MBRP S45033CF 3" ARMOR Pro Axle-Back Exhaust – Active Profile | 2021–2026 BMW M3 & M4

The MBRP S45033CF ARMOR Pro Axle-Back Exhaust is designed to enhance the sound, style, and performance of the 2021–2026 BMW M3 and M4 (G80/G82). Featuring premium T304 stainless steel construction and quad rear exit carbon fiber tips, this system delivers an aggressive exhaust tone while retaining refined drivability through MBRP’s Active Profile tuning.

Engineered for enthusiasts seeking a bold, race-inspired appearance and improved exhaust flow, this axle-back system is a direct bolt-on upgrade backed by MBRP’s lifetime warranty.

Key Features & Benefits

• Active Profile exhaust for aggressive sound when valves are open

• Premium ARMOR Pro T304 stainless steel construction

• 3-inch mandrel-bent tubing for optimal exhaust flow

• Quad rear exit design for an aggressive rear appearance

• Carbon fiber, dual-wall angle-cut exhaust tips

• Direct bolt-on installation using factory mounting points

• Designed and engineered by MBRP

• Backed by a lifetime warranty

Technical Specs / Material Information

• Brand: MBRP

• Part Number: S45033CF

• Exhaust Type: Axle-Back

• Tubing Diameter: 3-Inch

• Series: ARMOR Pro

• Material: T304 Stainless Steel

• Finish: Polished Stainless

• Sound Profile: Active Profile

• Fuel Type: Diesel

• Exit Style: Quad Rear Exit

• Tip Style:

  • Dual Wall

  • Angle Cut

  • 5-Inch Outlet

  • Carbon Fiber Outer Wall

  • Mirror-Polished T304 Stainless Inner Sleeve

Installation Information

• Installation Type: Bolt-On

• Estimated Install Time: 1–2 Hours

• Professional Installation: Recommended

• Hardware Included: Yes

Special Notes

• Fits G80 M3 and G82 M4 models only

• Designed for 3.0L engines only

• Intended for vehicles equipped with factory active exhaust systems

Fitment