the 2022 model year, Dodge eliminated the six-speed manual gearbox from the 717-horsepower Challenger SRT Hellcat. 

For lower Hemi Challenger models, the Tremec TR-6060 gearbox was still available; 

the six-speed was never available for higher Redeye trims.

The carmaker clarified the situation towards the end of 2021 and promised that the trim 

will reappear in the future, explaining that it was necessary to recalibrate the 

Powertrain Control Module for the stick-shift supercharged 6.2-liter V8.