Collection: Diffusers
Diffusers are aerodynamic devices commonly found on the rear underside of high-performance & racing cars. They are designed to enhance aerodynamic efficiency by managing the airflow underneath the vehicle. Diffusers work by creating a pressure difference between the upper & lower surfaces, which helps to increase downforce & reduce drag. The diffuser's shape & design incorporate various elements such as channels, fins, & curved surfaces to accelerate the airflow & create a smooth transition from high-pressure to low-pressure regions. By effectively channeling & controlling the airflow, diffusers improve stability, traction, & handling at high speeds. Additionally, they help to extract air from the rear wheel arches, reducing turbulence & minimizing the negative effects of turbulent air on overall vehicle performance. Diffusers come in different sizes, styles, & materials, with carbon fiber being a popular choice due to its lightweight & high-strength properties. It's important to note that the effectiveness of a diffuser can depend on factors such as vehicle design, suspension setup, & driving conditions. Proper installation & alignment are essential to ensure optimal performance & integration with other aerodynamic components of the vehicle. Overall, automotive diffusers are a sought-after addition for enthusiasts & drivers seeking improved aerodynamic performance, increased stability, & a more aggressive appearance for their vehicles.
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NIA 2017-2020 Lexus IS Base TO F-Sport Rear Bumper Conversion Valance + Rear Diffuser Bundle IS17-RV+RD-GRL-PRM
Part # NIA-IS17-RV+RD-GRL-PRMVendor:NIA BODY KITSRegular price From $792.00 USDRegular price$1,039.60 USDSale price From $792.00 USDSale -
NIA FINISH Lexus IS 500 (6pcs) Full Splitter Lip Body Kit + Rear Bumper Diffuser 2022-2024
Part #Vendor:NIA BODY KITSRegular price From $134.00 USDRegular price$184.20 USDSale price From $134.00 USDSale -
NIA Select Diffuser Style
Part #Vendor:NIA BODY KITSRegular price $60.00 USDRegular price$88.00 USDSale price $60.00 USDSale -
NITROUS OXIDE SYSTEMS Safety Blow-Off Cap w/Diffuser 16169NOS
Part # 16169NOSVendor:NITROUS OXIDE SYSTEMSRegular price $88.95 USDRegular price$97.85 USDSale price $88.95 USDSale -
DRAKE AUTOMOTIVE GROUP 18- Mustang Diffuser Blade Kit JR3B-6540544-B
Part # JR3B-6540544-BVendor:DRAKE AUTOMOTIVE GROUPRegular price $68.06 USDRegular price$138.95 USDSale price $68.06 USDSale -
DRAKE AUTOMOTIVE GROUP 18- Mustang GT 1Pc Rear Diffuser JR3B-6540544-A
Part # JR3B-6540544-AVendor:DRAKE AUTOMOTIVE GROUPRegular price $281.95 USDRegular price$310.15 USDSale price $281.95 USDSale -
Stillen 2018-2021 Infiniti Q50 Rear Diffuser - Matte Black - KB11241MB
Part # STILLEN-KB11241MBVendor:STILLENRegular price $381.86 USDRegular price$430.14 USDSale price $381.86 USDSale -
Stillen 2017-2022 Infiniti Q60 3.0t Rear Diffuser [Matte Black] - KB11235MB
Part # STILLEN-KB11235MBVendor:STILLENRegular price $422.11 USDRegular price$476.43 USDSale price $422.11 USDSale -
Stillen 2018-2021 Infiniti Q50 Rear Diffuser - Unpainted - KB11241
Part # STILLEN-KB11241Vendor:STILLENRegular price $312.25 USDRegular price$350.09 USDSale price $312.25 USDSale -
Stillen 2014-17 Infiniti Q50 Rear Diffuser [Unpainted] - KB11222
Part # STILLEN-KB11222Vendor:STILLENRegular price $312.25 USDRegular price$350.09 USDSale price $312.25 USDSale -
Stillen 2014-17 Infiniti Q50 Rear Diffuser [Matte Black] - KB11222MB
Part # STILLEN-KB11222MBVendor:STILLENRegular price $381.86 USDRegular price$430.14 USDSale price $381.86 USDSale -
Stillen 2009-2015 Nissan Maxima Rear Diffuser [Unpainted] - KB127418
Part # STILLEN-KB127418Vendor:STILLENRegular price $277.33 USDRegular price$315.18 USDSale price $277.33 USDSale -
Stillen 2009-2015 Nissan Maxima Rear Diffuser [Matte Black] - KB127418MB
Part # STILLEN-KB127418MBVendor:STILLENRegular price $342.02 USDRegular price$389.57 USDSale price $342.02 USDSale -
Stillen 2016-2018 Nissan Maxima Rear Diffuser [Unpainted] - KB12818
Part # STILLEN-KB12818Vendor:STILLENRegular price $312.33 USDRegular price$350.18 USDSale price $312.33 USDSale -
Stillen 2016-2018 Nissan Maxima Rear Diffuser [Matte Black] - KB12818MB
Part # STILLEN-KB12818MBVendor:STILLENRegular price $377.03 USDRegular price$424.58 USDSale price $377.03 USDSale -
Stillen 2013-2015 Nissan Altima Rear Diffuser [Unpainted] - KB13145
Part # STILLEN-KB13145Vendor:STILLENRegular price $363.23 USDRegular price$408.71 USDSale price $363.23 USDSale -
Stillen 2013-2015 Nissan Altima Rear Diffuser [Matte Black] - KB13145MB
Part # STILLEN-KB13145MBVendor:STILLENRegular price $436.33 USDRegular price$492.78 USDSale price $436.33 USDSale -
Stillen 2016-2018 Nissan Altima Rear Diffuser [Unpainted] - KB13158
Part # STILLEN-KB13158Vendor:STILLENRegular price $339.62 USDRegular price$381.56 USDSale price $339.62 USDSale -
Stillen 2016-2018 Nissan Altima Rear Diffuser [Matte Black] - KB13158MB
Part # STILLEN-KB13158MBVendor:STILLENRegular price $427.17 USDRegular price$482.25 USDSale price $427.17 USDSale -
Stillen 2013-2017 Honda Accord Coupe Rear Diffuser [Unpainted] - KB25002
Part # STILLEN-KB25002Vendor:STILLENRegular price $313.92 USDRegular price$352.01 USDSale price $313.92 USDSale -
Stillen 2013-2017 Honda Accord Coupe Rear Diffuser [Matte Black] - KB25002MB
Part # STILLEN-KB25002MBVendor:STILLENRegular price $313.92 USDRegular price$352.01 USDSale price $313.92 USDSale -
Stillen 2018-2021 Kia Stinger GT (AWD/RWD 3.3TT) Rear Diffuser [Unpainted] - KB26002
Part # STILLEN-KB26002Vendor:STILLENRegular price $410.82 USDRegular price$463.44 USDSale price $410.82 USDSale -
Stillen 2018-2021 Kia Stinger GT (AWD/RWD 3.3TT) Rear Diffuser [Matte Black] - KB26002MB
Part # STILLEN-KB26002MBVendor:STILLENRegular price $469.30 USDRegular price$530.70 USDSale price $469.30 USDSale -
Stillen 2014-2016 Lexus IS250, IS350 Rear Diffuser [Matte Black] - KB31002MB
Part # STILLEN-KB31002MBVendor:STILLENRegular price $314.22 USDRegular price$352.35 USDSale price $314.22 USDSale


![2017-2021 Infiniti Q60 3.0t Rear Diffuser [Matte Black] - KB11235MB](http://milkymotorsports.com/cdn/shop/products/stillen-rear-valance-diffuser-infiniti-q60-v37-img006_3.jpg?v=1700363699&width=533)

![2014-17 Infiniti Q50 Rear Diffuser [Unpainted] - KB11222](http://milkymotorsports.com/cdn/shop/products/stillen-rear-diffuser-infiniti-q50-kb11222uf-img001_1.jpg?v=1700278410&width=533)
![2014-17 Infiniti Q50 Rear Diffuser [Matte Black] - KB11222MB](http://milkymotorsports.com/cdn/shop/products/stillen_infiniti_q50_rear_diffuser_kb11222mb_img010_1.jpg?v=1700278380&width=533)
![2009-2015 Nissan Maxima Rear Diffuser [Unpainted] - KB127418](http://milkymotorsports.com/cdn/shop/products/kb127418.jpg?v=1700278356&width=533)
![2009-2015 Nissan Maxima Rear Diffuser [Matte Black] - KB127418MB](http://milkymotorsports.com/cdn/shop/products/stillen-rear-diffuser-nissan-altima-kb127418mb-img001_1.jpg?v=1700278345&width=533)
![2016-2018 Nissan Maxima Rear Diffuser [Unpainted] - KB12818](http://milkymotorsports.com/cdn/shop/products/stillen_2016-17_maxima_rear_diffuser_kb12818_pics_img0.jpg?v=1700278334&width=533)
![2016-2018 Nissan Maxima Rear Diffuser [Matte Black] - KB12818MB](http://milkymotorsports.com/cdn/shop/products/stillen_2016-17_maxima_rear_diffuser_kb12818_img0_1_1.jpg?v=1700278322&width=533)
![2013-2015 Nissan Altima Rear Diffuser [Unpainted] - KB13145](http://milkymotorsports.com/cdn/shop/products/kb13145_img_03_13_15_nissan_altima_diffuser.jpg?v=1700278309&width=533)
![2013-2015 Nissan Altima Rear Diffuser [Matte Black] - KB13145MB](http://milkymotorsports.com/cdn/shop/products/kb13145_img_03_13_15_nissan_altima_diffuser_1.jpg?v=1700278302&width=533)
![2016-2018 Nissan Altima Rear Diffuser [Unpainted] - KB13158](http://milkymotorsports.com/cdn/shop/products/2016-18_Nissan_Altima_IMG_001_Diffuser_UP_v1.jpg?v=1700278294&width=533)
![2016-2018 Nissan Altima Rear Diffuser [Matte Black] - KB13158MB](http://milkymotorsports.com/cdn/shop/products/2016-18_Nissan_Altima_IMG_000_Diffuser_MB_v1.jpg?v=1700278274&width=533)
![Stillen 2013-2017 Honda Accord Coupe Rear Diffuser [Unpainted] - KB25002](http://milkymotorsports.com/cdn/shop/products/stillen-rear-diffuser-2015-honda-accord-img005_1.jpg?v=1700278256&width=533)
![Stillen 2013-2017 Honda Accord Coupe Rear Diffuser [Matte Black] - KB25002MB](http://milkymotorsports.com/cdn/shop/products/stillen-rear-diffuser-2015-honda-accord-img005_1_9529c032-e6df-4a8b-8bbb-6b8570334cdb.jpg?v=1700278246&width=533)
![2018-2021 Kia Stinger GT (AWD/RWD 3.3TT) Rear Diffuser [Unpainted] - KB26002](http://milkymotorsports.com/cdn/shop/products/img006_1_1.jpg?v=1700278235&width=533)
![2018-2021 Kia Stinger GT (AWD/RWD 3.3TT) Rear Diffuser [Matte Black] - KB26002MB](http://milkymotorsports.com/cdn/shop/products/img002_2_2.jpg?v=1700278219&width=533)
![Stillen 2014-2016 Lexus IS250, IS350 Rear Diffuser [Matte Black] - KB31002MB](http://milkymotorsports.com/cdn/shop/products/stillen-rear-diffuser-lexus-is350-fsport-kb31002mb.jpg?v=1700278203&width=533)