Description
Upgrade the sound, character, and driving experience of your BMW G20/G21 M340i B58 with the DCE Parts Valvetronic Catback Exhaust. Engineered specifically for the B58-powered M340i, this high-performance exhaust system combines premium construction, adjustable valve technology, and excellent everyday drivability.
Manufactured from high-grade stainless steel, the DCE Parts Valvetronic Catback Exhaust is designed to deliver an enhanced exhaust note while maintaining a refined and comfortable driving experience. With the valves closed, the system provides a more controlled and subdued exhaust tone, making it well suited for daily driving, commuting, and highway cruising.
When the valves are opened, the exhaust produces a deeper, louder, and more aggressive exhaust note, allowing the M340i's B58 engine to deliver a more engaging and sporty sound under acceleration. This adjustable design gives drivers the flexibility to enjoy a quieter exhaust character when desired and a more performance-oriented sound when driving enthusiastically.
Electronic or Vacuum-Controlled Valves
The DCE Parts Valvetronic Catback Exhaust can be configured with either electronically controlled or vacuum-controlled exhaust valve actuators, providing flexibility depending on the desired installation and control setup.
The exhaust valves are operated through a dedicated controller system, keeping the valve-control system independent from the vehicle's brake system. This helps prevent unwanted changes in brake pedal feel that may occur when exhaust valve operation shares the vehicle's brake vacuum system.
The high-quality exhaust valves and actuators are designed for durability and reliable operation, providing a practical balance between comfort, sound control, and performance.
Premium Construction
The exhaust system is manufactured from high-grade stainless steel for durability, corrosion resistance, and long-term reliability. For enthusiasts looking for a lightweight premium-material option, titanium construction is available as an optional upgrade.
Optional exhaust tips are also available, allowing you to further customize the appearance of your M340i and complement its aggressive exterior styling.
Key Features
- Designed specifically for BMW G20/G21 M340i B58
- High-grade stainless steel construction
- Optional titanium construction available
- Electronic or vacuum-controlled exhaust valves
- Dedicated valve controller
- Includes remote controls
- Includes vacuum hoses
- Includes 12V power supply
- Adjustable exhaust sound
- Refined and comfortable operation with valves closed
- Sportier and more aggressive exhaust note with valves open
- Durable and reliable valve system
- Optional exhaust tips available
- Catback exhaust configuration
Fitment
Designed for the following BMW 3 Series M Performance applications:
- BMW G20 M340i B58
- BMW G21 M340i B58
The G20 is the 3 Series Sedan, while the G21 is the 3 Series Touring/Wagon.
Additional Performance Upgrade
DCE Parts also offers a BMW B58 Downpipe for the G20/G21 M340i B58. Combining the downpipe with a compatible exhaust system can further alter exhaust flow and sound.
OPF/GPF Information
For vehicles equipped with an OPF/GPF emissions system, an ECU remap may be required when making certain exhaust modifications. OPF delete applications are intended for off-road use only. Always verify applicable emissions, noise, and vehicle regulations before installation or use.
Important Legal & Emissions Notice
Certain exhaust components and tuning products may alter, bypass, or remove emissions-control systems. These products may be intended for off-road, race, motorsport, or competition use only and may not be legal for use on public roads in your country or region.
It is the buyer's responsibility to verify compliance with all applicable local, state, and federal laws and regulations before purchasing, installing, or operating the product.
For vehicles operated in the United States, installation or use of emissions-related modifications on pollution-controlled vehicles may violate the U.S. Clean Air Act and could result in significant fines or penalties. Use these products only where permitted by applicable law.
The standard shipping rate applies to orders within the continental United States. If you intend to place an order outside of the continental US, please reach out to support@x-ph.com for assistance.
