APR Performance Brake Rotor Backing Plate W/Hose (CF-815654) _6061_Aluminum The difference comes in the

The difference comes in the removal of AWE's sound-cancelling 180 Technology rear-mufflers

After installation

Fitting - Tube Sleeve - 3 AN - 3/16 in Tube - Aluminum - Blue Anodized - Set of 6

durable upgrade designed to reduce weight while enhancing style and aerodynamics

APR Performance Brake Rotor Backing Plate W/Hose (CF-815654) _6061_Aluminum The difference comes in theThe 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 shop), the APR