Transmission Kits

Find Parts For Your Vehicle

American Powertrain Profit Installation Systems

Professional Fit

Overdrive manual transmissions specially prepped to fit your car with a perfect fit.

Complete Kits

All the parts you need for installation in your muscle car, street rod, truck or sports car

Superior Performance

Quick shifts and big power ratings

Quiet Cruising

Great cruising RPMS – 18-50% drop in highway RPMs

Increased Fuel Economy

Great fuel mileage with 30-50% better on average

0% Financing Available

No interest for 6 months. Ask your salesperson.

Made In USA

Installation parts made in the USA.

Check out our reviews on Google and Better Business Bureau

#SavetheStick Stimulus Sale going on now! We are offering $250 off all Pro-Fit kits PLUS Free Shipping on TKO 5-speed Pro-Fit kits, $100 off freight for 6-speed Pro-Fit kits and get a free t-shirt! Call in orders only. Don’t forget we offer 0% Financing for 6 months and a layaway program! Ask your salesperson for details. Good till April 30th.

American Powertrain is the world’s largest TREMEC dealer and the leader in model specific overdrive transmission installation systems.

American Powertrain ProFit Transmission Kits

ProFit 5-Speed Kit

Featuring the TREMEC TKO 5-speed specially prepped for your model.

Kit Includes*

Revolution Shifter Mechanism – stock shift position for your project
Driveshaft – Seamless DOM w/solid u-joints (some of competition does not offer a driveshaft!)
X-Factor Cross Member – Light, strong modular aluminum
Trans Mount – modern poly or ISO-X ballistic
Pilot Bearing – stainless bearings
Reverse Light Harness – Weatherseal molded rubber
Speedometer Conversion – Choice of mechanical or electronic
Shifter Knob
Hardware
Instructions, 2-year REAL Warranty and Customer First Extended Hours Tech Support
0% Financing Available for 6 months. Ask your salesperson.

Shop Now

*Transmission Kit contents vary by model

ProFit 6-Speed Kit

Features TREMEC Magnum 6-speed, specially prepped for you model

Kit Includes*

Revolution Shifter Mechanism – stock shift position for your project
Driveshaft – Seamless DOM w/solid u-joints
X-Factor Cross Member – Light, strong modular aluminum
Trans Mount – modern poly or ISO-X ballistic
Pilot Bearing – stainless bearings
Reverse Light Harness – Weatherpac plug and play
Reverse Lock-out Harness – Weatherpac plug and play
Speedometer Conversion – Choice of mechanical or electronic
Shifter Knob
Hardware
Instructions, 2-year REAL Warranty and Customer First Extended Hours Tech Support
0% Financing Available for 6 months. Ask your salesperson.

Shop Now

*Transmission Kit contents vary by model

ProFit 4-Speed Automatic Kit

Features hand built 4-speed transmission, specially prepped for your model

Kit Includes*

Shifter Linkage – Converts your existing linkage to 4-speed for stock look
Torque Converter – Lock-up with choice of stall speed
Flexplate – Balanced SFI Steel
Driveshaft – Seamless DOM w/solid u-joints
X-Factor Cross Member – Light, strong modular aluminum
Trans Mount –AP ISO-X ballistic
Carb Linkage – Specify carb type when ordering
TV Cable – Fully adjustable
Converter Cover – Choice of black or polished
Speedometer Conversion – Calibrated
Locking Dip Stick
Hardware
Instructions, 2- Year REAL Warranty and Customer First Extended Hours Tech Support
0% Financing Available for 6 months. Ask your salesperson.

Shop Now

*Transmission Kit contents vary by model

Transmission Kits

Find Parts For Your Vehicle

American Powertrain Profit Installation Systems

Professional Fit

Complete Kits

Superior Performance

Quiet Cruising

Increased Fuel Economy

0% Financing Available

Made In USA

Check out our reviews on Google and Better Business Bureau

American Powertrain ProFit Transmission Kits

ProFit 5-Speed Kit

Featuring the TREMEC TKO 5-speed specially prepped for your model.

Kit Includes*

ProFit 6-Speed Kit

Features TREMEC Magnum 6-speed, specially prepped for you model

Kit Includes*

ProFit 4-Speed Automatic Kit

Features hand built 4-speed transmission, specially prepped for your model

Kit Includes*

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