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Upgrade your BMW 4 Series with our carbon fibre M Performance side skirts
Constructed with high quality carbon fibre with UV protectant clear coat to prevent yellowing and maintain its high gloss finish
Click here for high resolution install photos
Every APR Front Wind Splitter completely covers the entire area below a cars front bumper
Carbon Fiber Wind Splitter/Undertray
Toyota Supra A90/91 Rear Diffuser 2020-2023 2011-2014 Challenger SRT-8 Upgrade your BMW 4 SeriesDiffusers work in conjunction with other aerodynamic components of a car to help produce downforce. Because a car displaces air as it moves forward, the air molecules in the rear of the car get disrupted causing a vacuum of low pressure air. To help channel the high speed air flow coming from underneath the car, diffusers redirects the high speed air flow to transition smoothly transition into the low pressure vacuum in the rear. This encourages a
US$ 69.95
US$ 59.95
US$ 35.00
