Rvng Gen 1 B58 340i & 440i Midpipe

⚠️ (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.

RVNG B58 Performance Midpipe

Unlock the sound your B58 was meant to have with the RVNG Performance Midpipe for Gen 1 B58 BMW 340i and 440i models.

Designed to replace the restrictive factory midpipe section and eliminate the OEM resonators, the RVNG Midpipe delivers a deeper, louder, and more aggressive exhaust note while retaining the factory rear muffler and valve functionality. The result is a substantial increase in sound when you want it without turning the car into something unpleasant to drive every day.

At the center of the system is our 3.4-inch single midpipe, a diameter we selected specifically to provide the best balance between exhaust flow, performance, ground clearance, and proper chassis fitment. Going larger isn’t always better when packaging becomes compromised—the 3.4” design gives the B58 increased exhaust volume and flow while allowing the system to fit cleanly underneath the vehicle.

With the factory valved muffler retained, you can still change the personality of the car depending on the drive mode. Keep things more refined while cruising, then open the valves and let the B58 come alive when you want to hear it.

Features

• 3.4” high-flow single midpipe design
• Removes the factory resonators
• Deeper and more aggressive B58 exhaust tone
• Designed for an optimal balance of flow, performance, and fitment
• Retains the OEM rear muffler and exhaust valve functionality
• Increased volume without requiring a full cat-back exhaust
• Direct-fit design for compatible Gen 1 B58 340i & 440i models

More sound. Better flow. Proper fitment.
The RVNG B58 Performance Midpipe gives the Gen 1 B58 the aggressive exhaust character it should have had from the factory.