What comes in the Fabspeed Turbo Back Exhaust Package for the M3 and M4?

The package combines Fabspeed's Sport Cat Downpipes, the intermediate X-pipe, and the Valvetronic rear exhaust, matched to work as one system from the turbos back, plus deluxe quad tips in your choice of finish. The downpipes use HJS 200-cell sport catalytic converters and the rear uses aerospace-grade UK Helical valves, so you get flow, sound, and switchable volume in one buy.

Which cars does the package fit?

It fits the G80 BMW M3 and G82 M4 with the 3.0L twin-turbo S58 engine, from 2021 onward, including Competition models and both xDrive all-wheel-drive and rear-wheel-drive cars. The G87 M2 uses its own Fabspeed parts, so confirm your model before ordering.

How much power and weight does the package change?

On Fabspeed's in-house DynoJet the full turbo-back system added 41 wheel horsepower and 47 lb-ft at the wheels, about 47 horsepower at the crank, with the gains spread across the power band. It also drops 10 pounds versus the factory system. The Sport Cat Downpipes, X-pipe, and rear exhaust each contribute, which is why the combined gain is larger than any one piece.

Does it throw a check engine light, and is it CARB legal?

No check engine light. The Sport Cat Downpipes use genuine HJS 200-cell catalytic converters, so the S58 keeps its emissions readiness and runs without a fault code. However, the package is not CARB approved and is not for sale in California or other states that require CARB certification, so check your local rules before ordering.

It gives the S58 a throaty straight-six voice with overrun pops and burbles in the most aggressive M mode, and the turbochargers become audible on deceleration. In comfort mode the valves close for a quieter, more civil tone, so you can switch between an everyday setting and a track-day roar at the press of the factory controls.

Is it hard to install?

Every piece bolts on and retains the factory valve control, but this is a full turbo-back install and it requires minor trimming at the factory exhaust breakpoint, using the OEM dimple locations as a guide. Because of the scope, most owners have the package fitted by an experienced exhaust shop rather than installing it at home.

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Description

Fabspeed Turbo Back Exhaust Package for BMW G8X M3 / M4

The journey begins with the Sport Cat Downpipes, incorporating high-quality HJS catalysts. This selection ensures optimal exhaust flow, durability, and acoustics. Following this, the unique intermediate x-pipe comes into play, equipped with dual x-pipes to ensure proper exhaust scavenging and a balanced sound profile. The culmination is the Valvetronic exhaust system, boasting U.K.-sourced Helical Valves that integrate seamlessly with the factory valve controllers. This setup promises an uncompromised blend of sound enhancement and performance enhancement.

Sound

Listeners are treated to the legendary symphony of the BMW straight-six engine. The exhaust note transforms, adopting a throaty quality that perfectly complements the engine’s 500 horsepower. In the most aggressive M setting, the exhaust resonates with a deep, commanding presence, accentuated by pronounced overrun pops and burbles. The turbochargers become audible when decelerating, adding to the auditory experience. When switched to comfort mode, the system adopts a more subdued demeanor, allowing for unintrusive in-cabin conversations, mirroring the quietness of the original exhaust system.

Power

The comprehensive Turbo Back Exhaust Package significantly enhances exhaust flow on the G8x models. Testing on an in-house DynoJet revealed substantial gains: an increase of 47ft/lbs of torque at 3,300rpm and 41whp at 6,500rpm, equivalent to 47 crank horsepower. The accompanying dyno graph illustrates that these power gains are distributed evenly across the entire rev range, marking a significant improvement over the stock setup.

Features

Midpipe design includes two investment cast “X” sections for increased exhaust scavenging, resulting in a throaty exhaust note with the least amount of rasp
Light weight design saves 10 lbs (4.5kgs) compared the factory system
HJS HD tri-metallic 200-cell sport cats for performance and reliability
Uses aerospace quality Helical Limited exhaust valves imported from the U.K.
Constructed from CNC mandrel-bent 14-16 gauge T304L stainless steel
Laser scanned and CAD designed for perfect OEM fitment using Ametek Handyscan 700
Retains factory valve functionality for “plug and play” installation
No check engine light, guaranteed
Simple bolt-on installation, no cutting or welding required
All Fabspeed performance products are backed by the Fabspeed lifetime warranty

What’s Included

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)
Exhaust system is designed to fit competition models, AWD or RWD variants

Frequently Asked Questions

What comes in the Fabspeed Turbo Back Exhaust Package for the M3 and M4? The package combines Fabspeed’s Sport Cat Downpipes, the intermediate X-pipe, and the Valvetronic rear exhaust, matched to work as one system from the turbos back, plus deluxe quad tips in your choice of finish. The downpipes use HJS 200-cell sport catalytic converters and the rear uses aerospace-grade UK Helical valves, so you get flow, sound, and switchable volume in one buy.
Which cars does the package fit? It fits the G80 BMW M3 and G82 M4 with the 3.0L twin-turbo S58 engine, from 2021 onward, including Competition models and both xDrive all-wheel-drive and rear-wheel-drive cars. The G87 M2 uses its own Fabspeed parts, so confirm your model before ordering.
How much power and weight does the package change? On Fabspeed’s in-house DynoJet the full turbo-back system added 41 wheel horsepower and 47 lb-ft at the wheels, about 47 horsepower at the crank, with the gains spread across the power band. It also drops 10 pounds versus the factory system. The Sport Cat Downpipes, X-pipe, and rear exhaust each contribute, which is why the combined gain is larger than any one piece.
Does it throw a check engine light, and is it CARB legal? No check engine light. The Sport Cat Downpipes use genuine HJS 200-cell catalytic converters, so the S58 keeps its emissions readiness and runs without a fault code. However, the package is not CARB approved and is not for sale in California or other states that require CARB certification, so check your local rules before ordering.
How does it sound? It gives the S58 a throaty straight-six voice with overrun pops and burbles in the most aggressive M mode, and the turbochargers become audible on deceleration. In comfort mode the valves close for a quieter, more civil tone, so you can switch between an everyday setting and a track-day roar at the press of the factory controls.
Is it hard to install? Every piece bolts on and retains the factory valve control, but this is a full turbo-back install and it requires minor trimming at the factory exhaust breakpoint, using the OEM dimple locations as a guide. Because of the scope, most owners have the package fitted by an experienced exhaust shop rather than installing it at home.

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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Fabspeed Turbo Back Exhaust Package for BMW G8X M3 / M4 [FS.BMW.G8X.PKGXX]

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Fabspeed Turbo Back Exhaust Package for BMW G8X M3 / M4

Sound

Power

Features

What’s Included

Applications

Notes

Frequently Asked Questions

About Fabspeed

Reviews