NOT LEGAL FOR SALE OR USE IN CALIFORNIA. This part has not been exempted by the California Air Resources Board and has no CARB Executive Order. It may not be sold for, installed on, or used on any vehicle registered or operated in California. We do not ship it to California addresses or offer it for local pickup.
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.
OVERVIEW VIDEO
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
