Carbon Fiber Subaru STI Brake Cooling Kit 2018-2021 BMW Installing the rear body plate

Installing the rear body plate and rear wing

Oxygen Content = 6

Proper merge collector for high flow and zero drone4 Large 2 3/8” primary section pipes for unrestricted exhaust flow

Combined with approximately +40 mm front and +50 mm rear fender extensions

Featuring double-walled

Carbon Fiber Subaru STI Brake Cooling Kit 2018-2021 BMW Installing the rear body plate****STI Only*** The APR Brake Cooling Ducts are aerodynamically optimized to "funnel in" massive amounts of air. Also known as the venturi effect, when the vehicle speed increases, this funneled in air increases in both pressure and velocity as it passes from the larger frontal area into the smaller pipe section of the brake duct. When matched with appropriate high temperature air duct hoses, the APR Brake Cooling Ducts will help to channel in large