Ford Racing Tremec 6-Speed Transmission (2.66 1ST Gear/26 Spline)

Built with 4615 steel gears, this Ford Performance by TREMEC 6-speed manual transmission is a robust upgrade for your 1999-2004 Ford Mustang. It features a 2.66 ratio in first gear, which is a popular choice for improving off-the-line acceleration compared to stock transmissions. This unit is based on the same heavy-duty Tremec HD 5-speed manual transmissions that were originally used in the 1995 Mustang Cobra 'R' models equipped with the 351 5.8L engines, indicating its strong heritage and capability.

The transmission assembly includes a billet aluminum shifter for a solid feel and improved durability. The 26 spline count is a key specification for ensuring proper engagement with your clutch and driveshaft. This transmission is designed to work with SBF 4.6L SOHC/DOHC and 5.0L Ti-VCT engines, making it a direct fit for the specified Mustang models. Its construction with quality materials means it's built to handle increased power and torque, offering a significant improvement in performance and driving experience.

When installing this transmission, you'll want to ensure you have all the necessary supporting components, such as a compatible clutch kit, flywheel, and potentially a new driveshaft or transmission mount, depending on your specific setup. Refer to the manufacturer's installation instructions for detailed guidance on proper fitment and setup to get the most out of this performance transmission.