G20/G22 M340i & M440i Valved Cat-Back Exhaust
The factory exhaust system on the B58 platform is designed for comfort and emissions, limiting both sound and exhaust flow. This valved cat-back exhaust system improves exhaust flow, enhances throttle response, and delivers a deeper, more aggressive exhaust tone.
With integrated valve control, you can switch between a refined, quiet sound for daily driving and a more aggressive tone when you want it. The system is designed to maintain minimal drone while providing a noticeable increase in sound and performance.
Key Features
- Direct OEM fitment
- Valved exhaust system with dynamic sound control
- Improved exhaust flow and reduced restriction
- Deeper, more aggressive exhaust tone
- Minimal drone during cruising
- Mandrel-bent 304 stainless steel construction
- Precision TIG-welded for durability
- Quad exhaust tip configuration
- Compatible with factory and aftermarket downpipes
Build Quality
Constructed from 304 stainless steel with precision welds and smooth transitions to ensure durability, proper fitment, and consistent performance under all driving conditions.
Fitment
Fits:
- BMW M340i (2019–2024)
- BMW M440i (2021–2024)
Important Notes
- Designed for M340i and M440i models only
- Valves integrate with factory exhaust valve control systems
- Professional installation recommended
- Please include your VIN in the order notes so we can confirm fitment and supply the correct product
- If installation is selected, this order will be shipped to our Burbank installation location for scheduled service
Shipping
- Estimated delivery: 2–4 weeks (production 1.5 weeks, shipping 1 week)
- Tracking provided once shipped
Warranty
- 36-month warranty covering manufacturer defects only
- Covers defects in materials or workmanship under normal use
Exclusions
- Does not cover improper installation
- Does not cover misuse, abuse, or neglect
- Does not cover normal wear and tear
- Does not cover damage caused by failing or reused components such as gaskets, clamps, or related hardware
Installation by BimmerTechsLA
- If installed by BimmerTechsLA, labor is covered under warranty for 36 months
- Labor coverage applies only to issues directly caused by a defect in the product
- Labor warranty does not cover issues caused by unrelated parts, pre-existing conditions, or customer-requested reuse of worn components
Installation & Delivery
- Installation available at BimmerTechsLA (Burbank, CA) upon request
- If installation is selected or a free-shipping/install code is used, your order will be shipped directly to our installation location
- By selecting installation or using the install code, you agree to have your product delivered to BimmerTechsLA for scheduled installation
- Orders without installation selected will be shipped to the customer’s provided address