Rvng Designed 4” & 4.5” True Single Valved Exhaust System (G80/G82) S58
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Description
⚠️ (THIS PRODUCT IS FOR OFFROAD & RACE USE ONLY)
Not 50-state compliant — may not be legal for street use depending on your state's emissions laws. See our Off-Road Use Disclaimer for full details.
HOME OF THE ORIGINAL SINGLE QUAD TIPPED VALVED MUFFLER
EXHAUST BRACE INCLUDED
DEEPEST TONE POSSIBLE AND LARGEST EXHAUST FLOW ON THE MARKET
RVNG 4.5″ True Single Valved Quad-Tip Exhaust – G80/G82 M3 & M4
The Rvng Designed 4” & 4.5” True Single Valved Exhaust System (G80/G82) S58 is engineered to deliver exceptional airflow, aggressive sound, and race inspired performance. Featuring a massive 4.5-inch mandrel bent 304 stainless steel exhaust, this performance exhaust system maintains a true single design from front to back, reducing restriction and improving exhaust velocity for faster turbo response and increased performance.
Its intelligent valved exhaust system gives you the best of both worlds. With the valve open, exhaust gases flow through the unrestricted 4.5-inch path, producing a bold, aggressive exhaust note. Close the valve, and the system redirects flow through a quieter route, providing a refined driving experience with minimal drone during everyday cruising. Finished with RVNG signature quad perforated tips, it delivers both premium styling and outstanding performance.
Enhance your performance build with the Rvng (F80,F82,F87) Upgraded Heat Exchanger for improved cooling and reliability under demanding conditions. See more premium upgrades from Rvng RaceWorks, and follow us on Instagram to see customer builds, new product releases, and exclusive performance content.
Please not the valve and pipe near the valve is 3.5” as it’s impossible to create a 4.5” valve.
Features:
- First and only 4.5″ true single exhaust for the G80/G82 platform
- Valved system – Switch between aggressive, free-flowing sound and a quieter, refined tone. Our system utilizes oem valve functions just remove you oem valve and put it onto the system. Our systems are compatible with all aftermarket valve controllers but in our opinion the cleanest way to open the valve 100% while maintaining oem button function is through softwares likes Bootmod3 and MHD
- Gains in horsepower and torque when paired with a tune
- Mandrel-bent, TIG-welded 304 stainless steel for maximum durability
- Smooth, uninterrupted bends for maximum flow
- Signature RVNG quad perforated tips (available in multiple finishes)
- Designed to work with OEM or aftermarket downpipes
- Designed and tested in the USA
- RVNG Lifetime Warranty against defects and fitment issues
Compatibility:
- 2021+ BMW G80 M3
- 2021+ BMW G82 M4
DISCLAIMER
IF YOUR CAR IS VERY LOW TO THE FLOOR YOU MAY WANT TO WAIT FOR THE 4” VERSION
STOCK RIDE HEIGHT, H&R SPRINGS, AND MOST AFTERMARKET SPRINGS YOU WILL BE PERFECTLY FINE WITH THE 4.5”. WE ALWAYS COMPARE IT TO HAVE A NICE LIP ON YOUR CAR AND BEING A BIT LOW. YOU NEED TO UNDERSTAND HOW TO DRIVE DEPENDING ON YOUR SURROUNDINGS. THIS EXHAUST IS THE BEST SOUNDING AND PERFORMING BUT KEEP IN MIND IS THE LARGEST DIAMETER AVAILABLE, SO WITH THAT YOU WILL HAVE A LITTLE LESS UNDER-CAR CLEARANCE.
Rvng Designed 4” & 4.5” True Single Valved Exhaust System (G80/G82) S58
FAQs
Answers to our most common questions below.
How Long Does Shipping Take?
All RVNG items ship within 1-3 days. If an item is out of stock the customer will be notified with the choice of a refund or an estimated timeline of delivery.
Do You Have Exhaust Parts For My Car?
We make a range of performance parts but we do not have something for every car. We choose to specialize in specific markets so we can always ensure we are selling the best products possible. As a small company who designs all new products and stocks all our items its hard to sell something for everyone but as we grow we are always looking to expand our catalog!
Do You Offer In Person Pick-Up & Installs In Cali?
Yes, We are located in Garden Grove in Orange County, California. We invite any of our customers to pick-up in stock items and for any install or car related work.
Will Installing These Parts Void My Factory Warranty?
Aftermarket performance parts can affect your factory warranty on related components under the Magnuson-Moss Warranty Act a dealer must prove the part caused the failure to deny a claim. We recommend speaking with your dealer or tuner. Our parts are precision-engineered to factory tolerances and we stand behind every product with our own Lifetime Warranty against defects and fitment issues.
Do These Parts Require a Tune?
Some parts particularly downpipes, intake kits, and fuel system upgrades strongly benefit from an ECU tune to see full performance gains and to prevent check engine lights. Parts like heat exchangers, oil coolers, and hardware do not require a tune. We recommend reaching out to us or your local tuner before purchasing if you're unsure.
What Is Your Return Policy?
We accept returns within 30 days of delivery on unused, uninstalled, and undamaged items in original packaging. Custom or made-to-order parts are non-returnable. To start a return, contact us at contact@rvngraceworks.com with your order number. Return shipping is the customer's responsibility unless the item arrived damaged or incorrect.
How Do I Know This Will Fit My Car?
Every RVNG product is developed and validated on the specific platforms listed. If your exact build year, model, or configuration isn't listed, contact us before ordering — we'll confirm fitment. We stand behind every part with our Fitment Guarantee: if it doesn't fit as described, we'll make it right.
If you have any questions, we're always welcome to help. We'll get back to you within 24 hours on weekdays.
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Shipping Information
All orders ship within 1-3 business days from our Garden Grove, CA facility.
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Customer Support
We're here to help. Reach out anytime and we'll get back to you within 24 hours on weekdays.
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FAQ's
Check out our FAQ section below for answers to our most common questions.
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Contact Us
Located in Garden Grove, CA. Stop by for pickup or install appointments — we'd love to meet you.