Gen 3 B58 Downpipe - RVNG 6” (G20, G22, m340i)

The RVNG 6" Gen 3 B58 Catless Downpipe is the largest on the market, built specifically for the latest B58TU2 engine. Crafted from premium TIG-welded SS304 stainless and engineered for maximum flow, this 6" pipe outflows every other downpipe out there — for improved turbo response, reduced back-pressure, and the raw, aggressive sound your B58 was meant to make.

Key features

• 6" diameter for unmatched exhaust flow
• Built for Gen 3 B58TU2 engines
• Full TIG-welded stainless steel construction
• CNC-machined flanges for OEM-like fitment
• 100% catless for maximum performance and sound
• Designed, tested, and proven in-house by RVNG RaceWorks

Fitment

All Gen 3 B58TU2 BMWs — G20 / G22 M340i, M440i, and M240i. A tune is required to avoid a CEL, but not required to run safely.

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.