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Replacement Diffusers

Product Image Product Name Price Buy Now
Arkym Aerosport Single Side Carbon Rear Diff. Convertible BMW M3 E93 08-13 Arkym Aerosport Single Side Carbon Rear Diff. Convertible BMW M3 E93 08-13  $949.00  Buy Now
Arkym Aerosport Single Side Carbon Rear Diff. Coupe BMW 335i E92 06-11 Arkym Aerosport Single Side Carbon Rear Diff. Coupe BMW 335i E92 06-11  $899.00  Buy Now
Arkym Aerosport Single Side Carbon Rear Diff. Coupe BMW M3 E92 08-13 Arkym Aerosport Single Side Carbon Rear Diff. Coupe BMW M3 E92 08-13  $949.00  Buy Now
Arkym Aerosport Single Side Carbon Rear Diff. Sedan BMW M3 E90 08-13 Arkym Aerosport Single Side Carbon Rear Diff. Sedan BMW M3 E90 08-13  $949.00  Buy Now
Arkym Aerosport Single Side Carbon Rear Diffuser Sedan (2x2) Saloon BMW  5-Series M-Sport F10 09-13 Arkym Aerosport Single Side Carbon Rear Diffuser Sedan (2x2) Saloon BMW 5-Series M-Sport F10 09-13  $999.00  Buy Now
Arkym Aerosport Single Side Carbon Rear Diffuser Sedan QUAD Saloon BMW  5-Series M-Sport F10 09-13 Arkym Aerosport Single Side Carbon Rear Diffuser Sedan QUAD Saloon BMW 5-Series M-Sport F10 09-13  $999.00  Buy Now
ARMYTRIX Rear Diffuser For Quad Tips Audi A4 2.0L TFSI B9 16-18 ARMYTRIX Rear Diffuser For Quad Tips Audi A4 2.0L TFSI B9 16-18  $490.00  Buy Now
ARMYTRIX Rear Diffuser For Quad Tips Audi A4 Avant 2.0L TFSI B9 16-17 ARMYTRIX Rear Diffuser For Quad Tips Audi A4 Avant 2.0L TFSI B9 16-17  $490.00  Buy Now
Artisan Spirits Black Label Rear Diffuser Lexus LS460 F-Sport 12-15 Artisan Spirits Black Label Rear Diffuser Lexus LS460 F-Sport 12-15  $579.19  Buy Now
Artisan Spirits Black Label Rear Diffuser Lexus LS600h F-Sport 12-15 Artisan Spirits Black Label Rear Diffuser Lexus LS600h F-Sport 12-15  $579.19  Buy Now
Artisan Spirits Black Label Rear Diffuser Lexus LS600hL F-Sport 12-15 Artisan Spirits Black Label Rear Diffuser Lexus LS600hL F-Sport 12-15  $579.00  Buy Now
Artisan Spirits Black Label Rear Half Spoiler Porsche Cayenne 11-17 Artisan Spirits Black Label Rear Half Spoiler Porsche Cayenne 11-17  $2,106.00  Buy Now
Artisan Spirits Black Label Rear Half Spoiler Porsche Cayenne Turbo 11-17 Artisan Spirits Black Label Rear Half Spoiler Porsche Cayenne Turbo 11-17  $2,106.00  Buy Now
Artisan Spirits Black Label Rear Under Diffuser Porsche Macan Turbo 15-18 Artisan Spirits Black Label Rear Under Diffuser Porsche Macan Turbo 15-18  $1,053.00  Buy Now
Artisan Spirits Carbon Fiber Rear Diffuser Audi R8 V10 06-14 Artisan Spirits Carbon Fiber Rear Diffuser Audi R8 V10 06-14  $4,754.75  Buy Now
Artisan Spirits Carbon Fiber Rear Diffuser Audi R8 V8 06-14 Artisan Spirits Carbon Fiber Rear Diffuser Audi R8 V8 06-14  $4,754.75  Buy Now
Artisan Spirits Carbon Fiber Rear Diffuser Set Lexus RC-F 15-17 Artisan Spirits Carbon Fiber Rear Diffuser Set Lexus RC-F 15-17  $2,137.00  Buy Now
Artisan Spirits FRP Rear Diffuser Audi R8 V10 06-14 Artisan Spirits FRP Rear Diffuser Audi R8 V10 06-14  $3,510.00  Buy Now
Artisan Spirits FRP Rear Diffuser Audi R8 V8 06-14 Artisan Spirits FRP Rear Diffuser Audi R8 V8 06-14  $3,510.00  Buy Now
Artisan Spirits Rear Under Diffuser Lexus NX300h F-Sport 16-17 Artisan Spirits Rear Under Diffuser Lexus NX300h F-Sport 16-17  $540.00  Buy Now
Artisan Spirits Sports Line Black Label O.F.K. Edition Carbon Rear Diffuser Kit Porsche 911 Turbo | S Artisan Spirits Sports Line Black Label O.F.K. Edition Carbon Rear Diffuser Kit Porsche 911 Turbo | S  $4,943.00  Buy Now
Artisan Spirits Sports Line Black Label O.F.K. Edition Carbon Rear Diffuser Kit Porsche 911 Turbo | S 17-18 Artisan Spirits Sports Line Black Label O.F.K. Edition Carbon Rear Diffuser Kit Porsche 911 Turbo | S 17-18  $4,943.00  Buy Now
Auto Craft Front Under | Diffuser 01 Mazda 2 07-13 Auto Craft Front Under | Diffuser 01 Mazda 2 07-13  $442.75  Buy Now
Auto Craft Front Under | Diffuser 01 Mazda RX-7 FD3S 93-02 Auto Craft Front Under | Diffuser 01 Mazda RX-7 FD3S 93-02  $442.75  Buy Now
Auto Craft Rear Under | Diffuser 01 Mazda RX-7 FD3S 93-02 Auto Craft Rear Under | Diffuser 01 Mazda RX-7 FD3S 93-02  $983.89  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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