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Description

Moshammer Turbo Rear Diffuser for 997 Porsche 911 Turbo & Turbo S

Moshammer Turbo Rear Diffuser keeps a 997 Turbo current without dating it, a narrow line to walk on a car now firmly regarded as a modern classic. The engineering behind it is straightforward and honest: the diffuser works with the 997 Turbo’s smooth underbody to create a negative ground effect, the inverted wing profile that helps stabilise handling as speed rises. Visually it stays in OEM+ territory, adding definition below the bumper where the standard car is simply flat. Moshammer still produces it in Berlin to order, unpainted, with mounting material and a TUV parts certificate (§19.3). For an owner preserving a 997 rather than modifying it, that combination of restraint and documentation is the whole appeal.

Negative Ground Effect

The 997 Turbo left the factory with a notably smooth underbody, and this diffuser is designed to exploit it. Together they create a negative ground effect, the inverted wing profile that helps stabilise handling rather than simply looking purposeful. It is honest aerodynamics on a car that responds well to it.

Modern Classic Restraint

A 997 Turbo is now valued for being what it is, so anything fitted to it has to respect the original design. Moshammer’s OEM+ approach adds structure and shadow below the bumper without introducing a modern styling language the car never had. Fitted well, it looks like a period-correct Porsche option.

Fitting and Finish

The article is delivered unpainted with mounting material, so the finish can be specified to suit an original car. Installation uses the original screw points together with glue, and a TUV parts certificate (§19.3) is supplied with the part. Each one is made to order in Berlin.

Features

Adds definition where the standard lower rear is flat
Creates a negative ground effect, an inverted wing profile
Delivered unpainted
Helps stabilise handling at speed
Installed at original screw points with glue
Made to order in Berlin
Mounting material included
OEM+ design element in keeping with the original car
TUV parts certificate (§19.3) supplied
Works with the smooth 997 Turbo underbody

Applications

Porsche 911 Turbo: 997.1, 997.2 | 2005-2012
Porsche 911 Turbo S: 997.1, 997.2 | 2005-2012

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.
Delivered unpainted. On an original car, a colour code match or satin black usually looks the most period correct.
Installation uses the original screw points plus glue, so professional fitting is recommended
Produced to order in Berlin, contact us for the current lead time before you book paint
Supplied with a TUV parts certificate (§19.3) for the component

Frequently Asked Questions

Does it suit both 997.1 and 997.2 Turbo cars? The application covers 997 Turbo and Turbo S models. Send us your VIN if you want the specification confirmed before ordering.
How does it affect handling? Working with the smooth 997 Turbo underbody, the diffuser creates a negative ground effect that helps stabilise the car. It is a refinement rather than a race aerodynamic device.
Will it look out of place on an original car? It is developed as an OEM+ part, so the shape follows Porsche’s own language. On a well-kept 997 it reads as a factory option rather than a modification.
What is supplied with the diffuser? It arrives unpainted with the mounting material and a TUV parts certificate (§19.3).

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 Turbo Rear Diffuser for 997 Porsche 911 Turbo & Turbo S

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Moshammer Turbo Rear Diffuser for 997 Porsche 911 Turbo & Turbo S

Negative Ground Effect

Modern Classic Restraint

Fitting and Finish

Features

Applications

Notes

Frequently Asked Questions

About Moshammer

Reviews