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.

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#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.