4.5" Downpipe Exhaust for 2016+ BMW B58 F/G Series 3.0L F30 F34 M140i M240i 340i 440i 540i 740i
- 3 items → Extra 5% off
- 5 items → Extra 7% off
- 7 items → Extra 9% off
Guaranteed Safe Checkout
Attention
Products on this site are for off-road/racing use only and are not legal for public roads where emissions laws apply.
Professional installation recommended. Removing emissions equipment (CAT, SCR, DOC) requires deleting related sensors and a compatible tuner to avoid engine codes.
Performance gains may vary—no guarantees.
Unlock the full potential of your BMW B58 engine with the SAMexhaust Downpipe. Designed for the F2X M140i, M240i, and F3X M340i, M440i Series, this high-performance downpipe overcomes the restrictive factory design to significantly improve exhaust flow and turbo efficiency. Experience quicker turbo spool-up, increased horsepower, and sharper throttle response. By optimizing exhaust gas evacuation, it delivers faster acceleration, enhanced turbo responsiveness, and a more engaging drive—transforming your B58 into an even more thrilling powerhouse.
Features
- Made from hand crafted, tig welded 4.5″ 304 grade stainless steel
- Fits RHD and LHD models with no modifications necessary
- Smooth radius bends to decrease turbulence and increase flow
- Gains from 25-30hp with tune
- Improves Engine Output and Efficiency, Gives you extra HPs, and increases torque
- Large diameter and free flow tubing for unrestricted flow, Making the exhaust air flow smooth, Designed for high-performance racing
- All joints are TIG welded to prevent cracking and wear
- CNC Machine Flange for MAX Strength and Durability
- Flanges chrome plated for corrosion resistance
Fitment
- 2016+ BMW M140i F20
- 2016+ BMW M240i/M240i xDrive F22
- 2016+ BMW 340i/340i xDrive F30/F31/G20
- 2016+ BMW 440i/440i xDrive F32/F33/F36/G22/G23/G26
- 2016+ BMW 540i/540i xDrive G30/G31
- 2016+ BMW 740i/740i xDrive G11/G12
- 2018+ BMW X3M40i (18-21)/X4 M40i(19-21) G01/G02
| VEHICLE NAME | YEAR | ENGINE |
|---|---|---|
| BMW 340i | 2017~2018 | 3.0L |
| BMW 340i xDrive | 2017~2018 | 3.0L |
| BMW 440i | 2017~2020 | 3.0L |
| BMW 440i xDrive | 2017~2020 | 3.0L |
| BMW 540i | 2017~2023 | 3.0L |
| BMW 540i xDrive | 2017~2024 | 3.0L |
| BMW 740i | 2017~2024 | 2.0L|3.0L |
| BMW 740i xDrive | 2017~2022 | 3.0L |
| BMW M140i | 2017~2019 | 3.0L |
| BMW M240i | 2017~2021|2023~2024 | 3.0L |
| BMW M240i xDrive | 2017~2024 | 3.0L |
| BMW X3 | 2018~2021 | 3.0L |
| BMW X4 | 2019~2021 | 3.0L |
