Rear Diffuser Audi A6 S6 C8 2019-2021 with 4 Silver or Black Exhaust Tips

Audi A6 S6 C8 rear diffuser with its four exhaust tips

This rear diffuser for Audi A6 and S6 C8 models from 2019 to 2021 is not just a lip: it is a complete kit combining the ABS bumper lip with its four exhaust tips, available in polished silver or black. A6 models with the S-Line trim, supplied with faux trapezoidal exhaust outlets, thus gain the true four-outlet design of the sporty versions, in a single order and without welding.

Why this diffuser kit with tips rather than a lip alone

• Two tip finishes: silver matches the contrast of the aluminum packs, while black extends the Black Edition packs.
• Coordinated set: the outlets are designed for the diffuser cutouts, with no loose fit around the frames.
• Ribbed injected ABS, more tolerant than fiberglass on a lower bumper exposed to gravel.
• No-weld installation: the tips are crimped onto the original pipe with internal clamps.
• Unapologetic S6 look: hollowed-out lower section, central ribs, and integrated outlet frames.
• Reversible: the original lip can be reinstalled; nothing is cut on the bumper.

Audi A6 C8 compatibility: check the trim before ordering

The kit is aimed at the C8 generation of the Audi A6 and S6, in sedan body style, for models from 2019, 2020, and 2021, equipped with the S-Line bumper. Bumpers from the base trim, whose lower cutout differs, are not compatible with this lip. Also measure the outer diameter of your exhaust pipes: the provided tips accommodate the common diameters of the range, but a replaced exhaust system may fall outside the range. Compatibility is given based on the model and should be checked before installation.

Technical specifications

Diffuser material: Injected ABS, gloss black finish. Tips: 4 outlets, steel with a polished silver or black finish depending on the version chosen. Contents: 1 diffuser and 4 tips, plus the screws and clamps. Mounting: original clips and screws, pre-marked drilling points. Vehicles: Audi A6 and S6 C8 S-Line 2019-2021. Condition: 100% new.

Installation and maintenance

Allow two hours for two people. Remove the original lip by releasing the clips under the bumper, dry-fit the diffuser, and check the alignment of the frames with the pipes. Then tighten the tips' internal clamps by hand, without crushing the pipe, and then retighten after the exhaust system has reached operating temperature: steel expands, and a clamp tightened cold will loosen. Maintenance: soapy water on the ABS, stainless steel product on the silver tips to prevent heat haze.

Frequently asked questions

Do the exhaust tips need to be welded?
No, they are secured with internal clamps on the existing pipe. A weld point remains possible if you want a permanent installation.

Does the kit change the exhaust sound?
Marginally. These are aesthetic tips fitted at the end of the line, not a muffler.

Is the diffuser supplied painted?
Yes, in gloss black, ready to install. Color matching to the bodywork remains possible by a body shop.

My A6 has a bumper without the S-Line trim; will it fit?
No. The lower cutout of the base bumper is different, and the lip will not fit properly.

Do I need to drill the bumper?
A few mounting points need to be drilled depending on the vehicle; they are hidden by the diffuser once installed.

Four real outlets and a hollowed-out lower bumper: it is the touch that transforms an A6 S-Line into an S6 in everyone's eyes.

Type: Rear diffuser kit + 4 exhaust tips
Vehicles: Audi A6 and S6 C8 S-Line 2019-2021
Material: Gloss black injected ABS
Tips: 4 outlets, polished silver or black
Contents: 1 diffuser + 4 tips + screws
Mounting: clips, screws, and clamps
Welding: not required
Reversible: yes
Condition: 100% new