Anderson Composites 2015-2017 Ford Mustang Type-AR Rear Diffuser Quad Tip

The AC-RL15FDMU-ARQ rear diffuser for the 2015-2017 Ford Mustang is built from 3K 2×2 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-RL15FDMU-ARQ 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 2×2 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.
• Anderson Composites carbon fiber rear diffuser (AC-RL15FDMU-ARQ).
• Compatible with factory exhaust exit locations.

Fitment

Specifications

What’s Included

• Anderson Composites carbon fiber rear diffuser (AC-RL15FDMU-ARQ)
• 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

• Anderson Composites Products
• Ford Mustang Parts
• Rear Diffusers
• Exterior Parts

Frequently Asked Questions

Does the AC-RL15FDMU-ARQ 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 2015-2017 Ford Mustang. 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-RL15FDMU-ARQ 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-RL15FDMU-ARQ 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.