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Replacement Diffusers

Product Image Product Name Price Buy Now
Akrapovic Carbon Fiber High Gloss Rear Diffuser Porsche 911 Turbo | S 991.2 17-18 Akrapovic Carbon Fiber High Gloss Rear Diffuser Porsche 911 Turbo | S 991.2 17-18  $2,687.70  Buy Now
Akrapovic Carbon Fiber Matte Rear Diffuser Porsche 911 Carrera S | 4 | 4S | GTS 991.2 17-18 Akrapovic Carbon Fiber Matte Rear Diffuser Porsche 911 Carrera S | 4 | 4S | GTS 991.2 17-18  $1,343.85  Buy Now
Akrapovic Carbon Fiber Matte Rear Diffuser Porsche 911 Turbo | S 991.2 17-18 Akrapovic Carbon Fiber Matte Rear Diffuser Porsche 911 Turbo | S 991.2 17-18  $2,354.71  Buy Now
Akrapovic Gloss Carbon Fiber Rear Diffuser BMW M2 F87 16-18 Akrapovic Gloss Carbon Fiber Rear Diffuser BMW M2 F87 16-18  $1,500.00  Buy Now
Akrapovic High Gloss Rear Carbon Diffuser BMW M3 F80 | M4 F82, F83 15-18 Akrapovic High Gloss Rear Carbon Diffuser BMW M3 F80 | M4 F82, F83 15-18  $1,500.00  Buy Now
Akrapovic Matte Carbon Fiber Rear Diffuser BMW M2 F87 16-18 Akrapovic Matte Carbon Fiber Rear Diffuser BMW M2 F87 16-18  $1,300.00  Buy Now
Akrapovic Matte Rear Carbon Diffuser BMW M3 F80 | M4 F82, F83 15-18 Akrapovic Matte Rear Carbon Diffuser BMW M3 F80 | M4 F82, F83 15-18  $1,500.00  Buy Now
Akrapovic Rear Carbon Fiber Diffuser BMW M3 F80 Sedan 3.0L Turbo 15-18 Akrapovic Rear Carbon Fiber Diffuser BMW M3 F80 Sedan 3.0L Turbo 15-18  $1,300.00  Buy Now
Akrapovic Rear Carbon Fiber Diffuser BMW M4 F82 Coupe 3.0L Turbo 15-18 Akrapovic Rear Carbon Fiber Diffuser BMW M4 F82 Coupe 3.0L Turbo 15-18  $1,300.00  Buy Now
Akrapovic Rear Carbon Fiber Diffuser BMW X5M 15-18 Akrapovic Rear Carbon Fiber Diffuser BMW X5M 15-18  $1,200.00  Buy Now
Akrapovic Rear Carbon Fiber Diffuser BMW X6M 15-18 Akrapovic Rear Carbon Fiber Diffuser BMW X6M 15-18  $1,200.00  Buy Now
Akrapovic Rear Carbon Fiber Diffuser Porsche  991 Turbo | Turbo S Akrapovic Rear Carbon Fiber Diffuser Porsche 991 Turbo | Turbo S  $1,900.00  Buy Now
Akrapovic Rear Carbon Fiber Diffuser Porsche GT3 991 14-16 Akrapovic Rear Carbon Fiber Diffuser Porsche GT3 991 14-16  $1,700.00  Buy Now
Akrapovic Rear Carbon Fiber Diffuser Volkswagen Golf VII GTI 14-15 Akrapovic Rear Carbon Fiber Diffuser Volkswagen Golf VII GTI 14-15  $1,300.00  Buy Now
Alpil Rear Diffuser Carbon Fiber  Audi A4 B8 09-16 Alpil Rear Diffuser Carbon Fiber Audi A4 B8 09-16  $541.96  Buy Now
Alpil Rear Diffuser Carbon Fiber Audi TT MK2 8J 08-14 Alpil Rear Diffuser Carbon Fiber Audi TT MK2 8J 08-14  $541.96  Buy Now
Alpil Rear Diffuser Carbon Fiber Volkwagen Golf MK7 Alpil Rear Diffuser Carbon Fiber Volkwagen Golf MK7  $885.20  Buy Now
Alpil Rear Diffuser Carbon Fiber Volkwagen Golf R 15-17 Alpil Rear Diffuser Carbon Fiber Volkwagen Golf R 15-17  $885.20  Buy Now
Alpil Rear Diffuser Carbon Volkwagen GTI MK7 Alpil Rear Diffuser Carbon Volkwagen GTI MK7  $885.20  Buy Now
Alpil Rear Diffuser FRP Audi A4 B8 09-16 Alpil Rear Diffuser FRP Audi A4 B8 09-16  $379.37  Buy Now
Alpil Rear Diffuser FRP Audi TT MK2 8J 08-14 Alpil Rear Diffuser FRP Audi TT MK2 8J 08-14  $379.37  Buy Now
Alpil Rear Diffuser FRP Volkwagen Golf MK7 Alpil Rear Diffuser FRP Volkwagen Golf MK7  $614.22  Buy Now
Alpil Rear Diffuser FRP Volkwagen Golf R 15-17 Alpil Rear Diffuser FRP Volkwagen Golf R 15-17  $614.22  Buy Now
Alpil Rear Diffuser FRP Volkwagen Golf R32 06-08 Alpil Rear Diffuser FRP Volkwagen Golf R32 06-08  $541.96  Buy Now
Alpil Rear Diffuser FRP Volkwagen Golf R32 06-08 Alpil Rear Diffuser FRP Volkwagen Golf R32 06-08  $379.37  Buy Now
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In automotive terms, a diffuser is a shaped section of the car’s underbody, which improves the vehicle’s aerodynamic properties. This happens by enhancing the transition between the high-velocity airflow underneath the car and the freestream airflow of the ambient atmosphere. In simpler terms, the purpose of a rear diffuser is to reduce air turbulence as your car drives at high speeds.

By decreasing drag, rear diffusers make your car more stable at high speeds and reduce the amount of wind resistance it must overcome. Less wind resistance means that your vehicle will be able to utilize its existing horsepower and torque more efficiently. A rear diffuser also adds style to your car and helps it stand out from the crowd. If you have a rear wing on your car, it also affects the diffuser. When the rear wing is mounted low and close to the diffuser, the low pressure under the wing helps suck air through the diffuser.

As the front of a vehicle slows down the air without a diffuser, this is the ideal place to install an inlet. A splitter is commonly used and serves to increase the amount of downforce (lift inverted) at the front of the car. The airstream is brought to stagnation above the splitter by an air dam, which results in an area of high pressure. Below the splitter, the air is redirected away from the stagnation zone and accelerated, causing the pressure to drop. The decrease in pressure in combination with the high pressure over the splitter area creates downforce. Consequently, the larger the area of the splitter, the more downforce is generated.

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