Rvng 4.5" Downpipe for BMW B58 Series

The RVNG 4.5" B58 Catless Downpipe significantly cuts back-pressure by removing the restrictive catalytic converter in the factory downpipe — the result is faster spool, more power, and a more aggressive exhaust note. It runs a full 4.5" stainless steel design with a CNC 304-grade stainless flange for a smooth transition from the turbo to the midpipes.

Key features

• Hand-crafted, TIG-welded SS304 stainless steel
• CNC tube-bent with smooth radius bends to cut turbulence and increase flow, with a guaranteed fit
• CNC SS304 stainless steel flanges
• Gains of 15-20whp without a tune, and up to 25-30whp with a tune
• Backed by the RVNG lifetime warranty

Fitment

Fits all Gen 1 and Gen 2 B58 BMWs (excluding the Toyota Supra) — 1, 2, 3, 4, 5 and 7 Series, RWD and xDrive, all generations.

Backed by the RVNG RaceWorks lifetime warranty against defects and fitment.

Emissions disclaimer: This product is not legal for sale or use on pollution-controlled vehicles operated on public roads and is intended for off-road, race, or closed-course competition use only. You are responsible for compliance with all applicable emissions laws; use on public roads may violate the Federal Clean Air Act (42 U.S.C. § 7522) and similar state laws. Please check your local laws before purchase and installation.

Ships from our Vancouver shop — KORE SPEED is proudly Canadian-owned, with no surprise cross-border duties for Canadian buyers. Questions on fitment? Email support@korespeed.com.