Masata BMW B58 Catless Downpipe For M140I, M240I, 340I, 440I & 550I

MasataSKU: MST0013

Sale price£399.99

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Masata B58 Downpipe for BMW M140i, M240i, 340i, 440i & 550i, constructed with 304 Stainless Steel including Flange, for optimum flow with proven performance. The smooth bends decrease turbulence and increase flow at the same time. Gains from 25-30bhp can be realized 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 of the downpipe is no longer an issue. The flex section also reduces the stress of the turbo flange for long-lasting performance. 
This beautiful handcrafted Masata downpipe utilizes TIG machinery weld for a smooth finish, it is compatible with the OEM exhaust system or an aftermarket exhaust system that fits the OEM downpipe. 

!! Please note this product is only for track use. !!



  • Designed specifically for the BMW M140I, M240I, 340I, 440I and 550I
  • 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


We offer worldwide shipping on all products.
If upon receiving your product you wish to return it, we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy"

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