Active Autowerke BMW B58 Catted Downpipe for F22 F30 F32 G20 - Fits M140i, M240i, 340i, M340i, 440i, M440i
Unlock performance and sound with the Active Autowerke BMW B58 catted downpipe. This high flow stainless steel downpipe is the go-to BMW B58 downpipe upgrade for drivers of the M140i, M240i, 340i, M340i, 440i and M440i who want faster turbo spool, reduced back-pressure, more power potential and a deeper exhaust note. Featuring a GESi G-Sport Ultra High Output catalytic converter, it is engineered for maximum flow while remaining fully OBD2 compliant. If you are searching for a BMW 340i downpipe, BMW M340i downpipe, BMW 440i downpipe, BMW M240i downpipe or BMW M140i downpipe, this Active Autowerke B58 catted downpipe delivers outstanding quality, fitment and results.
We have installed and used this downpipe on customer cars and feedback has been excellent. Faster response, improved drivability and a noticeable uplift in performance with no check engine light. If you want one of the best BMW B58 catted downpipes on the market, look no further.
Why choose the Active Autowerke B58 catted downpipe
- Designed for BMW B58 single-turbo engines to reduce back-pressure and speed up turbo spool
- 4.5 inch 304 stainless steel primary section tapering to 3.5 inch, then to 80 mm to match OEM exhaust
- Never drops below factory 80 mm diameter to maintain flow and power potential
- Precision cast stainless V-band for an exact, leak-free fit
- TIG welded 304 stainless construction for strength and longevity
- Stainless steel flex joint for durability and reduced stress
High flow GESi catalytic converter - no CEL
- GESi G-Sport Ultra High Output catalytic converter - fully OBD2 compliant
- EPA certified in 49 states and engineered to minimise emissions
- Helps eliminate check engine lights - this 4.5 inch high flow GESi cat variant will not produce a CEL
- Rated for 500 to 850 hp applications with exceptional flow capacity
- Withstands up to 1500°F and reaches operating efficiency in around 9 seconds
- 304 stainless substrate furnace braised to the mantle for durability
Main benefits you will feel
- Quicker turbo spool and improved throttle response
- Lower exhaust back-pressure for more efficient power delivery
- Deep, refined exhaust tone without excessive drone
- Bolt-on fitment - no cutting or welding required
- Ideal for forced induction applications and tuned B58 cars
Fitment - BMW B58 models
- BMW 1 Series F20 F21 LCI M140i and M140i xDrive (2015+)
- BMW 2 Series F22 F23 LCI M240i and M240i xDrive (2015+)
- BMW 3 Series F30 F31 LCI 340i and 340i xDrive (2014+)
- BMW 3 Series G20 G21 M340i and M340i xDrive (2019+)
- BMW 4 Series F32 F33 F36 LCI 440i and 440i xDrive (2015+)
- BMW 4 Series G22 G23 M440i and M440i xDrive (2020+)
Note: Not compatible with OPF, GPF or PPF equipped models.
Technical highlights
- 4.5 inch primary pipe for maximum flow and power potential
- 80 mm outlet to perfectly mate with the OEM exhaust system
- Ultra high flow 300 CPSI catalyst
- Made in Miami, Florida
Emissions and compliance
- GESi UHO catalytic converter is OBD2 compliant and EPA certified for 1996 and newer vehicles except in California
- These catalytic converters are not legal for use on vehicles registered in the state of California
Installation and fitting
This downpipe is a direct bolt-on replacement for the factory BMW B58 downpipe. For professional fitting, contact Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com.
Part number
11-062
Warranty
Covered by a 5 year or 50,000 mile warranty on the catalytic converter.
SEO-friendly search terms
BMW B58 downpipe, BMW B58 catted downpipe, Active Autowerke downpipe, GESi catted downpipe, BMW 340i downpipe, BMW M340i downpipe, BMW 440i downpipe, BMW M440i downpipe, BMW M240i downpipe, BMW M140i downpipe, F22 downpipe, F30 downpipe, F32 downpipe, G20 downpipe, high flow catalytic converter, 4.5 inch stainless downpipe, B58 performance exhaust upgrade, BMW downpipe UK, B58 turbo downpipe.