Williams Performance Ltd

Williams Performance 4.5" B58 Downpipe BMW M140i M240i 340i 440i

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  • Regular price £249.99
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This is our own catless downpipe for the B58 engine.

4.5" Decat downpipe will improve turbo spool by massively reducing any turbo back pressure when compared to a catted downpipe.

Made from stainless steel and comes heat wrapped using Lava Wrap by Heatshield Products.

Also included is a Genuine BMW turbo-downpipe gasket.

Fitting of this item is also available at our workshop in Northumberland, North East England.



B58 engine






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