Cobra BMW M140i Downpipe Upgrade — De-Cat and High Flow Sports Cat Performance Exhaust
Transform your BMW M140i with the Cobra performance downpipe. This turbo downpipe is engineered in 3.5 inch 88.9 mm pipework and runs from the turbo to the centre section to replace the restrictive factory catalyst. Expect faster turbo spool, reduced back pressure, stronger mid‑range pull and a noticeably sharper exhaust note. We have fitted these at Nforcd and customer feedback has been excellent for both the de-cat and the high flow sports cat options.
Searching for BMW M140i downpipe, BMW M140i de-cat, BMW M140i sports cat, F20 M140i downpipe, F21 M140i downpipe, Cobra M140i downpipe, M140i B58 downpipe, BMW 1 Series M140i performance exhaust or turbo downpipe for M140i? This is the proven upgrade enthusiasts choose.
Why choose the Cobra M140i downpipe
- 3.5 inch 88.9 mm performance pipework for optimal gas flow and turbo efficiency
- Direct fit from turbo to centre exhaust section
- Choice of high flow sports catalyst or de-cat to suit road or track
- Enhanced throttle response and a more engaging exhaust sound
- All relevant fittings and gaskets supplied for an easier install
- Backed by Cobra Lifetime Warranty non-transferable
Road legality and options
- Sports Cat BM85: High flow sports catalyst designed to pass a UK MOT emissions test and police roadside checks while unlocking performance and sound. Ideal for fast road and track day cars that need to remain emissions compliant.
- De-Cat BM76: For motorsport and off road use only. This option will not pass a UK MOT emissions test or police roadside checks but delivers maximum flow and response for track builds.
Fitment
BMW 1 Series
- F20 F21 LCI 2015–2019
- M140i
Part numbers
- BM85 Sports Catalyst
- BM76 De-Cat
Manufactured by
Cobra
Warranty
Cobra Lifetime Warranty non-transferable
Fitting and support
Professional installation is recommended. For expert fitting at Nforcd in Warwickshire or to request a quote, email Sales@nforcd.com. We have extensive hands-on experience with these BMW M140i downpipes and can advise on the best setup for your road or track goals.
What you get
- Cobra BMW M140i downpipe in 3.5 inch 88.9 mm configuration
- All relevant fittings and gaskets
Popular searches this product answers
BMW M140i downpipe, BMW M140i de-cat, BMW M140i sports cat, M140i F20 downpipe, M140i F21 downpipe, BMW 1 Series M140i performance exhaust, Cobra M140i exhaust, M140i turbo downpipe, high flow catted downpipe M140i, decat downpipe M140i, B58 M140i downpipe upgrade.