Rvng Designed 4.5” True Single Valved Exhaust System (G80/G82) S58

⚠️ (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-tip valved muffler.

Exhaust brace included. The deepest tone and largest exhaust flow on the market.

RVNG 4.5″ True Single Valved Quad-Tip Exhaust – G80/G82 M3 & M4

The Rvng Designed 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 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.

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 your 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 software like 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

Clearance note:

If your car sits very low, you may want to wait for the 4” version. At stock ride height, on H&R springs, and most aftermarket springs, you will be perfectly fine with the 4.5”. We compare it to running a nice front lip on a slightly lowered car — you need to drive with your surroundings in mind. This exhaust is the best sounding and performing option we make, but keep in mind it is the largest diameter available, so you will have a little less under-car clearance.