APR Performance - BMW F82 M4 Side Rocker Extension 2015-Up (FS-830402) z4sbvc the air molecules in the

the air molecules in the rear of the car get disrupted causing a vacuum of low pressure air

For use with A'PEXi Power Intake Kit P/N: 507-M005 (sold separately)

N1 Turbo Canister

Each Rear Deck Spoiler is finished with UV-resistant clear-coat paint for resistance against various environmental conditions (take care of this as you would take care of your vehicle's paint finish - polish then coat with good-quality wax or synthetic protectant)

- High endurance hybrid silencer of patent technology

APR Performance - BMW F82 M4 Side Rocker Extension 2015-Up (FS-830402) z4sbvc the air molecules in the***Fits F82 M4 Only*** APR Side Rocker Extensions are the next step to help aerodynamically tune the handling of a car. Made of lightweight and durable carbon fiber composites, APR Side Rocker Extensions help reduce lift at high speeds by preventing air at the sides of the car from rolling underneath the car. The reduced lift helps to stabilize the car during high speed cornering and helps to increase traction for faster lap times. Features: Carbon