American Powertrain is pleased to introduce their new Pro-Fit 5-Speed system for classic Mopar B-body cars featuring the all-new TREMEC TKX 5-Speed. The TKX Pro-Fit fits all the vintage Mopar B-bodies. Vehicles like the Charger, Coronet, GTX, Road Runner, Satellite, Belvedere, Super Bee, and Super Bird. It fits like the original A833 manual transmission. It has the correct shift position and tunnel fit. That’s right, the new TKX features a streamlined case so there is zero need for tunnel modifications. American Powertrain has modified the TKX to mimic the stock 4-speed shifter location. They also come with a replica pistol grip shifter handle and shift pattern plates that help finish off that factory look and feel.

The new Pro-Fit 5-speed system features the new TREMEC TKX transmission with 600 lb-ft of torque capacity that shifts up to 8,000 rpm. This system comes with American Powertrain’s patented driveshaft yoke, bolt-in crossmember that will work with the factory torsion bar mount, and a brand new DOM driveshaft. The Pro-Fit kits are covered by American Powertrain’s two-year warranty, as well as, availability to their comprehensive tech support. These systems will be available for shipping in early Spring.