APR Performance Brake Cooling Ducts for 2018-2021 Subaru WRX STI(CF-801850) _155.2_/_156.5 This introduces additional unnecessary friction

This introduces additional unnecessary friction into the steering system which has a knock on detrimental effect on the vehicles handling characteristics

This IRS suspension systems suffers from uneven rear tire wear especially when lowered or when towing

and Ford F-150 V8 2011-17 (7-300)

Designed for applications where no tail pipe or turn down is needed

APR Performance Brake Cooling Ducts for 2018-2021 Subaru WRX STI(CF-801850) _155.2_/_156.5 This introduces additional unnecessary frictionCF 801850 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 (not included purchase hoses from your favorite racing supply