21- Ford F150 3.5L Cat Back Exhaust System Midpipes Exhaust System - Sport -

Exhaust System - Sport - Cat-Back - 3 in Diameter - Single Side Exit - Dual 4 in Black Tips - Stainless - Natural - GM LS-Series - GM Fullsize SUV 2015-20 - Kit

Air from the secondary inlet passes through custom-molded ducting

Resonator - HP-2 - 2 in Center Inlet - 2 in Center Outlet - 12 x 5 x 4 in Oval Body - 18 in Long - Stainless - Natural - Each

From the free app

This insulating characteristic and rapid cooling after hard acceleration reduce heat in the air intake tract when compared to air intakes constructed of aluminum or other metals

21- Ford F150 3.5L Cat Back Exhaust System Midpipes Exhaust System - Sport -Exhaust System Sport Cat Back 3 in Diameter 4 in Tips Stainless Natural Ford Ecoboost V6 Ford Fullsize Truck 2021 22 Kit