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Masata BMW B58 CATLESS DOWNPIPE (M140I, M240I, 340I, 440I & 550I)

Masata BMW B58 CATLESS DOWNPIPE (M140I, M240I, 340I, 440I & 550I)

Masata Lifetime Warranty

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Regular price £369.99 GBP
Regular price Sale price £369.99 GBP
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Masata B58 Downpipe for BMW M140i, M240i, 340i, 440i & 550i, constructed with 304 Staineless Steel including Flange, for optimum flow with proven performance. The smooth bends decreases turbulence and increase flow at the same time. Gains from 25-30bhp can be realised combined with a stage 2 remap such as the BM3 B58 Stage 2 OTS Map.

With the unique Masata flex section design similar to the flex section found on the OEM downpipe, extreme heat produced by the turbo causing expansion which cracks the downpipe is no longer an issue. The flex section also reduces stress of the turbo flange for a long lasting performance and eliminates unnecessary movements.

This beautiful handcrafted Masata downpipe utilises spot welding and crisscross welding technique at turbo flange for additional strength. Mechanical welding arm is also used to provide a smooth and perfect finish, it is compatible with OEM exhaust system or an aftermarket exhaust system that fits OEM downpipe.


  • Hand Crafted with TIG welded
  • Gains from 25-30hp with tune
  • 304 Grade Stainless Steel
  • Compatible with OEM Exhaust System
  • CNC SS304 Stainless Steel Construction with Flange
  • Smooth radius bends to decrease turbulence and increase flow
  • Masata Lifetime Warranty


  • BMW B58 F20 F21 BMW M140i xDrive (2016+)
  • BMW B58 F22 M240i & M240i xDrive(2016+)
  • BMW B58 F30/F31 340i & 340i xDrive(2016+)
  • BMW B58 F32/F33/F36 440i & 440i xDrive(2016+)
  • BMW B58 G30 540i & 540i xDrive(2016+)
  • BMW B58 G11/G12 740i & 740i xDrive (2016+)

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