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Replacement Diffusers

Product Image Product Name Price Buy Now
3D Design Carbon Fiber Rear Diffuser Set BMW 6 Series F06 | F12 | F13 12-15 3D Design Carbon Fiber Rear Diffuser Set BMW 6 Series F06 | F12 | F13 12-15  $3,295.00  Buy Now
3D Design Carbon Fiber Rear Diffuser Set BMW M6 F13 13-18 3D Design Carbon Fiber Rear Diffuser Set BMW M6 F13 13-18  $3,295.00  Buy Now
3D Design Carbon Fiber Rear Diffuser Single Exhaust BMW 1 Series E82 M-Sport 04-11 3D Design Carbon Fiber Rear Diffuser Single Exhaust BMW 1 Series E82 M-Sport 04-11  $1,695.00  Buy Now
3D Design Carbon Fiber Rear Diffuser Single Exhaust BMW 5 Series E60 E61 M-Sport 06-10 3D Design Carbon Fiber Rear Diffuser Single Exhaust BMW 5 Series E60 E61 M-Sport 06-10  $1,115.00  Buy Now
3dCarbon Rear Lower Ford Focus 2 Door 09-11 3dCarbon Rear Lower Ford Focus 2 Door 09-11  $189.00  $154.98  Buy Now
3dCarbon Rear Lower Ford Focus 4 Door 08-11 3dCarbon Rear Lower Ford Focus 4 Door 08-11  $189.00  $154.98  Buy Now
3dCarbon Rear Lower Ford Focus Sporty Ses 4 Door 10-11 3dCarbon Rear Lower Ford Focus Sporty Ses 4 Door 10-11  $189.00  $154.98  Buy Now
3dCarbon Rear Lower Ford Taurus 07-09 3dCarbon Rear Lower Ford Taurus 07-09  $465.34  $381.58  Buy Now
3dCarbon Rear Lower Skirt Dual Exhaust Ford F-150 06-08 3dCarbon Rear Lower Skirt Dual Exhaust Ford F-150 06-08  $255.46  $209.48  Buy Now
3dCarbon Rear Lower Skirt Ford F-150 06-08 3dCarbon Rear Lower Skirt Ford F-150 06-08  $255.46  $209.48  Buy Now
3dCarbon Rear Lower Skirt Ford Fusion  4 Cyl 06-09 3dCarbon Rear Lower Skirt Ford Fusion 4 Cyl 06-09  $260.76  $213.82  Buy Now
3dCarbon Rear Lower Skirt Ford Fusion 13-14 3dCarbon Rear Lower Skirt Ford Fusion 13-14  $295.00  $241.90  Buy Now
3dCarbon Rear Lower Skirt Ford Fusion V6 06-09 3dCarbon Rear Lower Skirt Ford Fusion V6 06-09  $260.76  $213.82  Buy Now
3dCarbon Rear Lower Skirt Trailer Hitch Cover Dual Exhaust Ford F-150 06-08 3dCarbon Rear Lower Skirt Trailer Hitch Cover Dual Exhaust Ford F-150 06-08  $59.36  $48.68  Buy Now
Abflug Rear Diffuser Bumper Spoiler (2/2) Fairlady Nissan Z32 300ZX 90-99 Abflug Rear Diffuser Bumper Spoiler (2/2) Fairlady Nissan Z32 300ZX 90-99  $1,535.28  Buy Now
Abflug Rear Under Diffuser (2/2) CFRP Fairlady Nissan Z32 300ZX 90-99 Abflug Rear Under Diffuser (2/2) CFRP Fairlady Nissan Z32 300ZX 90-99  $984.04  Buy Now
Abflug Rear Under Diffuser (2seater) CFRP Fairlady Nissan Z32 300ZX 90-99 Abflug Rear Under Diffuser (2seater) CFRP Fairlady Nissan Z32 300ZX 90-99  $1,177.04  Buy Now
Abflug Rear Under Diffuser (CFRP) Ferrari 360 Modena 99-04 Abflug Rear Under Diffuser (CFRP) Ferrari 360 Modena 99-04  $3,129.25  Buy Now
Abflug Rear Under Diffuser GFRP Ferrari 360 Modena 99-04 Abflug Rear Under Diffuser GFRP Ferrari 360 Modena 99-04  $2,563.30  Buy Now
AC Schnitzer Carbon Fiber Rear Diffuser BMW E60 M5 05-10 AC Schnitzer Carbon Fiber Rear Diffuser BMW E60 M5 05-10  $1,795.00  $1,750.13  Buy Now
AC Schnitzer Carbon Rear Diffuser BMW 6-Series F12|F13|F06 with M-Technik Aero 12-15 AC Schnitzer Carbon Rear Diffuser BMW 6-Series F12|F13|F06 with M-Technik Aero 12-15  $4,495.00  $4,382.63  Buy Now
AC Schnitzer Carbon Rear Diffuser BMW M5 F10 12-16 AC Schnitzer Carbon Rear Diffuser BMW M5 F10 12-16  $4,495.00  $4,382.63  Buy Now
AC Schnitzer Carbon Rear Diffuser BMW M6 F12|F13|F06 13-18 AC Schnitzer Carbon Rear Diffuser BMW M6 F12|F13|F06 13-18  $4,495.00  $4,382.63  Buy Now
AC Schnitzer Carbon Rear Diffuser BMW X5M E70 10-13 AC Schnitzer Carbon Rear Diffuser BMW X5M E70 10-13  $3,695.00  $3,602.63  Buy Now
AC Schnitzer Carbon Rear Diffuser BMW X6M E71 10-14 AC Schnitzer Carbon Rear Diffuser BMW X6M E71 10-14  $4,495.00  $4,382.63  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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