VRSF 4.5″ Catless Downpipe For B58 FXX series
  • VRSF 4.5″ Catless Downpipe For B58 FXX series
  • VRSF 4.5″ Catless Downpipe For B58 FXX series

VRSF 4.5″ Catless Downpipe For B58 FXX series


Catless downpipe for the B58 on FXX series cars. Gains instant power with this bolt-on


The VRSF 4.5″ downpipe upgrade is THE best bang for the buck mod available for your B58 equipped model FXX series BMW. By eliminating the restrictive catalytic converter in the factory downpipe, back pressure is significantly reduced which results in faster spool, an increase in power & a more aggressive exhaust note. The downpipes also features a unique CFD optimized cast merge collector which offers the smoothest turbo to mid pipe transition available.

Our downpipe features a full 4.5″ stainless steel design as well as a CNC 304 grade stainless steel flange that offers a smooth transition from the turbo to the mid pipes. All VRSF downpipes are hand crafted from SS304 grade stainless steel and include a lifetime warranty as well as our “No Hassle” satisfaction guarantee (includes fitment).

VRSF 4.5″ F20/F30/F31/F32/F33/F34/F36 B58 Stainless Steel Downpipe

  • Made from hand crafted, tig welded 4.5″ 304 grade stainless steel.
  • Smooth radius bends to decrease turbulence and increase flow.
  • Fits the stock catback as well as all aftermarket catbacks.
  • Gains from 25-30hp with tune.
  • VRSF Lifetime Warranty for race versions
This item fits the following BMWs:
2016+ F22/F23 BMW M240i & M240i xDrive
2016+ F30/F31 BMW 340i & 340i xDrive
2016+ F32/F33/F36 BMW 440i & 440i xDrive


Data sheet

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