Rvng 4” True Single G2X GEN2 & 3 M340/M440i Valved Exhaust system
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Description
In stock READY TO SHIP
(Exhaust Brace Included)
Please keep in mind on some of our old YouTube videos and content of the gen 2 b58 and s55 system there was a small squish on one of the pipes by the exhaust brace which allowed the oem brace to be used. We didn’t like this design and so we changed it and there is no longer a squish and the whole system remains a fluid 4”’s and comes with an extended brace.
There’s nothing on the market quite like our RVNG 4” True Single Valved Quad Tip Exhaust for the BMW M340i and M440i. Designed from the ground up for maximum flow and performance, this system replaces the factory dual-path exhaust with a full 4-inch single pipe, dramatically reducing backpressure and unlocking the true sound of the B58.
With the valves open, you’ll experience an aggressive, deep exhaust note and faster turbo spool thanks to the unrestricted single path. Close the valves, and you get a refined, quieter tone for comfortable daily driving.
Hand-built from high-grade stainless steel and finished with precision TIG welds, this exhaust is built to handle serious power while looking as good as it sounds. The quad tip setup gives a clean OEM-plus appearance, while the 4-inch main pipe ensures your M340i or M440i breathes freely, whether stock or heavily modified.
- True 4” single pipe design – Maximizes exhaust flow and reduces backpressure for improved performance.
- Valved system – Switch between aggressive, free-flowing sound and a quieter, refined tone.
- Quad tip setup – OEM-plus look with premium finish options.
- Faster turbo spool – Less restriction means quicker boost response.
- Hand-built construction – Precision TIG-welded from high-grade stainless steel.
- Compatible with M340i & M440i – Direct bolt-on fitment with no cutting or welding required.
- Designed for performance builds – Works great on stock turbos or big turbo setups.
ALSO FITS GRAN COUPE
Rvng 4” True Single G2X GEN2 & 3 M340/M440i Valved Exhaust system
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 downpipes and exhaust systems for almost all BMW's. We choose to specialize in that market so we can always insure we are selling the best product possible for your Beamer!
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 — will require or 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 rvngperformance@yahoo.com with your order number. Return shipping is the customer's responsibility unless the item arrived damaged or incorrect.
Are Your Catless Downpipes Street Legal?
Catless downpipes are intended for off-road and track use only. They are not emissions compliant and will trigger a check engine light without an appropriate tune or O2 spacers. If you need a street-legal option, contact us — we can discuss catted alternatives depending on your platform.
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.