Diffusers
Performance Car Diffusers
AME Motorsport's Diffusers collection features advanced aerodynamic components engineered to maximize rear downforce and optimize underbody airflow for high-performance vehicles. Designed for enthusiasts and competitors who demand superior grip and stability at speed, our comprehensive car diffusers combine lightweight carbon fiber construction, precision aerodynamic profiling, and application-specific engineering to enhance rear-end traction and vehicle balance. The collection showcases solutions including rear bumper diffusers, multi-element racing diffusers, custom diffuser configurations, and aggressive motorsport-grade designs, all engineered for seamless integration with factory and modified rear fascias. Whether you're upgrading a track-focused sports car or building a competition platform, our auto diffuser systems deliver proven aerodynamic performance and race-inspired styling.
Key Performance Benefits:
Premium carbon fiber and lightweight composite construction with precision-engineered diffuser channels, optimized fin spacing, and aggressive exit angles delivers 15-30% increased rear downforce compared to factory configurations while maintaining optimal airflow management and reducing aerodynamic lift at high speeds.
FAQ
Q: How much downforce do car diffusers add?
A: Performance diffusers typically generate 15-30kg of additional rear downforce at highway speeds, with racing diffusers producing 40-70kg+ at track speeds depending on design complexity and vehicle velocity.
Q: Are diffusers for cars easy to install?
A: Most bolt-on diffusers require basic hand tools and factory mounting points; professional installation recommended for custom diffusers requiring rear bumper modification or precise ground clearance adjustment.
Q: Can aftermarket diffusers work with factory exhaust systems?
A: Premium car diffusers are engineered for factory exhaust compatibility; verify tip placement, exit positioning, and diffuser channel clearance before purchase for optimal fitment.
Q: Will diffusers scrape on driveways and speed bumps?
A: Quality diffusers maintain reasonable ground clearance for street use; lowered vehicles may require approach angle awareness; racing diffusers designed for track use may have aggressive geometry.
Q: Do auto diffusers improve fuel efficiency?
A: Performance diffusers primarily enhance stability and downforce; minor efficiency gains possible through reduced rear-end lift and improved underbody airflow management at highway speeds.
Q: What's the difference between street and racing diffusers?
A: Street diffusers balance aerodynamic performance with ground clearance and durability; racing diffusers feature aggressive multi-element designs optimized for maximum downforce on smooth track surfaces.
Q: Are car diffusers for sale with warranty coverage?
A: AME Motorsport diffusers include manufacturer warranty against defects; coverage varies by product line—contact sales for specific warranty terms, bulk pricing options, and international shipping including car diffusers Australia delivery.
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Sort by:
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- Best selling
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- Price, low to high
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CMST Carbon Fiber Rear Diffuser for Volkswagen GTI MK8Vendor:CMSTCMST Carbon Fiber Rear Diffuser for Volkswagen GTI MK8 Material & Finish: Pre-preg Carbon Fiber with UV Protection Clearcoat Suitable for: Volkswagen GTI MK8 Content: Rear Diffuser * 1 Installation: Replacement *Default prices for Carbon Fiber Parts Are for 3k (2x2) Woven Pattern Carbon Fiber...
- $2,679.60
- $2,679.60
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CMST Carbon Fiber Rear Diffuser for Tesla Model X 2022-ONVendor:CMSTMaterial & Finish (Optional) Real Vacuumed Carbon Fiber with UV Protection Clearcoat Real pre-preg Carbon Fiber - is cured in autoclave in high pressure and temperature. These material and process ensure that the products can sustain higher force and temperature than the vacuum infused carbon fiber...
- $3,790.60
- $3,790.60
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CMST Carbon Fiber Rear Diffuser (3 Pcs) for Tesla Model S 2016-2019Vendor:CMSTMaterial & Finish Real Carbon Fiber with UV Protection Clearcoat *Default prices for Carbon Fiber Parts Are for 3k (2x2) Woven Pattern Carbon Fiber with Gloss Clear Coat Finish.Forged pattern +20%, Matte Finish +10% Additional fees will be billed separately.
- $3,285.70
- $3,285.70
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CMST Carbon Fiber Rear Diffuser for Tesla Model X 2016-2021Vendor:CMSTCMST Carbon Fiber Rear Diffuser for Tesla Model X 2016-2021 Material & Finish Real Carbon Fiber with UV Protection Clearcoat *Default prices for Carbon Fiber Parts Are for 3k (2x2) Woven Pattern Carbon Fiber with Gloss Clear Coat Finish.Forged pattern +20%, Matte Finish +10% Additional...
- $3,749.90
- $3,749.90
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CMST Carbon Fiber Rear Diffuser & Canards for Porsche Taycan Base & 4SVendor:CMSTCMST Carbon Fiber Rear Diffuser & Canards for Porsche Taycan Base & 4S Material & Finish Real Carbon Fiber with UV Protection Clearcoat *Default prices for Carbon Fiber Parts Are for 3k (2x2) Woven Pattern Carbon Fiber with Gloss Clear Coat Finish.Forged pattern +20%,...
- $5,494.50
- $5,494.50
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CMST Carbon Fiber Rear Diffuser for Porsche Cayenne Coupe 9Y3 2018-23Vendor:CMSTCMST Carbon Fiber Rear Diffuser for Porsche Cayenne Coupe 9Y3 2018-23 *Default prices for Carbon Fiber Parts Are for 3k (2x2) Woven Pattern Carbon Fiber with Gloss Clear Coat Finish.Forged pattern +20%, Matte Finish +10% Additional fees will be billed separately.
- $3,285.70
- $3,285.70
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CMST Carbon Fiber Rear Diffuser & Canards for Porsche Taycan Turbo & Turbo SVendor:CMSTCMST Carbon Fiber Rear Diffuser & Canards for Porsche Taycan Turbo & Turbo S Material & Finish Real Carbon Fiber with UV Protection Clearcoat *Default prices for Carbon Fiber Parts Are for 3k (2x2) Woven Pattern Carbon Fiber with Gloss Clear Coat Finish.Forged pattern...
- $4,767.40
- $4,767.40
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CMST Carbon Fiber Rear Diffuser for Porsche 911 992 2020Vendor:CMSTCMST Carbon Fiber Rear Diffuser for Porsche 911 992 2020 Material & Finish Real Carbon Fiber with UV Protection Clearcoat *Default prices for Carbon Fiber Parts Are for 3k (2x2) Woven Pattern Carbon Fiber with Gloss Clear Coat Finish.Forged pattern +20%, Matte Finish +10%...
- $3,285.70
- $3,285.70
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CMST Carbon Fiber Rear Diffuser for Porsche 991 991.2 GT3RSVendor:CMSTCMST Carbon Fiber Rear Diffuser for Porsche 991 991.2 GT3RS Material & Finish Real Carbon Fiber with UV Protection Clearcoat *Default prices for Carbon Fiber Parts Are for 3k (2x2) Woven Pattern Carbon Fiber with Gloss Clear Coat Finish.Forged pattern +20%, Matte Finish +10%...
- $4,295.50
- $4,295.50
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CMST Carbon Fiber Rear Diffuser Ver.1 for Porsche Panamera 971 / Turbo / GTS 2017-ONVendor:CMSTCMST Carbon Fiber Rear Diffuser Ver.1 for Porsche Panamera 971 / Turbo / GTS 2017-ON Material & Finish Real Carbon Fiber with UV Protection Clearcoat *Default prices for Carbon Fiber Parts Are for 3k (2x2) Woven Pattern Carbon Fiber with Gloss Clear Coat Finish.Forged...
- $3,117.40
- $3,117.40
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CMST Carbon Fiber Rear Diffuser for Porsche Cayenne 9Y0 2018-23Vendor:CMSTCMST Carbon Fiber Rear Diffuser for Porsche Cayenne 9Y0 2018-23 Material & Finish Real Carbon Fiber with UV Protection Clearcoat *Default prices for Carbon Fiber Parts Are for 3k (2x2) Woven Pattern Carbon Fiber with Gloss Clear Coat Finish.Forged pattern +20%, Matte Finish +10%...
- $3,285.70
- $3,285.70
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CMST Carbon Fiber Rear Diffuser for 2015-2018 Macan & Macan SVendor:CMSTCMST Carbon Fiber Rear Diffuser for 2015-2018 Macan & Macan S Material & Finish Real Carbon Fiber with UV Protection Clearcoat Installation Replacement with Factory Mounting Points Content Rear Diffuser *1 *Default prices for Carbon Fiber Parts Are for 3k (2x2) Woven Pattern Carbon...
- $3,117.40
- $3,117.40
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CMST Carbon Fiber Rear Bumper & Diffuser for Porsche 991.1 991.2 GT2RS (2012-2018)Vendor:CMSTCMST Carbon Fiber Rear Bumper & Diffuser for Porsche 991.1 991.2 GT2RS (2012-2018) Material & Finish Real Carbon Fiber with UV Protection Clearcoat FRP with Primed Black Finish *FRP is a composite material comprised of carbon fiber reinforced polymers. FRP option comes with primed finish...
- $5,107.30
- $5,107.30
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CMST Carbon Fiber Rear Diffuser for Porsche Cayman/Boxster 981 2012-2015Vendor:CMSTCMST Carbon Fiber Rear Diffuser for Porsche Cayman/Boxster 981 2012-2015 Material Real Carbon Fiber with UV Protection Clearcoat *Default prices for Carbon Fiber Parts Are for 3k (2x2) Woven Pattern Carbon Fiber with Gloss Clear Coat Finish.Forged pattern +20%, Matte Finish +10% Additional fees...
- $2,578.40
- $2,578.40
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CMST Carbon Fiber Rear Bumper & Diffuser for Infiniti Q60 to Project Black S concept 2017-2022Vendor:CMSTCMST Carbon Fiber Rear Bumper & Diffuser for Infiniti Q60 to Project Black S concept 2017-2022 Material & Finish Real Carbon Fiber with UV Protection Clearcoat FRP with Primed Black Finish *FRP is a composite material comprised of carbon fiber reinforced polymers. FRP option comes...
- $5,599.00
- $5,599.00
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CMST Carbon Fiber Rear Diffuser for Infiniti Q50 2014-2022Vendor:CMSTCMST Infiniti Q50 Carbon Fiber Rear Diffuserwith UV Protection Material & Finish Real Carbon Fiber with UV Protection Clearcoat *Default prices for Carbon Fiber Parts Are for 3k (2x2) Woven Pattern Carbon Fiber with Gloss Clear Coat Finish.Forged pattern +20%, Matte Finish +10% Additional fees...
- $2,006.40
- $2,006.40
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CMST Carbon Fiber Rear Bumper & Diffuser for Infiniti Q50 to Project Black S Concept 2014-2022Vendor:CMSTCMST Carbon Fiber Rear Bumper & Diffuser for Infiniti Q50 to Project Black S Concept Material & Finish Real Carbon Fiber with UV Protection Clearcoat FRP with Primed Black Finish *FRP is a composite material comprised of carbon fiber reinforced polymers. FRP option comes with...
- $3,747.70
- $3,747.70
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CMST Carbon Fiber Rear Diffuser for Mercedes Benz E-Class 4 Door W213 2017-2020Vendor:CMSTMaterial & Finish Real Carbon Fiber with UV Protection Clearcoat Suitable for Suitable for: Mercedes Benz E-CLASS with AMG package & E43 & E53 &E63 W213 4 Door 2017-2020 (Pre-facelift) *FOR E350 E450 models (with AMG package) requires you to upgrade the exhaust tips to E63...
- $2,612.50
- $2,612.50
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CMST Carbon Fiber Rear Diffuser for Mercedes Benz C190 AMG GT GTS 2015-ONVendor:CMSTCMST Carbon Fiber Rear Diffuser for Mercedes Benz C190 AMG GT GTS 2015-ON Material & Finish Real Carbon Fiber with UV Protection Clearcoat Suitable For 2015-ON C190 AMG GT GTS *Exhaust Tips are included *Default prices for Carbon Fiber Parts Are for 3k (2x2) Woven Pattern...
- $4,558.40
- $4,558.40
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CMST Carbon Fiber REAR DIFFUSER for Mercedes Benz E350 E450 E53 E63 W213 2021-ON (Facelift)Vendor:CMSTCMST Carbon Fiber Rear Diffuser for Mercedes Benz E350 E450 E53 E63 W213 2021-ON (Facelift) Material & Finish Pre-preg Carbon Fiber with UV Protection Clearcoat Suitable for Suitable for: Mercedes Benz E-CLASS with AMG package & E53 &E63 W213 4 Door 2021-ON (Facelift) *FOR...
- $2,949.10
- $2,949.10
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