In Northern California? Get this professionally set up & installed!
These federal EPA-compliant 400-cell catted downpipes give your G8X M2, M3 or M4 better exhaust flow, quicker turbo response and more sound without going catless. They are made specifically for the twin-turbo S58, with one downpipe and catalyst for each turbo.
The 400-cell catalysts are less restrictive than the factory units, helping both turbos breathe better while adding a deeper exhaust tone and more noticeable turbo sound. You can run them with the factory exhaust for a smaller change in sound, or pair them with an aftermarket exhaust when you want to hear more of the S58.
Please Note: EPA compliant does not mean CARB legal or 50-state legal. These downpipes are for federally certified vehicles and cannot be sold for vehicles registered in California or other states that require CARB compliance.
Fitment Information
- 2023 BMW M2 G87 3.0L Twin-Turbo S58
- 2024 BMW M2 G87 3.0L Twin-Turbo S58
- 2025 BMW M2 G87 3.0L Twin-Turbo S58
- 2026 BMW M2 G87 3.0L Twin-Turbo S58
- 2021 BMW M3 G80 3.0L Twin-Turbo S58
- 2022 BMW M3 G80 3.0L Twin-Turbo S58
- 2023 BMW M3 G80 3.0L Twin-Turbo S58
- 2024 BMW M3 G80 3.0L Twin-Turbo S58
- 2025 BMW M3 G80 3.0L Twin-Turbo S58
- 2026 BMW M3 G80 3.0L Twin-Turbo S58
- 2021 BMW M4 Coupe G82 3.0L Twin-Turbo S58
- 2022 BMW M4 Coupe G82 3.0L Twin-Turbo S58
- 2023 BMW M4 Coupe G82 3.0L Twin-Turbo S58
- 2024 BMW M4 Coupe G82 3.0L Twin-Turbo S58
- 2025 BMW M4 Coupe G82 3.0L Twin-Turbo S58
- 2026 BMW M4 Coupe G82 3.0L Twin-Turbo S58
- 2021 BMW M4 Convertible G83 3.0L Twin-Turbo S58
- 2022 BMW M4 Convertible G83 3.0L Twin-Turbo S58
- 2023 BMW M4 Convertible G83 3.0L Twin-Turbo S58
- 2024 BMW M4 Convertible G83 3.0L Twin-Turbo S58
- 2025 BMW M4 Convertible G83 3.0L Twin-Turbo S58
- 2026 BMW M4 Convertible G83 3.0L Twin-Turbo S58
Fitment Notes
- Fits rear-wheel-drive and xDrive models with the S58 engine.
- Fits standard and Competition models.
- This set is made for the G8X S58 platform and does not fit B58-powered BMW models.
- These replace both factory downpipes and catalytic converters.
- Professional installation is recommended.
Federal EPA Compliant
- Federal EPA-compliant 400-cell catalytic converters
- Designed for vehicles built and registered to Federal EPA emissions standards
- Keeps catalytic converters in place while providing more flow than the factory downpipes
- Not CARB exempt and not legal for vehicles registered in California
- Not legal for vehicles registered in other states that require CARB-approved replacement catalytic converters
- These are not 50-state-legal downpipes
- Check your state and local emissions requirements before ordering
Specs & Features
- Complete pair of left and right S58 downpipes
- 400-cell high-flow catalytic converter in each downpipe
- High-grade stainless steel construction
- Mandrel-bent tubing with smooth internal transitions
- Reduces exhaust restriction compared to the factory downpipes
- Helps improve turbo response and midrange power delivery
- Adds a deeper exhaust tone and louder turbo sound
- Precision TIG-welded construction
- OEM-style oxygen sensor placement
- Direct bolt-on design using the factory mounting locations
- Designed for stock and tuned S58 applications
- Compatible with the factory exhaust and compatible aftermarket exhaust systems
- Part number: BMW.G8X.M2.M3.M4.FF.400C.BR
What to Expect From the Sound
- Factory Exhaust: Deeper sound with more turbo noise and a clearer exhaust note without replacing the rest of the system.
- Aftermarket Exhaust: Louder overall sound with stronger turbo noise, more noticeable crackles and a sharper sound higher in the RPM range.
Warranty
- Catalysts: 25,000-mile limited emissions and OBD-II compatibility warranty
- Catalytic converter shells and connecting pipes: Five-year or 50,000-mile limited warranty against defective welding and corrosion
- Stainless tubing and welds: Limited lifetime-of-ownership warranty against manufacturing defects and penetrating rust
- Warranty coverage applies to the original purchaser and is not transferable
Pairs Well With
- AWE 0FG Exhaust for BMW G80 M3 and G82/G83 M4 – Pair the 400-cell downpipes with a full catback when you want a much bigger change in sound. Choose the SwitchPath version if you still want valve control.
- MAD Dual Front-Mount Intakes for BMW G8X – Open up the intake side of the S58 and add more turbo sound to go with the freer-flowing downpipes.
- Mishimoto S58 Charge-Air Cooler – Add more cooling capacity for a tuned G8X that sees repeated pulls, track time or hard driving in warmer weather.
About Valvetronic Designs
Valvetronic Designs makes exhaust parts for people who want more sound and better flow without turning the car into something they do not want to drive every day. These G8X downpipes work with the factory exhaust or a compatible aftermarket system, giving you room to decide how far you want to take the sound.
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Ordering from Redline360
Redline360 is an Authorized Dealer so we only sell authentic and genuine parts and accessories.
Order updates, tracking and info
Our goal is your complete satisfaction. Upon ordering, you will receive an email confirmation of your order along with your invoice. You will be able to log into our website 24/7 to check on your order at any time. Your order is processed Monday through Friday from 8am to 6pm PST as soon as it is placed. Once your order ships, we will email you a tracking number so you can track your package.
Protect your purchase
Redline360 offers our customers piece of mind! We have partned with Extend to offer you Extend Product Protection and Extend Shipping Protection. Read about each protection that Extend offers to Redline360 customers!
Multiple distribution points ready to serve you!
We ship from multiple locations around the United States so you receive your part as quick as possible. Not every warehouse stocks all the same parts, so the closest warehouse to you that has the part in stock is where your order will ship from. We ship from California, Nevada, Indiana, Michigan, Florida, Texas and Pennsylvania.
Secure Ordering
We take security seriously! We are never exposed to your credit card information, and it's never stored. Credit card transactions go through the credit card processor directly. We also offer various other payment methods such as PayPal, Affirm Financing (Pay over time), Amazon Pay, Apple Pay and more!
Any non CARB compliant items can not ship California. We will notify you if we have to cancel your order.
Some products may be subject to local rules, laws and regulations in certain areas. Always check your local laws to determine legal restrictions. We are not responsible if you buy a product that is not legal in your area.
For items that have free shipping, free shipping only applies to the lower 48 states.
Questions? Contact us.
Actual item may vary from picture
Redline360 is an Authorized Dealer so we only sell authentic and genuine parts and accessories.
Order updates, tracking and info
Our goal is your complete satisfaction. Upon ordering, you will receive an email confirmation of your order along with your invoice. You will be able to log into our website 24/7 to check on your order at any time. Your order is processed Monday through Friday from 8am to 6pm PST as soon as it is placed. Once your order ships, we will email you a tracking number so you can track your package.
Protect your purchase
Redline360 offers our customers piece of mind! We have partned with Extend to offer you Extend Product Protection and Extend Shipping Protection. Read about each protection that Extend offers to Redline360 customers!
Multiple distribution points ready to serve you!
We ship from multiple locations around the United States so you receive your part as quick as possible. Not every warehouse stocks all the same parts, so the closest warehouse to you that has the part in stock is where your order will ship from. We ship from California, Nevada, Indiana, Michigan, Florida, Texas and Pennsylvania.
Secure Ordering
We take security seriously! We are never exposed to your credit card information, and it's never stored. Credit card transactions go through the credit card processor directly. We also offer various other payment methods such as PayPal, Affirm Financing (Pay over time), Amazon Pay, Apple Pay and more!
Any non CARB compliant items can not ship California. We will notify you if we have to cancel your order.
Some products may be subject to local rules, laws and regulations in certain areas. Always check your local laws to determine legal restrictions. We are not responsible if you buy a product that is not legal in your area.
For items that have free shipping, free shipping only applies to the lower 48 states.
Questions? Contact us.
Actual item may vary from picture