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Description

Moshammer Rear Diffuser for D4 Audi A8, S8

Moshammer Rear Diffuser takes the most restrained car in Audi’s D4 range and gives its rear the intent the S8 Plus always implied. The piece is cut precisely to the D4 valance, and its defining feature is compatibility with the RS 6 and RS 7 tailpipes, which turns a discreet limousine rear into something closer to Audi’s fast department. Moshammer’s Berlin bench builds each one to order and delivers it unpainted, so the finish remains entirely your decision, whether gloss black, body colour or a deliberate contrast. The RS pipes themselves are sourced separately, so the extent of the transformation stays your call. Nothing about the change is loud, which is the correct register for a car of this class. Fitted properly, most people will simply assume the car was ordered that way.

RS Tailpipe Compatibility

The standout property of this diffuser is that it accepts the RS 6 and RS 7 tailpipes, and that single detail reorganises the whole rear of the car. Swapping in the RS pipes alongside the diffuser gives a D4 A8 or S8 the more aggressive, sporting rear associated with Audi’s RS models. The tailpipes themselves are sourced separately, which keeps the decision, and the budget, in your hands.

Precision of Fit

Moshammer designs to the specific valance rather than to a generic shape, which is why the part covers A8, S8 and S8 Plus 4H D4 bodies without improvisation. That precision is the difference between a diffuser that looks integrated and one that looks applied. It is the same development approach the company uses on its Porsche range, applied to a larger and more formal car.

Your Choice of Finish

The article is delivered unpainted, ready for the finish that suits your specification. A gloss or satin black reads as a factory sport option on a dark car, while colour matching lets the diffuser disappear into the bodywork and do its work quietly. Whichever route you take, have the paint done before installation.

Features

Compatible with RS 6 and RS 7 tailpipes
Delivered unpainted for a body shop finish
Insert-style diffuser shaped to the factory D4 rear valance
Made to order at Moshammer in Berlin
Precise design for a close factory fit
RS tailpipes are not part of the delivery
RS-inspired rear presence without a full body kit
Single moulded component with no additional trim needed

Applications

Audi A8: D4 | 2011-2017
Audi S8: D4 | 2011-2017

Notes

Moshammer parts ship directly from Germany. Import taxes, duties, and tariffs may apply upon delivery and are the responsibility of the buyer. These fees are neither collected nor paid by Bulletproof Automotive.
The RS 6 and RS 7 tailpipes are not included in the delivery. They are sourced separately, contact us if you would like help locating a set.
Delivered unpainted, so plan for paint or a satin finish before installation
Made to order in Berlin, which means a production wait rather than immediate dispatch
Professional fitting is recommended so the diffuser sits flush with the valance

Frequently Asked Questions

Do I have to fit RS tailpipes? No. The diffuser works with the standard exhaust outlets, but it is designed to accept the RS 6 and RS 7 tailpipes for owners who want the full RS-style rear.
Does it fit the S8 Plus? Yes. The application covers A8, S8 and S8 Plus models on the 4H D4 platform, thanks to the precise design of the part.
What finish does it arrive in? Unpainted. Most owners either colour match it to the car or specify gloss or satin black, depending on how prominent they want the rear to look.
Is this a full bumper or an insert? It is a diffuser that works with your existing rear valance, so the factory bumper stays on the car.

About Moshammer

Moshammer Automotive is a Berlin-based manufacturer of OEM+ aerodynamic refinement for Porsche, with a smaller line for Mini, Audi, BMW, and Mercedes-Benz. The house style is restraint with intent: parts drawn to look as though the factory had gone one step further, developed against original mounting points, TUV-documented where German road use demands it, and produced in small batches rather than stocked in volume. Their catalog spans single accents such as vent grills and wing end blades through complete Downforce and Tradition RS aero programs, alongside a range of multipiece forged wheels made to order in any size, width, and finish.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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Moshammer Rear Diffuser for D4 Audi A8, S8

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Moshammer Rear Diffuser for D4 Audi A8, S8

RS Tailpipe Compatibility

Precision of Fit

Your Choice of Finish

Features

Applications

Notes

Frequently Asked Questions

About Moshammer

Reviews