FTI Transmissions Converters Automatic Transmission Seals and O-Rings Kit
About FTI Transmissions Converters
FTI Transmissions Converters, known in the performance world as FTI Performance, is a specialist in high-performance torque converters and racing automatic transmissions. Based in DeLand, Florida, the company has spent decades building drivetrain components for racers, from Sportsman classes up through Pro Modified, and its work extends to street machines, mud trucks and diesel pickups. Its products are built around a simple idea: the converter and transmission are not afterthoughts, but the parts that decide whether an engine's power actually reaches the pavement.
Torque Converters Built for Abuse
The heart of the lineup is the automatic transmission torque converter. FTI converters are furnace brazed, hand TIG welded on the internal fins and assembled with premium Torrington bearings, and many use billet lock-up covers or billet stators. Series are named for their purpose, from Street Brawler and Street Racer converters for weekend cars to the XPM Pro-Mod and TFX designs aimed at extreme-horsepower turbo applications. Because stall speed depends on camshaft, gearing, vehicle weight, tire size and transmission, matching the converter to the whole combination matters more than chasing a number.
Complete Transmissions and Internals
FTI builds race-ready units such as Powerglide, TH400, 700R4 and 4L80E transmissions, offered as a complete automatic transmission assembly or as kits that bundle a converter, valve body, fluid and other essentials. Inside, the automatic transmission valve body kit category covers performance and transbrake-style valve bodies that firm up shifts and give drag racers precise control. Supporting hardware includes billet input shafts, planetary gear kits, transbrake solenoids and deep aluminum pans that add fluid capacity and cooling.
Rebuild and Fluid Support
A performance transmission is only as good as its assembly and its fluid. Rebuilders will find sealing hardware such as an automatic transmission seals and O-rings kit useful when refreshing a unit, while race-formulated fluid and treatments in the transmission fluid additive category help manage the heat and shear that hard launches create.
What to Consider When Shopping
- Match converter diameter, stall speed and bolt circle to your engine, flexplate and transmission.
- Check horsepower ratings and intended use: street, bracket, drag, mud or diesel.
- Confirm whether a converter is suitable for use with a transbrake before ordering.
- Plan the full drivetrain, including cooler, pan, fluid and bellhousing, rather than a single part.
Whether you are freshening a street cruiser or building a transbrake-equipped drag car, FTI Transmissions Converters offers a focused, race-proven range for automatic drivetrains.