B58 BMW M340i/M440i/M240i (G20/G22/G42) Downpipe GEN2

Key Features:

• Optimized internal design to reduce backpressure and improve exhaust flow
• Built to support increased power and faster turbo spool on tuned/stock vehicles
• Direct bolt-on replacement for the factory downpipe using OEM mounting points
• Compatible with factory and most aftermarket exhaust systems (where applicable)
• Constructed from high-grade, TIG-welded 304 stainless steel for strength and corrosion resistance
• CNC-machined flanges / cast inlets for precise, leak-free fitment
• Engineered for clean, hassle-free installation no cutting or welding required

Product Overview

The AZ Motorsport downpipe is built for enthusiasts who want real gains from their B58-powered G20 M340i, G22 M440i and G42 M240i (2019+) without compromising fitment or reliability. By replacing the restrictive factory downpipe with a free-flowing 304 stainless design, it reduces backpressure, improves exhaust flow and turbo response, and unlocks power when paired with proper tuning.

Clean welds, precise fitment, and proven performance are why BMW owners choose AZ Motorsport – your go-to brand for performance exhaust and downpipes.

Important Notice:
OFF-ROAD / RACE USE ONLY
This product is designed exclusively for closed-course competition and off-road racing vehicles. It is not legal for use on public roads or on vehicles required to comply with emissions regulations in Canada or the United States. Installing this product on any pollution-controlled, registered, or street-driven vehicle may violate federal, state/provincial, and local laws.

By purchasing this product, you acknowledge and agree that:
This product does not meet applicable emissions standards and is not C.A.R.B. compliant.
AZ Motorsport makes no representations or warranties that this product is legal for any use other than closed-course competition.
You are solely responsible for understanding and complying with all laws and regulations that may apply to the purchase, installation, and use of this product.