Stainless Steel Cat-Back
M340i / M440i
- Fits
- 2020–2026 M340i; 2021–2026 M440i
- Chassis
- G20 / G22 / G23 / G26
- Part No.
- CBB07-00-4268
A deeper, throatier sound when you get on it. Refined cruising when you don't. Built in 304 stainless steel for the drive ahead.
Stainless Steel Cat-Back
Stainless Steel Cat-Back
Stainless Steel Cat-Back
Titanium Cat-Back
Stainless Steel Cat-Back
Stainless Steel Cat-Back
Stainless Steel Cat-Back
Exhaust Accessory
Open your BMW’s factory exhaust valves with the push of a button, then return to the factory setting whenever you want. Choose the module that matches your car’s valve configuration.
Check vehicle fitment on the product page before ordering.
Upgrade your BMW with a CarBahn performance exhaust system engineered for a deeper, more aggressive exhaust note without sacrificing everyday drivability. Our lineup includes stainless steel and titanium cat-back exhaust systems for select BMW M and M Performance models.
CarBahn stainless steel exhaust systems feature durable 304 stainless steel construction, precision joggle-slot connections, and included stainless steel exhaust tips. They're engineered to deliver a throatier sound under acceleration while maintaining a refined cruising experience.
Whether you're upgrading a BMW M3, M4, M5, or an M Performance model, explore our selection of exhaust systems by vehicle to find the right combination of sound, construction, and fitment.
Stainless steel exhaust systems offer excellent durability, corrosion resistance, and a distinctive performance sound. Titanium exhaust systems are typically lighter than comparable stainless steel designs, making them attractive to drivers seeking weight savings alongside an upgraded exhaust note. Available materials vary by BMW model and exhaust configuration.
CarBahn exhaust systems are engineered to deliver a deeper, more aggressive exhaust note while maintaining comfortable everyday drivability. Our stainless steel cat-back systems are designed to minimize unwanted highway drone. Sound characteristics can vary depending on vehicle, engine, driving conditions, and exhaust configuration.
Start by identifying your BMW model, model year, and chassis generation. For example, the G80 BMW M3 and G82 BMW M4 have specific exhaust fitment requirements. Browse the CarBahn exhaust collection and review each product's vehicle compatibility information before purchasing.
A cat-back exhaust system replaces exhaust components downstream of the catalytic converters. Depending on the vehicle and system design, this can include intermediate piping, resonators, mufflers, and exhaust tips. Cat-back systems are a popular way to change exhaust sound without replacing the factory catalytic converters.
Not necessarily. An exhaust valve controller is an optional upgrade for compatible vehicles that allows additional control over factory or supported aftermarket exhaust valves. Compatibility and available functionality depend on your BMW model and exhaust configuration.