Transmissions & Drivetrain

Circle D Pro Series 3200-3400 Stall Speed LS 4L60 258mm Torque Converter   Pro Series Billet Torque Converter Converter Diameter - 258mm - 10 1/4" Available in stall speeds from 2800 - 3700 rpm Furnace Brazed  Hand TIG...

Circle D Pro Series 2800-3000 Stall Speed LS 4L60 258mm Torque Converter  Pro Series Billet Torque Converter Converter Diameter - 258mm - 10 1/4" Available in stall speeds from 2800 - 3700 rpm Furnace Brazed  Hand TIG Welded...

Circle D Pro Series 3000-3200 Stall Speed LS 4L60 265mm Torque Converter    Pro Series Billet Torque Converter Converter Diameter - 265mm - 10 1/2" Available in stall speeds from 2500 - 3400 rpm Furnace Brazed  Hand TIG...

Circle D Pro Series 2800-3000 Stall Speed LS 4L60 265mm Torque Converter   Pro Series Billet Torque Converter Converter Diameter - 265mm - 10 1/2" Available in stall speeds from 2500 - 3400 rpm Furnace Brazed  Hand TIG...

Circle D Pro Series LS 4L60 258mm Torque Converter   Pro Series Billet Torque Converter Converter Diameter - 258mm - 10 1/4" Available in stall speeds from 2800 - 3700 rpm Furnace Brazed  Hand TIG Welded Turbine...

Circle D Pro Series 2500-2700 Stall Speed LS 4L60 265mm Torque Converter  Pro Series Billet Torque Converter Converter Diameter - 265mm - 10 1/2" Available in stall speeds from 2500 - 3400 rpm Furnace Brazed  Hand TIG...

Circle D HP Series 2400-2600 Stall Speed LS 4L60 300mm Torque Converter  Great option for Daily Driver vehicle looking for a little more stall. Will drive 99% stock under light throttle. Converter diameter: 300mm - 12" Stall speeds 1800-3200Hand...

Circle D HP Series 1800-2000 Stall Speed LS 4L60 300mm Torque Converter Great option for Daily Driver vehicle looking for a little more stall. Will drive 99% stock under light throttle. Converter diameter: 300mm - 12" Stall speeds 1800-3200Hand TIG...

Circle D HP Series 1800-2000 Stall Speed LS 4L60 300mm Torque Converter Great option for Daily Driver vehicle looking for a little more stall. Will drive 99% stock under light throttle. Converter diameter: 300mm - 12" Stall speeds 1800-3200Hand TIG...

FiTech Go Shift Transmission Controller for GM 4L60/65/80/85E & Ford 4R70W, AODE FiTech Fuel Injection is introducing the all new Go EFI GO SHIFT Trans Control. If you plan on upgrading your transmission and you’ re having trouble with the...

PCS GM 6L80/6L90 Transmission Control Module TCM-2650 This TCM is designed for retro-fitting the GM 6L80/90in applications that DO NOT have the means to control the transmission. Works great for LS swaps that are using aftermarket stand alone EFI...

MSD Atomic Transmission Controller 2760 MSD Stand Alone 4-Speed Automatic Electronic Transmission Controller. Take the mystery out of programming your transmission with this easy to use transmission controller. It allows adjustments such as...