BMW B58 4 Inch Decat Downpipe – Catless Stainless Steel Performance Upgrade by Nforcd
Unlock the full potential of your BMW B58 engine with this 4 inch decat downpipe. A catless downpipe dramatically improves exhaust gas flow, reduces back pressure and helps the turbo spool faster, giving you sharper throttle response, stronger mid-range pull and a more aggressive exhaust note. Ideal for enthusiasts chasing real performance gains from their BMW M140, M240, 340 and 440 with the B58 engine.
Built from high quality stainless steel, this B58 downpipe is a proven upgrade for anyone wanting a serious exhaust and turbo efficiency improvement over the restrictive factory catted downpipe. It is a popular choice for Stage 2 tuning setups and those looking for a catless, freer-flowing system on track-focused cars.
Key Features
- 4 inch B58 decat downpipe for maximum flow and reduced back pressure
- Catless design to improve turbo spool and overall performance
- High quality stainless steel construction
- Enhanced exhaust sound and turbo presence
- Ideal foundation for tuning, including Stage 2 style setups
- Designed for BMW B58 engine vehicles
Why Choose This BMW B58 Decat Downpipe
If you are searching for a BMW B58 downpipe, B58 decat, 4 inch B58 downpipe, catless downpipe for M140, M240, 340 or 440, or a stainless steel performance downpipe upgrade for your B58, this is the go-to choice. We have used this part on our own builds and customer cars, and feedback has been consistently excellent for fitment, quality and performance feel.
Fitment
For BMW models with the B58 engine, including:
- BMW M140
- BMW M240
- BMW 340
- BMW 440
Fitting Service
Professional fitting available at Nforcd in Warwickshire. Request a quote: Sales@nforcd.com
Important Information
This is a decat downpipe. For off-road and track use only. Not road legal where emissions regulations apply.
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