What is the Fabspeed G8X Intermediate X-Pipe for the M3 and M4?

It is a mid-pipe that replaces the restrictive factory double-H section with two signature investment-cast X-pipes, built for the S58-powered G80 BMW M3 and G82 M4. It adds tone, volume, and a touch more power, cuts 5 pounds, and is engineered without cruising drone. It is emissions-legal in all 50 states and installs with no check engine light.

Does it fit the BMW M2?

No. This is the X-pipe for the G80 M3 and G82 M4; the G87 BMW M2 uses its own Fabspeed intermediate X-pipe. This one fits every S58 M3 and M4 variant, including Competition models and both xDrive all-wheel-drive and rear-wheel-drive cars, so confirm your model before ordering.

How does it sound, and does it drone?

On the throttle it is louder and sharper than the muted factory mid-pipe, with a pleasant idle burble and crisper downshift pops and bangs in sport mode, louder but not obnoxious. Fabspeed designed the X-pipe to eliminate cruising drone, so it stays comfortable on the highway and around town for daily driving.

Does it add power, and does installation require cutting?

It adds tone, volume, and a modest power increase from the freer-flowing dual X-pipe, though Fabspeed does not publish a specific horsepower figure for the mid-pipe on its own. Installation does require minor trimming at the factory exhaust breakpoint, using the OEM dimple locations as a guide, so many owners have it fitted by an exhaust shop.

Yes. The X-pipe installs in the mid-section behind the factory catalytic converters, so it does not alter any emissions equipment. Fabspeed lists it as emissions-legal in all 50 states with a no-check-engine-light guarantee. As always, check your local noise rules, but this is a street-friendly upgrade rather than a race part.

What pairs with the G8X Intermediate X-Pipe?

For more power upstream, pair it with the Fabspeed Sport Cat Downpipes for the G8X M2, M3, and M4, which add flow and a no-CEL power gain. Combined with a Fabspeed rear exhaust for the M3 or M4, the X-pipe completes a flow-matched exhaust from the downpipes back.

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Description

Fabspeed Supersport Intermediate X-Pipe for BMW G8X M3 / M4

The Fabspeed BMW M3 and M4 Intermediate X-Pipe offers a significant “plug and play” improvement upon the restrictive and quiet original OEM double “H” pipe. It brings about a substantial boost in tone, volume, and power courtesy of its double x-pipe configuration, incorporating two cast x-pipes. This setup leads to a modest increase in volume when accelerating and delivers a satisfying burble at a standstill. Additionally, the system enhances the audibility of downshift pops and bangs in sport mode, increasing their volume to a level that is noticeable yet not overbearing. Importantly, this system is engineered to avoid drone, facilitating a smooth and pleasant driving experience whether navigating through the city or cruising on the highway.

Features

Signature investment cast x-pipes for maximum flow and exhaust scavenging
Light weight design saves 5lbs (2.2kgs) compared the factory system
Constructed from CNC mandrel-bent 14-16 gauge T304L stainless steel
Laser scanned and CAD designed for perfect OEM fitment
Backed by the Fabspeed lifetime warranty

Applications

BMW M3: G80 | 2021-present | 3.0L twin-turbo I6 S58
BMW M4: G82 | 2021-present | 3.0L twin-turbo I6 S58

Notes

All Fabspeed products are expected to ship within one week of order, though timelines are often much quicker
Minor cutting at factory exhaust breakpoint required to install (reference dimple locations on OEM)
X-pipe is designed to fit competition models, AWD or RWD variants

Frequently Asked Questions

What is the Fabspeed G8X Intermediate X-Pipe for the M3 and M4? It is a mid-pipe that replaces the restrictive factory double-H section with two signature investment-cast X-pipes, built for the S58-powered G80 BMW M3 and G82 M4. It adds tone, volume, and a touch more power, cuts 5 pounds, and is engineered without cruising drone. It is emissions-legal in all 50 states and installs with no check engine light.
Does it fit the BMW M2? No. This is the X-pipe for the G80 M3 and G82 M4; the G87 BMW M2 uses its own Fabspeed intermediate X-pipe. This one fits every S58 M3 and M4 variant, including Competition models and both xDrive all-wheel-drive and rear-wheel-drive cars, so confirm your model before ordering.
How does it sound, and does it drone? On the throttle it is louder and sharper than the muted factory mid-pipe, with a pleasant idle burble and crisper downshift pops and bangs in sport mode, louder but not obnoxious. Fabspeed designed the X-pipe to eliminate cruising drone, so it stays comfortable on the highway and around town for daily driving.
Does it add power, and does installation require cutting? It adds tone, volume, and a modest power increase from the freer-flowing dual X-pipe, though Fabspeed does not publish a specific horsepower figure for the mid-pipe on its own. Installation does require minor trimming at the factory exhaust breakpoint, using the OEM dimple locations as a guide, so many owners have it fitted by an exhaust shop.
Is it street legal? Yes. The X-pipe installs in the mid-section behind the factory catalytic converters, so it does not alter any emissions equipment. Fabspeed lists it as emissions-legal in all 50 states with a no-check-engine-light guarantee. As always, check your local noise rules, but this is a street-friendly upgrade rather than a race part.
What pairs with the G8X Intermediate X-Pipe? For more power upstream, pair it with the Fabspeed Sport Cat Downpipes for the G8X M2, M3, and M4, which add flow and a no-CEL power gain. Combined with a Fabspeed rear exhaust for the M3 or M4, the X-pipe completes a flow-matched exhaust from the downpipes back.

About Fabspeed

Fabspeed Motorsport is situated in Fort Washington, Pennsylvania, within the United States of America. Their extensive 26,000 sqft. facility serves as a hub for various car clubs, including Porsche Club of America, Ferrari, McLaren, Lamborghini, and more. The company is renowned for its comprehensive approach to product development. They handle the entire process, from design and engineering to dyno testing, street trials, and racing assessments, ensuring the quality and performance of every item. Fabspeed also collaborates closely with race engine builders and tuners hailing from Italy, Germany, and the United States, resulting in the creation of the Ultimate Performance parts. To cater to their passionate global audience, Fabspeed meticulously crafts systems using aerospace-grade austenitic stainless steel, titanium, and carbon fiber materials, setting a standard for excellence in the industry.

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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