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Official Web Site of Transgo®, manufacturer of the Performance Shift Kit®. Transgo® distributes performance products ,corrections and fixes for automatic transmissions.
Transgo® customer support may be reached Monday through Friday by phone (626) 443-7451.  
You may purchase Transgo products through one of our Distributors or by requesting them from your local auto repair shop.
Transgo® manufactures Performance Shift Kits® for the following General Motors transmission units: Turbo Hydramatic, 350, 400, 200-4R, 700-R4,
4L60E, 4L80E, and Powerglide. Transgo® Performance Shift Kits® are available for the following Ford transmission units: AOD, AODE, 4R7OW, C4, C6, E4OD, 4R100, and FMX.
Transgo® Performance Shift Kits® are available for the following Chrysler transmission units: Overdrive Torqueflite, A500, A518, A618 Diesel TFOD.