2021 XT5 Sport DOHC, GAS, 4-Door, Sport Utility, 4WD, Heavy Duty Antilock Brakes (J56), 1st Design, With Mounting Bracket, To 09/01/2021. 2021 XT6 Sport DOHC, GAS, 4-Door, Sport Utility, 4WD, 1st Design, With Mounting Bracket, To 09/01/2021, Heavy Duty Antilock Brakes (J56).