Roush Performance F150 Transmission by year

Year	Transmission
2020	10-speed automatic
2019	10-speed automatic
2018	10-speed automatic
2017	6-speed automatic
2016	6-speed automatic
2014	6-speed automatic
2008	4-speed automatic
2007	4-speed automatic
2006	4-speed automatic

Source: U.S. EPA / DOE fuel economy data (fueleconomy.gov).