Masata BMW B58 Catless Downpipe for M140i, M240i, 340i, 440i, 540i and 740i
Upgrade your BMW B58 with the Masata catless downpipe and unlock serious performance. This B58 downpipe is engineered from 304 grade stainless steel with a CNC machined SS304 flange and smooth radius bends to reduce turbulence and maximise exhaust flow. Perfect for BMW M140i, M240i, 340i, 440i, 540i and 740i owners searching for a high flow B58 downpipe, decat downpipe, de cat downpipe or catless downpipe upgrade that delivers proven gains with a tune. Expect 25 to 30 bhp when paired with a suitable Stage 2 remap such as the BM3 B58 Stage 2 OTS Map.
The Masata flex section mirrors the OEM design to handle extreme turbo heat and expansion. This reduces stress at the turbo flange, helps prevent cracking and eliminates unnecessary movement for long term reliability. Each Masata B58 decat downpipe is handcrafted, TIG welded and finished using a mechanical welding arm with additional spot and crisscross welds at the turbo flange for extra strength. Direct fitment to the OEM exhaust system and any aftermarket exhaust designed to fit the OEM downpipe.
We run these on our own B58 cars at Nforcd and our customers consistently report excellent build quality, a noticeable improvement in flow and superb value from this Masata BMW B58 downpipe.
Key features and benefits
- BMW B58 catless downpipe for M140i, M240i, 340i, 440i, 540i and 740i
- High flow design with smooth radius bends to decrease turbulence and increase flow
- Handcrafted, TIG welded construction with additional spot and crisscross welds at turbo flange
- 304 grade stainless steel body and CNC SS304 flange for durability and strength
- Unique Masata flex section similar to OEM to handle heat expansion and reduce flange stress
- Compatible with OEM exhaust and aftermarket systems that fit the OEM downpipe
- Gains of 25 to 30 bhp when tuned with a Stage 2 map such as BM3 B58 Stage 2 OTS Map
- Masata Lifetime Warranty
Compatibility
2016+ F20 F21 BMW M140i and M140i xDrive
2016+ F22 BMW M240i and M240i xDrive
2016+ F30 F31 BMW 340i and 340i xDrive
2016+ F32 F33 F36 BMW 440i and 440i xDrive
2016+ G30 BMW 540i and 540i xDrive
2016+ G11 G12 BMW 740i and 740i xDrive
Why choose the Masata B58 downpipe
If you are searching for BMW B58 downpipe UK, M140i downpipe, M240i downpipe, 340i downpipe, 440i downpipe, 540i downpipe or 740i downpipe, this Masata catless decat downpipe gives you the high flow, stainless steel build quality and OEM style fitment enthusiasts want. It is a proven performance upgrade for anyone planning a Stage 2 tune on the B58 platform and looking to improve exhaust flow with a durable, TIG welded SS304 construction.
Installation and fitting
Professional installation is recommended. We suggest fitting at Nforcd in Warwickshire. Request a fitting quote via Sales@nforcd.com. We also recommend replacing the downpipe gasket when installing the Masata downpipe.
Compatibility check
For peace of mind, we run a compatibility check before dispatch. Provide your registration number for UK vehicles or the last 7 digits of your VIN at checkout and we will confirm fitment.
Part number
MST0013
Manufacturer and warranty
Manufactured by Masata
Backed by Masata Lifetime Warranty
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