft has 31 splines. Installation of this Tremec T-56 Magnum XL transmission is estimated to take approximately 6 hours and requires light to moderate mechanical skill. The package includes the transmission, shifter assembly, and hardware. This transmission is specifically designed to fit 2005-2026 Mustang GT, GT350, and Dark Horse models, as well as 2007-2014 Mustang GT500 models.