
EasyFit Transmission and Installation Kit for 1955-1957 Chevy Tri-Five Bel Air, Front-Shift Shifter
Tri-Five Bel Air
Breakdown of Included Items for Silver Sport Transmissions EFKBMSTKX
Silver Sport Transmissions EFKBMSTKX Features:
- The Silver Sport Transmissions TKX has a compact, rounded case for perfect fitment even in tight transmission tunnels
- Capable of up to 7,500 rpm shift points
- Allows low RPM cruising for increased fuel economy
- Interchangeable with mechanical or hydraulic clutch actuators
- The STX shifter is in the front-shift location suitable for bucket seats
- Heavy-duty needle roller-type pilot bearing with lube seal
- Rubber transmission isolator mount for vibration reduction
- Mechanical and electronic compatible speedometer connection
- Gear Ratios: 2.87, 1.89, 1.28, 1.00, 0.68, 2.56R
- Input Shaft Diameter: 1.125 in.
- Input Shaft Quantity: 26
- Output Shaft Quantity: 31
Your One-Stop-Shop for Transmission Conversion
Silver Sport Transmissions EasyFit Kits are a convenient and cost-effective solution for upgrading outdated factory transmissions to modern overdrive. Each kit features a Silver Sport Transmissions TKX paired with vehicle-specific components and necessary items to take out the guesswork for installation. Available for popular GM, Ford, or Mopar applications.
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If you’re upgrading your classic or muscle car to a modern 5-speed overdrive setup, the Silver Sport EasyFit kit makes it far easier. These kits are designed to deliver a tkx transmission kit that’s tailored to your specific vehicle. You get a matched transmission plus the installation hardware and brackets needed for a clean, reliable swap.
The core of each kit is the Tremec TKX manual transmission, rated for up to 600 lb-ft of torque and built to handle street and occasional strip use. The kits include a short-throw STX shifter (or console plate, depending on the variant), transmission mount, necessary hardware, pilot bushing, reverse light wiring, and a precision crossmember. The design ensures shifter position is spot on—no guesswork or long hours mock-fitting parts.
One of the most compelling benefits is how the kits reduce complexity and error. You don’t have to source mismatched brackets or adapters—everything is engineered to align perfectly with your car’s chassis and driveline layout. That kind of integration saves time and helps avoid costly mistakes.
On the road, an upgraded tremec tkx kit gives you overdrive capability, which lowers engine RPM at highway speeds. That means reduced engine wear, quieter cruising, and better fuel economy. These advantages matter most on longer drives or when street comfort is a priority.
Whether you’re doing a classic Chevy, Ford, Mopar, or even a hot rod, the EasyFit TKX kits cover many applications. Pick the version for your car, bolt it in, hook up your clutch and driveshaft, and you’ll gain modern shifting and performance in one package.

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