American Powertrain Is the World’s Largest TREMEC Dealer and Industry Leader in Vehicle Specific TREMEC Overdrive Conversion Kits for Musclecars, Trucks & Hot Rods

• 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.

American Powertrain ProFit TREMEC TKX 5-Speed Kits

Kit Includes*

• TREMEC TKX 5 Speed Transmission
• 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 
• Pilot Bearing 
• Reverse Light Harness 
• Speedometer Conversion – Choice of mechanical or electronic
• Shifter Knob
• Hardware
• Instructions,  2-year REAL Warranty and Tech Support
• 0% Financing Available for 6 months. Ask your salesperson. 

American Powertrain TREMEC Magnum 6-Speed Pro Fit Kits

Kit Includes*

• TREMEC Magnum 6 Speed Transmission
• 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 
• Pilot Bearing
• Reverse Light Harness 
• Reverse Lock-out Harness 
• Speedometer Conversion – Choice of mechanical or electronic
• Shifter Knob
• Hardware
• Instructions, 2-year REAL Warranty and Tech Support
• 0% Financing Available for 6 months. Ask your salesperson. 

*Transmission Kit contents vary by model

TREMEC TR4050 5 Speed

Take your truck’s performance to the next level with the TREMEC TR-4050 5-speed transmission. Perfect for classic and modern trucks, this robust transmission offers the durability and gearing needed for off-road adventures, towing, and everyday driving.

With its smooth shifting and overdrive capability, the TR-4050 brings a modern driving feel to your vintage Chevy, GMC, or Dodge truck. Whether you’re upgrading a Squarebody, OBS, or any other classic truck, our TR-4050 kits are designed for easy installation and optimal performance. Explore our range of TR-4050 options to find the perfect match for your build and enjoy the best in reliability and drivability.

TREMEC T5 5 Speed Kits

TREMEC T5 5 speed overdrive transmission conversion kits

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