Audi S5 4-Door Carbon Fiber Rear Bumper Diffuser, 2020–2021

Carbon Fiber Rear Bumper Diffuser for Audi S5 4-Door

Add a gloss carbon-fiber accent to the lower rear bumper of your S5. This product is listed as a rear diffuser/valance lip, not a complete bumper or exhaust assembly.

Listed Vehicle Fitment

• Audi S5, 4-door, as stated in the supplied fitment specification.
• Model years: 2020 and 2021.
• Position: lower rear bumper.

Confirm your exact body style, market specification, production date and bumper profile before purchase. Product tags mention Sportback, but the explicit fitment only says “4-door”; verify the actual body and mounting arrangement rather than relying on the tags alone. Coupe, Cabriolet, A5, RS5 and other years are not established applications.

Material and Finish

• Carbon fiber, according to the supplied material specification.
• Glossy surface with a double-layer UV-protected clear coating.
• Weave pattern, dry-carbon construction, backing materials and curing process are not specified.

Exhaust and Rear Equipment Checks

Exhaust-opening dimensions, tip spacing and compatibility with specific exhaust systems are not supplied. Compare the diffuser openings with your actual exhaust layout, particularly if aftermarket tips are fitted, and verify clearance before installation.

Confirm clearance around any existing rear sensors, lamps and adjacent equipment. Compatibility with individual rear equipment arrangements is not documented; check relevant functions after fitting.

Installation

Self-tapping screws are listed as included. The source does not clarify whether this diffuser replaces the original insert or attaches over existing trim. Verify the part's structure, attachment points and any removal requirements before proceeding.

Professional installation is recommended. Test-fit and check alignment, mounting points and exhaust clearance before fastening. Self-tapping screws may require drilling, so a no-drill installation is not guaranteed. Confirm the fastening instructions before making permanent changes, and do not force installation if the bumper profile does not match.

Package Details

The source lists a rear diffuser and self-tapping screws. Exact piece count, dimensions and hardware quantities are not specified. Exhaust tips, lamps, sensors, tape and a complete bumper are not confirmed as included; verify package contents before purchase.

Frequently Asked Questions

Is Sportback fitment confirmed?
The tags mention Sportback, but the explicit fitment only identifies S5 4-door. Confirm your exact body style and rear bumper before ordering.

Is this a replacement or an overlay?
The supplied specification does not clarify the structure. Confirm the attachment method and original-trim removal requirements before installation.

Are screws included?
Yes. Self-tapping screws are listed, without specified quantities.

Will it fit aftermarket exhaust tips?
Opening dimensions and aftermarket exhaust compatibility are not supplied. Compare the actual tip layout and clearance first.

Does it improve downforce, stability or fuel consumption?
No measured aerodynamic, handling or fuel-economy results are supplied, so those effects are not promised.