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Carbon Rear Diffuser for the Second Generation R8
This is the German Rush rear diffuser for the 2016-2018 Audi R8 2nd Gen Type 4S, molded in genuine carbon fiber and built as a direct replacement for the factory rear diffuser under the rear bumper. Part GR8CFRD16 replaces the painted 4S diffuser with gloss carbon on the original mounting points, and it installs on the original mounting points on Coupe and Spyder bodies with the V10. The visible surface is a 2x2 weave under a gloss UV resistant clear coat chosen to match factory carbon trim, so it blends with carbon parts already on the car.
Key Features
- Part GR8CFRD16, genuine carbon fiber rear diffuser for the 2016-2018 Audi R8, supplied as a single piece
- Cut for the 2016-2018 Type 4S rear bumper
- Direct replacement using the factory diffuser mounting points
- Vacuum formed rather than hand laid, which produces a consistent weave pattern and a dense, void free laminate
- Factory correct 2x2 weave under a deep gloss UV resistant clear coat that meets or exceeds most OEM finish requirements
- Manufactured in the United States in Lake Elsinore, California
Fitment
| Vehicle Application | Generation or Trim | Body Style | Engine | Position | Notes |
|---|---|---|---|---|---|
| 2016-2018 Audi R8 | 2nd Gen Type 4S | Coupe | V10 | Rear lower | Direct replacement using the original mounting points |
| 2016-2018 Audi R8 | 2nd Gen Type 4S | Spyder | V10 | Rear lower | Direct replacement using the original mounting points |
| 2007-2015 Audi R8 Type 42 | 1st Gen Type 42 | Coupe and Spyder | V8 and V10 | Rear lower | Not compatible, the Type 42 body uses different German Rush parts |
Specifications
| Detail | Value |
|---|---|
| Manufacturer | German Rush |
| Manufacturer part number | GR8CFRD16 |
| Product type | Rear Diffuser |
| Material | Genuine carbon fiber |
| Construction method | Vacuum formed, not hand laid |
| Weave | 2x2 |
| Finish | Gloss UV resistant clear coat |
| Piece count | 1 |
| Mounting method | Bolt on at the factory mounting points |
| Position | Rear lower |
| Vehicle | 2016-2018 Audi R8 |
| Generation or trim | 2nd Gen Type 4S |
| Body styles covered | Coupe and Spyder |
| Engines covered | V10 |
| Shipping weight | 109 lb, 49.4 kg |
| Country of manufacture | United States, Lake Elsinore, California |
What's Included
- Carbon fiber rear diffuser, quantity 1
Order reference for this application is GR8CFRD16.
About German Rush
German Rush builds carbon fiber and fiberglass parts for exotic and European performance cars in Lake Elsinore, California. Every carbon panel is vacuum formed rather than hand laid, which is why the weave stays consistent from panel to panel and why the finish is specified as a 2x2 weave with a gloss clear coat similar to the carbon fiber the factory fitted. The range covers the Audi R8, the Lamborghini Aventador and Huracan, and the Jaguar F-Type, so a car can be built up in matching carbon over time.
Related Parts
FAQ
What is the GR8CFRD16?
It is the German Rush rear diffuser for the 2016-2018 Audi R8, supplied as a single piece and built as a direct replacement for the factory rear diffuser under the rear bumper.
Does this diffuser fit the first generation R8?
No. The Type 42 rear bumper is different and uses its own German Rush diffusers.
Does the Spyder use the same diffuser as the Coupe?
Yes, the 2016-2018 Coupe and Spyder share this rear diffuser.
Is this real carbon fiber or a carbon look finish?
It is genuine carbon fiber. The visible surface is a 2x2 weave finished in a gloss UV resistant clear coat chosen to sit alongside the carbon trim the factory fitted.
What is the advantage of vacuum forming over hand laid parts?
Vacuum forming compacts the laminate under pressure, which removes voids and keeps the weave straight across the panel. The result is a denser part with more repeatable thickness and a more consistent surface than a hand laid panel.
Does installation require cutting or drilling?
The part is built around the factory mounting locations, so the original panel comes off and this one goes on in its place. Professional installation is recommended, and minor prep or adjustment can be part of a normal fit.
Can it be painted or wrapped instead?
Yes. Pre fit the part to the car and confirm alignment before any paint, vinyl, or extra clear coat is applied, because a finished surface is much harder to correct afterwards.
Where is it made?
It is manufactured in the United States, in Lake Elsinore, California, where German Rush molds its carbon and fiberglass parts.
How should the shipment be checked on arrival?
Inspect the carton and the part before signing for the delivery. Note any crushed, torn, punctured, or broken condition on the freight bill in the driver's presence, because concealed damage found later is much harder to claim.
Installation Instructions
- Unpack the part, inspect it for transit damage, and confirm that part GR8CFRD16 matches the 2016-2018 Audi R8 application before any work starts.
- Park on a level surface and make the work area accessible, raising and supporting the car on stands or a lift when the part sits low on the body.
- Wash and dry the surrounding panels so grit does not scratch either part during the swap.
- Release the factory fasteners and clips that hold the factory rear diffuser under the rear bumper and remove the original part, keeping all hardware.
- Transfer any reusable clips or fasteners and clean the mating surfaces.
- Dry fit the new part and check gaps and alignment across the full width on both sides.
- Carry out any minor prep or trimming needed for an ideal fit while the part is still off the car.
- If the part is going to be painted or wrapped, complete the dry fit first, then finish it, then return to installation.
- Refit the part and tighten the fasteners evenly from the center outward so the panel is not pulled out of shape.
- Recheck alignment and panel gaps, then lower the car.
- Retorque or reseat any fastener that shifted after the first drive.
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