ISR 3" Turbine Outlet O2 Housing - Nissan SR20DET S13 T25/S14 T28 or GT Series Turbo ISR Performance brings you the first True 3" Turbo outlet. Every other turbine outlet necks down, This new design from ISR Is a higher flowing true 3" outlet. Turbo Outlets increase exhaust flow and free up Horsepower. Great bang for the buck upgrade. This unit does require that you re-use your OEM turbine housing studs/nuts.
** All ISR Performance Products are Designed for Off Road Use Only **