Gumotorsport Catless Downpipe for BMW B58 M240i/340i/440i/540i/740i & xDrive 2016+ 4.5inch
Part #: GMS-B58-CL-001
Gumotorsport presents the catless B58 Downpipe for 2016 + M240i , 340i 440i 540i 740i & xDrive variants.
Highlights:
- 304 grade stainless steel
- CNC flanges
- Catless design , High Flow Downpipe
- 4.5" high flow design ( Hand welded )
Back pressure is significantly reduced by eliminating the restrictive catalytic converter in the factory downpipe
- Fits RHD and LHD models with no modification necessary.
- Fits the stock catback as well as all aftermarket catbacks.
- Gains from 20-30hp with tune.
2016+ F32/F33/F36 BMW 440i & 440i xDrive
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Customer Reviews
Slightlg disappointed it does not come with gaskets and that they dont even sell the gaskets. Concerned that the OE mounting bracket on the top is not there. I would feel alot more comfortable installing if it had the small bracket with locating bolts to take up and stregthen the exhaust weight and connection. The guy texted me to let me know vsrf was backordered for 2 months and convinced me to buy this one not knowing there was no bracket. Well i guess we will see what happens.
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