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Description

Moshammer Rear Diffuser for 992.1 Porsche 911 Carrera

Moshammer Rear Diffuser was drawn for the 992 owner whose car left Zuffenhausen with the standard rear bumper, a specification the aftermarket routinely ignores. The blades channel airflow down onto the underbody, making use of conditions the car already provides rather than fighting them, and the resulting synergy with the flat 992 floor creates a negative ground effect, an inverted wing profile that helps balance the handling. Above the road it is pure OEM+, an evolution of the factory shape instead of a departure from it. Berlin makes each one to order and supplies it primed in satin black with mounting material and a TUV parts certificate (§19.3). On a model Porsche sells in real numbers, this is a quietly effective way to be in the minority.

Airflow Management

Rather than adding a shape and hoping, Moshammer used what the 992 already has. The diffuser channels air down to the smooth underbody and gives it a defined exit at the rear, and that relationship produces the negative ground effect described as an inverted wing profile. The benefit is balance: the car feels composed rather than merely quick.

OEM+ Character

The standard 992 rear bumper leaves a broad, flat area below the tail lights that the eye reads as unfinished once you have seen the alternative. This diffuser fills it with structure that looks entirely native to the car, which is what Moshammer means by evolutionary design. It is a change that photographs subtly and reads clearly in person.

Delivery and Approval

The article is delivered in satin black and includes its mounting material, so nothing else needs sourcing before installation. A TUV parts certificate (§19.3) is supplied with it, documenting the part properly for German road use. Everything mounts to existing points, leaving the bumper unmodified.

Features

Channels airflow down onto the smooth underbody
Creates a negative ground effect, an inverted wing profile
Delivered in satin black
Helps balance handling rather than only altering appearance
Made to order in Berlin in small batches
Mounting material included
No bumper cutting required for installation
OEM+ evolution of the factory rear shape
TUV parts certificate (§19.3) supplied

Applications

Porsche 911 Carrera: 992.1 | 2020-present
Porsche 911 Carrera S: 992.1 | 2020-present

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.
Developed for 992 Carrera models with the standard rear bumper. Cars with the Sport Design or GTS bumper take a different Moshammer diffuser, contact us to confirm which suits your car.
Supplied in satin black. A body shop can match it to your colour code before fitting if you prefer.
Each part is produced to order in Berlin, so allow production time before shipping
Professional installation is recommended, as the part is bonded as well as bolted

Frequently Asked Questions

Which 992 bumper does this suit? The standard rear bumper, as fitted to Carrera T, S and 4S cars specified without the Sport Design or GTS treatment. Sport Design and GTS bumpers take Moshammer’s other 992 diffuser.
Does it actually change how the car behaves? It works with the smooth 992 underbody to create a negative ground effect, the inverted wing profile Moshammer describes, which contributes to balancing the handling. It is a refinement, not a race aerodynamic device.
Does it arrive ready to fit? Yes. It is delivered in satin black with the mounting material included, so it can be installed as it comes or painted first.
Is there certification for road use? A TUV parts certificate (§19.3) is supplied with the diffuser, which is what German authorities expect to see for this class of component.

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 992.1 Porsche 911 Carrera

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Moshammer Rear Diffuser for 992.1 Porsche 911 Carrera

Airflow Management

OEM+ Character

Delivery and Approval

Features

Applications

Notes

Frequently Asked Questions

About Moshammer

Reviews