The TREMEC TKX Transmission: Unpacking the Features, Benefits, and Capabilities

The world of manual transmissions is always evolving, and TREMEC, a well-respected name in the industry, has consistently been at the forefront of innovation. Their TKX transmission is a testament to this tradition. It is one of the most advanced 5-speed manual transmissions available for both classic and contemporary vehicles. If you’re in the market or just curious, here’s everything you need to know about the TREMEC TKX transmission.

1. Introduction to the TKX

The TREMEC TKX is a 5-speed rear-wheel-drive manual transmission, designed as an upgrade for those who demand the very best in their vehicles. It’s especially popular among enthusiasts looking to retrofit their classic cars but is equally suited to modern applications.

2. Compact Design

One of the standout features of the TKX is its compact design, which allows for an easier fit in a wide variety of applications. The unique layout helps eliminate the need for any tunnel modifications, saving both time and money.

3. TKX Strength

Despite its compact form factor, the TKX boasts of impressive durability:

  • Horsepower Capability: The transmission is rated for a continuous 600 lb-ft of torque.
  • RPM Capability: It’s designed to handle up to 7,500 RPM, making it ideal for high-revving applications.

4. Multiple Shift Locations

Flexibility is at the heart of the TKX design. It offers multiple shifter locations, ensuring the perfect fit and ergonomic comfort for a wide range of vehicles. This makes it an excellent choice for custom projects where optimal driver comfort is paramount.

5. End-loading Design

The TKX comes with an end-loading design, which means fewer components and a more straightforward assembly. This design choice also contributes to its overall strength and durability.

6. Fast and Precise Shifts

Equipped with a finely tuned gear synchronization system, the TKX ensures quick and smooth shifts, enhancing the driving experience and minimizing gear grinding.

7. Increased Gear Widths

One of the features that boost the transmission’s torque capacity is the increased gear widths. This design enhancement ensures the gears can handle the power and provide a long service life.

8. Noise Reduction

Nobody wants a noisy transmission. TREMEC has taken extra steps to ensure the TKX operates quietly, utilizing advanced gear geometry and a special surface finishing process.

9. Wide Gear Ratio Options

Depending on your application, the TKX offers multiple gear ratio options. This ensures that you can find a suitable match for your vehicle’s powerband and desired performance characteristics.

Part NumberStyleTorque RatingInput Spline1st2nd3rd4th5thR
TCET18086Ford600 lb-ft103.271.981.3410.723
TCET18084Ford600 lb-ft262.871.891.2810.812.56
TCET17765Ford600 lb-ft262.871.891.2810.682.56
TCET18085Ford600 lb-ft263.271.981.3410.723
TCET18083GM600 lb-ft263.271.981.3410.723
TCET17722GM600 lb-ft262.871.891.2810.812.56
TCET17805GM600 lb-ft262.871.891.2810.682.56

10. Superior Materials and Construction

Only the best materials are used in the construction of the TKX. From high-quality steel to the latest in gear-cutting technology, TREMEC ensures every transmission is built to last.


In the world of manual transmissions, the TREMEC TKX stands out as a modern marvel. Whether you’re retrofitting a classic car or outfitting a contemporary vehicle, this transmission promises unmatched performance, durability, and flexibility. So, if you’re considering an upgrade, the TKX should definitely be on your radar!

Fill Out The Form Below To Get A TKX Conversion Kit Quote

Request A Quote

Quote page

  • Contact Information

    Please provide us your contact information so we can best reach you.
  • Shipping Information

    To prepare an accurate quote including shipping, we require the expected shipping address.
  • Vehicle Information

    Please provide your vehicle information that you plan to purchase and install American Powertrain products We encourage you to provide accurate vehicle information to assist in an accurate quote. If you need help, call us or use our Speed Analyzer.
  • Please enter a number from 10 to 99.
  • Select the type of transmission for your project
  • Almost There!

    Please take a moment to answer one more question and provide any additional details.