Stone Exhaust BMW MINI B48 B48E Catless Downpipe - F39 F40 F44 F46 - M135i xDrive, M235i xDrive, 220i, X2 20i 28i, MINI Cooper S F55 F56, MINI F60 Countryman
Unlock serious flow and fast turbo response with the Stone Exhaust catless downpipe for BMW and MINI B48 and B48E engines. This high quality downpipe is a direct upgrade for F40 M135i xDrive, F44 M235i xDrive, F45 F46 220i, F39 X2 20i 28i, plus MINI F55 F56 Cooper S and MINI F60 Countryman Cooper S. If you are searching for BMW B48 downpipe, B48E downpipe, M135i downpipe, M235i downpipe, 220i downpipe, X2 20i downpipe, Mini Cooper S downpipe, or B48 decat downpipe in the UK, this is the proven choice.
Developed using 3D scanning, reverse engineering and precision robotic welding, the Stone Exhaust catless downpipe delivers exceptional exhaust gas velocity and durability. One piece mandrel bent tubing, a reinforced turbo flange with crisscross and overlapping welds, and a unique flex section all combine to maximise performance and reliability. It is designed for perfect OEM fitment for B48 and B48E applications including OPF and non OPF variants.
We have fitted and run this downpipe on customer B48 and B48E cars and the feedback has been consistently positive. Sharper throttle response, quicker spool and a more purposeful tone when paired with the matching Stone cat back are what owners love. If you want the best B48 catless downpipe for M135i xDrive, M235i xDrive or Mini Cooper S, this is it.
Why choose the Stone Exhaust B48 B48E catless downpipe
- Catless downpipe for BMW B48 and B48E engines - the go to B48 decat downpipe upgrade
- 100 percent OEM fitment for F39, F40, F44, F45, F46, F55, F56, F60 platforms
- Unique flex section helps prevent fatigue from extreme heat cycles
- Reinforced turbo flange with crisscross and overlapping welding for strength
- One piece mandrel bent design for smooth, high velocity exhaust flow
- Precision mechanical welding using robotic arms for consistent penetration
- 3D scanning and reverse engineering of OEM parts to optimise route, diameter and bend angles
- 7 axis CNC bending achieves up to 98 percent roundness and exceptional accuracy
Engineering that makes a difference
Stone Exhaust uses advanced 3D flow simulation to analyse gas speed, heat and pressure zones, then iterates until the optimum B48 and B48E downpipe geometry is achieved. The result is a catless downpipe that reduces restriction, promotes faster turbo spool and withstands the thermal stress found at the turbo to downpipe interface. Mechanical arms carry out direct spot welding for accuracy that manual processes cannot match.
Perfect pairing
Often purchased with the Stone Exhaust BMW B48E F40 M135i xDrive Cat Back Valvetronic Exhaust System for a complete performance exhaust upgrade. Combine the catless downpipe with the cat back for maximum flow and an enhanced sound profile.
Compatibility - BMW and MINI B48 B48E
B48 Engine - A228P
- BMW 2 Series F45 F46 220i 2014+
- MINI F55 F56 Cooper S 2015+
- MINI F60 Countryman Cooper S 2017+
B48E Engine - A228PG
- BMW 1 Series F40 M135i xDrive 2018+
- BMW 2 Series F44 M235i xDrive 2018+
- BMW 2 Series F45 F46 220i 2014+
- BMW X2 F39 20i 28i 2016+
- MINI F55 F56 Cooper S 2015+
- MINI F60 Countryman Cooper S 2017+
Part numbers
- A228P Non OPF
- A228PG OPF
Installation and fitting
Direct bolt on with OEM style fitment points. For professional installation and coding advice, we recommend booking with Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com.
Manufactured by
Stone Exhaust
Warranty
Stone Exhaust 2 year warranty
Important information
This is a catless downpipe. For motorsport and off road use only where local laws permit. Check local regulations before purchase and installation.
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