Does the Fabspeed F8X Valvetronic Exhaust fit the M4 convertible?

No. It fits the F80 BMW M3 and the F82 M4 coupe with the 3.0L twin-turbo S55 engine, but it does not fit the F83 M4 convertible. Installation also requires light modification to the rear bracket because of interference with the cross-member, so confirm your body style before ordering.

How do the valves and sound work?

The system uses integrated muffler valves that mount to machined brackets for the factory actuators, so the car keeps its OEM switch between a quiet closed setting and an open one. The midpipe's two X sections scavenge the S55's exhaust pulses for stronger flow and the smoothest possible note, so it sounds bigger and cleaner rather than just louder.

How much power does it add?

On Fabspeed's dyno the system added 19 wheel horsepower and 31 lb-ft of torque at 3300 rpm in comparison to the Factory Equipment. The gains are strongest in the midrange, where the two-X midpipe frees up flow, so the S55 pulls harder out of corners and in everyday driving.

What is the F8X Valvetronic Exhaust made from?

It is built from 16-gauge, .065-inch CNC mandrel-bent T304L stainless steel in a 2.75-inch diameter, with a two-X-section midpipe and integrated muffler valves. It finishes in deluxe quad-style tips in your choice of polished stainless, carbon fiber, or satin black, and it ships with OEM gaskets for a direct bolt-on install.

Is it hard to install?

It bolts on as a direct replacement with the included OEM gaskets and retains the factory valve control, so the switch works as before. Installation does require light modification to the rear bracket because of cross-member interference, so many owners have it fitted by an experienced exhaust shop rather than installing it at home.

It mounts behind the factory emissions hardware, which stays in place, so it does not alter the car's catalytic converters or emissions equipment. With the valves closed it is refined and quiet for daily driving. Check your local noise and sound-level rules before installing, since those vary by area.

Description

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Description

Fabspeed Valvetronic Exhaust System for BMW F8X M3 / M4

The Fabspeed Valvetronic Exhaust System is a performance-oriented upgrade designed to significantly enhance your vehicle’s output, adding an impressive 19whp and 31ft/lbs of torque at 3300rpm. This system doesn’t just boost performance; it also elevates aesthetics with deluxe quad-style tips available in various finishes to suit your style. Its midpipe is ingeniously designed with two “x” sections to maximize exhaust scavenging, ensuring the smoothest possible exhaust note. Constructed from 16 gauge / .065″ thick CNC mandrel-bent T304L stainless steel in a 2.75″ diameter, it promises unparalleled durability. Moreover, the integrated muffler valves feature machined mounts for the factory actuators, maintaining the OEM valve functionality and offering a seamless blend of performance, quality, and convenience.

Features

Adds 19whp and 31ft/lbs of torque at 3300rpm
Includes deluxe quad-style tips in your choice of finish
Midpipe design includes two “x” sections for increased exhaust scavenging, resulting in the smoothest possible exhaust note
Constructed from 16ga / .065″ thick CNC mandrel-bent T304L stainless steel in 2.75″ diameter for the best durability
Integrated muffler valves include machined mounts for the factory actuators, allowing retention of factory valve functionality
OEM Gaskets Included
All Fabspeed performance products are backed by the Fabspeed lifetime warranty

Applications

BMW M3: F80 | 2015-2018 | 3.0L twin-turbo I6 S55
BMW M4: F82 | 2015-2020 | 3.0L twin-turbo I6 S55

Notes

All Fabspeed products are expected to ship within one week of order, though timelines are often much quicker
This product does not fit convertibles – requires light modification to rear bracket due to interference with cross-member

Frequently Asked Questions

Does the Fabspeed F8X Valvetronic Exhaust fit the M4 convertible? No. It fits the F80 BMW M3 and the F82 M4 coupe with the 3.0L twin-turbo S55 engine, but it does not fit the F83 M4 convertible. Installation also requires light modification to the rear bracket because of interference with the cross-member, so confirm your body style before ordering.
How do the valves and sound work? The system uses integrated muffler valves that mount to machined brackets for the factory actuators, so the car keeps its OEM switch between a quiet closed setting and an open one. The midpipe’s two X sections scavenge the S55’s exhaust pulses for stronger flow and the smoothest possible note, so it sounds bigger and cleaner rather than just louder.
How much power does it add? On Fabspeed’s dyno the system added 19 wheel horsepower and 31 lb-ft of torque at 3300 rpm in comparison to the Factory Equipment. The gains are strongest in the midrange, where the two-X midpipe frees up flow, so the S55 pulls harder out of corners and in everyday driving.
What is the F8X Valvetronic Exhaust made from? It is built from 16-gauge, .065-inch CNC mandrel-bent T304L stainless steel in a 2.75-inch diameter, with a two-X-section midpipe and integrated muffler valves. It finishes in deluxe quad-style tips in your choice of polished stainless, carbon fiber, or satin black, and it ships with OEM gaskets for a direct bolt-on install.
Is it hard to install? It bolts on as a direct replacement with the included OEM gaskets and retains the factory valve control, so the switch works as before. Installation does require light modification to the rear bracket because of cross-member interference, so many owners have it fitted by an experienced exhaust shop rather than installing it at home.
Is it street legal? It mounts behind the factory emissions hardware, which stays in place, so it does not alter the car’s catalytic converters or emissions equipment. With the valves closed it is refined and quiet for daily driving. Check your local noise and sound-level rules before installing, since those vary by area.

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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