Will not fit 2015, 2016, 2017 Mustang V6s: this pair of rear rotors will only fit 2015, 2016, 2017, 2018, 2019 Mustang GTs and EcoBoosts with Premium Brakes. They will not fit 2015, 2016, 2017 Mustang V6s or 2.3L EcoBoosts with base brakes.