-10%
Anderson Composites 2020-2023 Ford Mustang/Shelby GT500 Carbon Fiber Rear Diffuser - Anderson Composites AC-RL20FDMU500
Anderson Composites 2020-2023 Ford Mustang/Shelby GT500 Carbon Fiber Rear Diffuser - Anderson Composites AC-RL20FDMU500
Anderson Composites 2020-2023 Ford Mustang/Shelby GT500 Carbon Fiber Rear Diffuser - Anderson Composites AC-RL20FDMU500
Anderson Composites 2020-2023 Ford Mustang/Shelby GT500 Carbon Fiber Rear Diffuser - Anderson Composites AC-RL20FDMU500
Anderson Composites 2020-2023 Ford Mustang/Shelby GT500 Carbon Fiber Rear Diffuser - Anderson Composites AC-RL20FDMU500
Click to zoom in

Anderson Composites 2020-2023 Ford Mustang/Shelby GT500 Carbon Fiber Rear Diffuser

ANDAC-RL20FDMU500
887753487124
Diffusers
Special order
$ 2,099.00 $ 1,889.10
$ 1,889.10

The AC-RL20FDMU500 rear diffuser for the 2020-2023 Ford Mustang GT500 is built from 3K 2x2 twill carbon fiber using a vacuum-infused wet layup, delivering the iconic carbon weave with up to 50% weight savings over the factory steel panel. Engineered with functional diffuser fins to manage underbody airflow at speed, this component replaces the factory rear valance or lower bumper section and mounts at the OEM attachment points without cutting or drilling. The AC-RL20FDMU500 brings up to 50% weight savings over the stock plastic unit alongside genuine aerodynamic benefit, reducing underbody turbulence and improving rear stability at track speeds.

Key Features

  • Material: 3K 2x2 twill carbon fiber, vacuum-infused wet layup.
  • Finish: marine-grade gel coat with UV inhibitors, hand-polished to a gloss finish.
  • Weight savings: up to 50% vs. OEM rear valance.
  • Direct OEM bolt-on, no cutting or drilling required.
  • Compatible with factory exhaust exit locations.
  • Precision-molded from OEM panel for exact body line continuity.

Fitment

Year Range Make Model Trim
2020-2023 Ford Mustang GT500

Specifications

Detail Value
Part Number AC-RL20FDMU500
Brand Anderson Composites
Material 3K 2x2 twill carbon fiber
Construction vacuum-infused wet layup
Surface Finish marine-grade gel coat with UV inhibitors, hand-polished to a gloss finish
Weight Savings Up to 50% vs. OEM rear valance
Mounting Direct bolt-on, OEM attachment points

What's Included

  • Anderson Composites carbon fiber rear diffuser (AC-RL20FDMU500)
  • Mounting hardware (uses OEM attachment points)

Brand Information

Anderson Composites manufactures application-specific carbon fiber, fiberglass, and composite exterior components for performance vehicles. Construction, finish, mounting, and vehicle compatibility remain manufacturer-part-number specific.

Related Parts

Frequently Asked Questions

Does the AC-RL20FDMU500 provide measurable aerodynamic benefit?
Yes. The diffuser fins expand the exiting underbody airflow, reducing rear turbulence and drag while adding stability at speed. The benefit increases with vehicle velocity and is most noticeable on track above 60 mph.

Will this diffuser fit my exhaust system?
This diffuser is designed around the factory exhaust exit positions for the 2020-2023 Ford Mustang GT500. Most OEM-location cat-back systems are compatible. If your exhaust uses relocated tips or custom exit positioning, verify clearance during test-fit before final installation.

Does installation require cutting or drilling?
No. The AC-RL20FDMU500 uses the OEM rear attachment points. No new holes or body modification are required. A test-fit before final fastening is recommended to confirm all exhaust and body clearances.

Will this affect factory tow hooks and jacking points?
Yes, access to factory jacking and tow hook locations is preserved in the design. If you have aftermarket underbody accessories, verify clearance during test-fit before committing.

Installation Instructions

  1. Lift and support the rear of the vehicle safely to access undercarriage attachment points
  2. Remove the OEM rear valance or lower bumper section, noting all clip and bolt locations
  3. Test-fit the AC-RL20FDMU500 to confirm alignment with the exhaust exits and body lines
  4. Transfer or reinstall OEM clips and fasteners to secure the diffuser
  5. Verify all exhaust clearances before lowering the vehicle
  6. Torque all fasteners to factory specification and inspect fitment from all angles

WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.

Anderson Composites

Anderson Composites

Shop Anderson Composites hoods, fenders, decklids, splitters, spoilers, diffusers and exterior trim at Black Ops Auto Works. Compare carbon-fiber and fiberglass components by exact vehicle application, body configuration, finish and manufacturer part number. A similar appearance does not establish compatibility with another trim, bumper or body width. Hoods, Fenders and Replacement Panels Identify the exact hood or panel design, construction and finished surfaces before ordering. Single-sided and double-sided carbon construction differ, and a visible carbon finish is a different choice from a panel intended for paint. Check hinge and latch arrangements, hood-pin requirements, vent clearance, heat shielding and any factory components that must transfer. Compare stated weights for the exact part rather than assuming every composite panel offers the same reduction. Splitters, Spoilers, Diffusers and Trim Match front aero to the installed bumper and rear components to the exhaust layout...

View Anderson Composites Products
Carbon Fiber Parts & Accessories

Carbon Fiber Parts & Accessories

Carbon fiber parts and accessories for Jeep Grand Cherokee, Trackhawk, Dodge Charger, Challenger, Durango, Chrysler 300, Ford Mustang, and Chevrolet Camaro and Corvette are stocked at Black Ops Auto Works. Shop carbon fiber hoods, front splitters, rear spoilers, diffusers, side skirts, mirror covers, headlight covers, badges, and interior trim for Hellcat, Trackhawk, Demon, SRT, and HEMI 6.2L and 6.4L platforms. Every part is filterable by year, make, model, trim, and engine so the correct fitment ships the first time. Black Ops Auto Works carries 2,338 carbon fiber SKUs across hoods, aero, and trim categories. What This Category Covers Carbon fiber parts combine weight reduction with aggressive styling for builds that want a performance look without sacrificing strength. This category spans full hood replacements, splitters and diffusers for aerodynamic upgrades, and smaller trim and badge pieces that finish off an interior or exterior refresh. Why Carbon Fiber Carbon fiber pan...

View Carbon Fiber Parts & Accessories Products
Diffusers

Diffusers

Rear diffusers, diffuser fins, and aero extensions help manage underbody airflow and finish the rear profile of street, show, and track builds. Shop carbon fiber, fiberglass, and paintable diffuser options for Dodge Charger, Mustang, Camaro, Corvette, WRX STI, GR86, BRZ, BMW M cars, GT-R, Civic Type R, Hyundai N, and other performance platforms. Black Ops Auto Works carries 99 diffuser SKUs across vehicle-specific rear valances, carbon fiber upgrades, diffuser fins, mounting hardware, and aero components. Filter by year, make, model, trim, and drivetrain to confirm the correct rear bumper and exhaust configuration before ordering. What Rear Diffusers Cover A rear diffuser is the shaped panel below the rear bumper. It can add a cleaner motorsport look, guide air leaving the underside of the car, and provide clearance around exhaust tips. Catalog options include complete replacement panels, add-on fins, lower valance diffusers, widebody versions, and model-specific carbon fiber co...

View Diffusers Products
Exterior Parts & Accessories

Exterior Parts & Accessories

Shop exterior parts and accessories for cars, trucks, Jeeps, and SUVs at Black Ops Auto Works. Explore carbon-fiber hoods, front lips, splitters, spoilers, diffusers, fender flares, truck steps, bed accessories, and exterior trim. Whether you are updating a performance vehicle’s appearance or adding everyday utility to a pickup, choose components matched to your exact vehicle and existing equipment. Carbon-Fiber Hoods and Body Panels Explore Black Ops Auto Works hood designs and selected replacement panels for Jeep Grand Cherokee, Dodge Charger, Dodge Durango, Chrysler 300, and other listed applications. Featured designs include Demon, Sniper, Redeye, and CFR options for supported vehicle configurations. Compare the construction, finish, mounting requirements, and supplied components on each listing. A carbon-fiber appearance does not establish that every product uses the same material or manufacturing method. Browse our Black Ops Carbon Fiber collection for focused shopping. Front ...

View Exterior Parts & Accessories Products
Exterior Styling

Exterior Styling

Exterior styling parts and accessories for cars, trucks, and SUVs are stocked at Black Ops Auto Works. Shop spoilers, front splitters, rear diffusers, side skirts, body kits, carbon fiber hoods and trunks, fender flares, badges and emblems, mirror covers, chrome delete trim, and window vents for Jeep Grand Cherokee Trackhawk, Dodge Charger and Challenger, RAM TRX, Chevrolet Camaro and Corvette, and Hellcat and SRT platforms. Every product is filterable by year, make, model, trim, and body style so the correct part ships the first time. Black Ops Auto Works carries 2,389 exterior styling SKUs across aerodynamic, carbon fiber, and badge and trim categories. What This Collection Covers Exterior Styling groups together the parts that change the visual character and aerodynamics of a vehicle, from functional front splitters and rear diffusers to purely cosmetic badges and mirror covers. This collection combines Black Ops Auto Works in-house carbon fiber and fiberglass components with...

View Exterior Styling Products
Ford Mustang Parts & Accessories

Ford Mustang Parts & Accessories

Ford Mustang parts and accessories for every generation are stocked at Black Ops Auto Works. Shop cold air intakes, cat-back and axle-back exhaust systems, headers, coilovers, lowering springs, sway bars, brake pads, brake rotors, big brake kits, carbon fiber body parts, wheel spacers, fuel system components, and lighting upgrades for the Fox Body, SN95, New Edge, S197, and S550/S650 platforms, including EcoBoost, GT, Mach 1, Shelby GT350, Shelby GT500, and Dark Horse. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 2,101 Ford Mustang SKUs across suspension, brakes, exhaust, intake, exterior, and drivetrain categories. What This Collection Covers The Ford Mustang has run through six generations since 1964, and each one uses different suspension geometry, brake hardware, exhaust routing, and body dimensions. This collection groups parts confirmed to fit specific Mustang generatio...

View Ford Mustang Parts & Accessories Products
Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

Learn More & Apply

Your cart

×