BMW M3 G80 G81 / M4 G82 G83 S58 3.0TT Stainless Steel 4 inch Fat Boy Single Midpipe

Product Overview

This single-pipe midpipe is designed for the G8x BMW M3 and M4 with the S58 3.0-litre twin-turbo inline-six. Described as a 4 inch fat boy design, it merges the centre exhaust flow into one large stainless steel pipe, replacing the factory centre section for owners pursuing a more aggressive exhaust setup.

Key Features and Benefits

• Single large-bore pipe, listed as 4 inch
• Stainless steel construction for strength and longevity
• Replaces the centre exhaust section
• Intended for street and performance exhaust upgrades
• Silver stainless finish

Vehicle Compatibility

The supplier lists fitment for BMW M3 and M4 models on the G80, G81, G82 and G83 chassis with the S58 3.0TT engine. This is supplier-stated fitment and has not been independently verified. Year ranges were not provided, so please confirm compatibility with your exact model, including xDrive variants, before ordering.

Product Specifications

• Product type: 4 inch fat boy single midpipe
• Material: stainless steel
• Thickness: standard (figure not specified)
• Engine: S58 3.0TT
• Chassis: G80, G81, G82, G83
• Exhaust section: centre section
• Colour: silver

Installation and Usage

Listed as a performance replacement installation, this midpipe should be fitted by an experienced exhaust specialist with access to a hoist. Ensure the exhaust is cold before removal, and support the rear section while the centre pipe is changed. Check clearances carefully, as a larger single pipe sits differently to the factory layout. Inspect for leaks and recheck clamps after the first drives.

Package Contents

The listing implies one single midpipe as pictured. The supplier has not confirmed whether clamps, gaskets or mounting hardware are supplied.

Important Fitment Notice

Please send us your VIN or chassis number before ordering so we can help confirm fitment. Midpipe changes can noticeably increase exhaust volume, and New Zealand vehicles must meet noise and WoF requirements. The owner is responsible for compliance. Images are for reference only, and weld appearance or finish may vary slightly between production batches.