Milltek 80mm Axle-Back Exhaust - BMW G90 M5 - Burnt/Blue Titanium Tips - SSXBM1413

The Milltek 80mm Axle-Back Exhaust System is a direct bolt-on replacement for the rear section of your BMW G90/G99 M5 (NAS/ROW spec), requiring cutting of the OE system. Engineered to deliver enhanced exhaust flow, improved sound character, and refined aesthetics without full system replacement.

Constructed from premium T304L stainless steel with hand-finished burnt/blue titanium tips, this system features mandrel-bent 3.15" and 80mm pipe diameters optimized for M5 performance characteristics. The design maintains OEM+ fitment and compatibility with factory hangers while providing a sportier, more pronounced tone at full throttle.

Specifications

• Pipe Diameter: 3.15" and 80mm (mandrel-bent)
• Material: T304L stainless steel
• Tip Finish: Burnt/Blue Titanium
• Fitment: BMW M5 G90/G99 (NAS/ROW spec)
• Installation: OE system cutting required; uses factory mounting points

Each system is dyno-tested and finished to exacting standards.

Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.

Specifications

• Pipe diameter: 80mm (3.15")
• Fitting time: 4 to 5 hours, including removing the factory system

Fitment

• BMW > 5 Series > M5 4.4l Twin Turbo Hybrid G90 & G99 (NAS/ROW Spec Vehicles) > 2025 and Later

• Free US shipping on orders over $250.
• Free pickup at our Dallas shop, usually ready within 24 hours.
• Unused parts can be returned within 30 days. Tunes, opened electronics, merch and installed parts are final sale.
• Want it installed? Book the install at thegbmotors.com.

Full details are on our shipping and returns page.