The HM S68 Midpipe is precision engineered for the 2025+ BMW G90 M5, designed to enhance both sound and performance while maintaining OEM fitment and quality. Constructed from high-grade 304 stainless steel, this system replaces the restrictive factory midsection with a 76 mm (3.0 in) mandrel-bent design that improves exhaust flow, reduces backpressure, and delivers a deeper, sharper tone from the S68 hybrid twin-turbo V8.
A custom-formed heat shield is integrated around the front section where the midpipe connects to the downpipes. This helps protect nearby components and reduce tunnel temperatures, especially during high-performance driving or extended operation in warmer conditions.
Each HM S68 Midpipe is a direct bolt-on replacement using factory-style flanges and hangers, and it includes all necessary hardware for an easy, no-weld installation. All midpipes feature a limited lifetime warranty for the original buyer against manufacturing defects.
Key Features • 304 stainless steel construction for strength and corrosion resistance • 76 mm mandrel-bent piping for optimal flow and performance • Designed to enhance exhaust tone and reduce restriction • Integrated heat shield near downpipe junction for improved thermal control • Bolt-on installation with supplied hardware—no cutting or welding required • Compatible with OEM and most aftermarket rear sections• Engineered specifically for the G90 M5 S68 hybrid V8 platform
Performance and Benefits • Deeper, more refined exhaust tone with an aggressive character under load • Improved exhaust scavenging and reduced turbo backpressure • Lower tunnel temperatures for greater component protection
Not for sale or use on vehicles registered in the state of California.
