MAD BMW 2021+ S58 G80 G82 G83 G87 M3 M4 M2 3.5" Downpipes Catless Hydroformed

MAD BMW 2021+ S58 G80 G82 G83 G87 M3 M4 M2 3.5" Downpipes Catless Hydroformed

$299.00
SKU:
MAD-163

Expected release date is Jan 4th 2027

MAD BMW G8X S58 3.5" Catless Hydroformed Downpipes

The MAD 3.5" Catless Hydroformed Downpipes are designed for BMW G8X models powered by the S58 twin-turbocharged inline-six engine. Featuring an enlarged 3.5-inch design and a catless configuration, these downpipes provide a less restrictive exhaust path for enthusiasts looking to maximize exhaust flow, enhance turbo sound, and bring out more of the S58's aggressive character.

Advanced Hydroformed Technology

The defining feature of these downpipes is their hydroformed construction. This advanced manufacturing process uses high-pressure fluid to shape metal into precise, complex forms, allowing for smooth transitions through the tubing and carefully optimized geometry.

Hydroforming helps create a clean, uniform design that accommodates the tight packaging of the G8X engine bay while maintaining structural integrity. The result is a precisely formed downpipe designed around the S58 platform, combining a large-diameter exhaust path with smooth contours through the bends.

Reduced Restriction, More S58 Character

The 3.5-inch diameter and catless configuration are designed to reduce exhaust restriction immediately after the turbochargers. The increased flow capacity makes these downpipes a performance-oriented upgrade for modified S58 applications.

With the factory catalytic elements removed, exhaust sound becomes louder and more aggressive, with enhanced turbo character under acceleration. These downpipes are ideal for enthusiasts looking for a more direct exhaust note and a freer-flowing foundation for their setup.

Features

  • 3.5-inch diameter for increased exhaust flow capacity

  • Hydroformed tubing for precise shaping and smooth transitions

  • Catless design to reduce exhaust restriction

  • Designed specifically for the BMW S58 engine platform

  • Made from 304 stainless steel

  • Compatible with right-hand drive and left-hand drive vehicles

  • Integrated flex sections

NOTE: Downpipe gasket is not included. Part # 18308053348 qty 2 is required for installation.

Fitment

  • BMW G80 M3 2021+

  • BMW G82 M4 Coupe 2021+

  • BMW G83 M4 Convertible 2021+

  • BMW G87 M2 2023+

Emissions Disclaimer:
This product is not legal for sale or use on pollution-controlled vehicles operated on public roads, highways, or streets. It is intended for off-road, race, or closed-course competition use only, where such modifications are permitted.

By purchasing this product, you acknowledge and agree that:

  • You are responsible for compliance with all applicable emissions laws and regulations.

  • MAD and its affiliates disclaim any liability for improper or unlawful use of this product.

  • Use of this part 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.

 

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