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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We are offering $250 off all our kits (must include transmission). On top of that we are offering free shipping on all TKO 5-speed Pro-fit kits (lower 48 only) $100 off freight charges for 6-speed Pro-fit kits and a free T-shirt. Now till June 30th! Don’t forget we have 0% Financing for 6 months as well. Ask your salesperson for more (W.A.C). Plus, we have a layaway program!

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