What vehicles does the Fi Exhaust G8X M3 system fit?

It's built for the BMW G80 M3 and G82 M4, including Competition and LCI models, both with the S58 twin-turbo inline-six, fitting both OPF and non-OPF models.

What's the difference between the two pipe versions?

You can choose a front/mid X-pipe configuration or a single front-mid pipe M-Performance version. Contact us if you'd like help choosing for your build.

Is a rear diffuser available to match?

Yes. A dry carbon fiber M-Performance style rear diffuser is available as a separate option for a coordinated look.

Can I control the valves remotely?

Yes. Valve operation integrates with the car's OEM controls by default, or can be upgraded to the Fi Pro app-connected remote for an additional $800.

How much does this exhaust cost?

Pricing ranges from $4,600 to $4,700 depending on pipe configuration, before downpipe, diffuser, tip finish, or remote options.

Description

Additional Info

Shipping policy

BP PRICING DIFFERENCE

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Description

Fi Exhaust M-Performance Valvetronic Exhaust System for G8x BMW M3 / M4

Fi Exhaust G8X M3 system is styled to match BMW’s own M-Performance parts, built for the BMW G80 M3 and G82 M4, including Competition and LCI models, and their S58 twin-turbo inline-six. Offered in a front/mid X-pipe version or a single front-mid pipe M-Performance version, the system is constructed from high-grade T304 stainless steel to enhance both sound and performance. Advanced valvetronic technology optimizes airflow, regulates sound volume, and increases torque; a full setup, including a valvetronic catback and ultra-high-flow downpipe, can boost horsepower by approximately 5-10%. With the valves closed, exhaust gases route through the muffler for a refined and comfortable drive, while fully open valves produce an intense and sporty exhaust note. The system fits both OPF and non-OPF models, and pairs with an available M-Performance-style dry carbon fiber rear diffuser for a matched, factory-inspired look.

Valve

Fi Exhaust systems universally incorporate valvetronic technology, enabling precise sound control while boosting vehicle performance. Prior to this innovation, achieving both high torque at low RPMs and greater horsepower at high RPMs was challenging. Valvetronic technology resolves this contradiction, allowing sports cars to excel in both areas and delivering a balanced yet dynamic exhaust performance.

Fi Exhaust Pro Control System

The Fi Exhaust Pro Control System includes an intelligent control box, a two-button remote, and a mobile app. The app prevents check engine lights, monitors valve status, and enables Auto Mode based on RPM, speed, or boost. The remote allows precise valve control, with a customizable aluminum or forged carbon design.

Features

Valvetronic technology for precise sound control
High-grade T304 stainless steel construction throughout
Increases horsepower by 5-10% when run with the complete system
Choice of front / mid X-pipe version or single front-mid pipe M-Performance version
Matching dry carbon fiber M-Performance style rear diffuser available as a separate option
Integrates with OEM controls or the optional Fi Pro App Remote
Sport and race downpipes available as separate options
Exhaust tips available in four finishes: titanium blue, diamond black, gold, carbon fiber

What’s Included

Valvetronic muffler
Quad tips

Applications

BMW M3: G80 | 2021-present | 3.0L Twin-Turbo I6 S58
BMW M3 Competition: G80 | 2021-present | 3.0L Twin-Turbo I6 S58
BMW M4: G82 | 2021-present | 3.0L Twin-Turbo I6 S58
BMW M4 Competition: G82 | 2021-present | 3.0L Twin-Turbo I6 S58

Notes

Fits OPF and non-OPF models

Frequently Asked Questions

What vehicles does the Fi Exhaust G8X M3 system fit? It’s built for the BMW G80 M3 and G82 M4, including Competition and LCI models, both with the S58 twin-turbo inline-six, fitting both OPF and non-OPF models.
What’s the difference between the two pipe versions? You can choose a front/mid X-pipe configuration or a single front-mid pipe M-Performance version. Contact us if you’d like help choosing for your build.
Is a rear diffuser available to match? Yes. A dry carbon fiber M-Performance style rear diffuser is available as a separate option for a coordinated look.
Can I control the valves remotely? Yes. Valve operation integrates with the car’s OEM controls by default, or can be upgraded to the Fi Pro app-connected remote for an additional $800.
How much does this exhaust cost? Pricing ranges from $4,600 to $4,700 depending on pipe configuration, before downpipe, diffuser, tip finish, or remote options.

About Fi Exhaust

Fi Exhaust is a premier aftermarket automotive exhaust brand specializing in high-performance systems for supercars, sports cars, and luxury vehicles. Serving renowned marques such as Lamborghini, Ferrari, McLaren, Porsche, Mercedes-AMG, BMW M, Audi, and Nissan, Fi Exhaust is dedicated to delivering superior sound and performance. The brand’s research and development team consistently engineers exhaust systems designed to perform flawlessly under all conditions, catering to enthusiasts who demand both exceptional sound and optimized performance. Each exhaust system is meticulously crafted to produce a distinctive tone, ranging from deep bass to an exotic, high-pitched, motorsport-inspired sound tailored to each vehicle model. Every system undergoes extensive testing and precise sound tuning to achieve peak performance and integrate seamlessly with the intelligent control system.

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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Fi EXHAUST M-Performance Valvetronic Exhaust System for G8x BMW M3 / M4

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Fi Exhaust M-Performance Valvetronic Exhaust System for G8x BMW M3 / M4

Valve

Fi Exhaust Pro Control System

Features

What’s Included

Applications

Notes

Frequently Asked Questions

About Fi Exhaust

Reviews