MBRP Armor Pro S45033CF 3-Inch Axle-Back Exhaust for 2021-2023 BMW M3 and M4

THE ONLY EXHAUST YOU"LL EVER NEED - MBRP Armor Pro Series exhaust systems are backed by a Lifetime Warranty and crafted out of T304 Stainless Steel - the most durable material grade that money can buy. The T304 Stainless Steel tubing is easy to clean and maintain. It’s the obvious choice for you if you operate your vehicle in extreme conditions. All of the tubing is mandrel bent for maximum exhaust flow. Mandrel bending ensures no rippling in the bends. The end result is that it gives you more fresh air inside your engine’s cylinders, allowing it to produce more power and improve vehicle performance and longevity. MBRP, Stand out from the crowd with a performance exhaust system that sounds great. Armor Pro Axle Back Exhaust System; 3in.;Incl. Under-Axle Pipe Assembly/Tail Pipe Assembly/Hardware/4.5in OD Carbon Fiber Tips; Quad Rear Exit; T304 Stainless Steel; 4.5in. Outside Diameter Tips Included. Active Exhaust.

• Durable T304 Stainless Steel Construction. Bolt-On Installation. Retains Factory Active sound. Up to 4 Percent Flow Increase. Carbon Fiber Tips Included.
• Durable T304 Stainless Steel Construction
• Up To 4 Percent Flow Increase
• Retains Factory Active Sound
• Bolt-On Installation

Upgrade your 2021-2023 BMW M3 or M4 with the MBRP Armor Pro Series S45033CF axle-back exhaust system. Designed with durable T304 stainless steel tubing, this performance exhaust delivers improved flow, a refined appearance, and reliable service in demanding driving conditions. The system features a quad rear exit and 4.5-inch outside-diameter carbon fiber tips for a distinctive, performance-oriented finish.

Mandrel-bent tubing helps maintain consistent internal diameter through each bend, supporting efficient exhaust flow and helping the system achieve up to a 4 percent flow increase. The bolt-on design is engineered for a straightforward installation while retaining the factory active exhaust sound. The included under-axle pipe assembly, tail pipe assembly, mounting hardware, and carbon fiber tips provide the components needed for a complete axle-back installation. MBRP backs the Armor Pro Series with a limited lifetime warranty.

Key Product Specifications & Technical Data

• Brand: MBRP
• Part Number: S45033CF
• Product Type: Axle-back exhaust system
• Material: T304 stainless steel
• Pipe Diameter: 3 inches
• Exit Configuration: Quad rear exit
• Tip Style: 4.5-inch outside-diameter carbon fiber tips
• Installation: Bolt-on design with included hardware

What's Included

• Under-axle pipe assembly
• Tail pipe assembly
• Carbon fiber exhaust tips
• Installation hardware

Fitment: Fits 2021-2023 BMW M3 and BMW M4 models. This system retains the factory active exhaust functionality and is intended for compatible vehicle configurations. Verify vehicle application before ordering. This product is not CARB-approved and may not be legal for use on pollution-controlled vehicles in all jurisdictions.

Features:

• Durable T304 stainless steel construction supports long-term corrosion resistance and reliable use in extreme conditions.
• Mandrel-bent 3-inch tubing maintains smooth internal airflow and supports up to a 4 percent flow increase.
• Quad rear-exit configuration with 4.5-inch carbon fiber tips delivers a distinctive performance appearance.
• Bolt-on installation retains factory active exhaust sound and includes the necessary pipe assemblies and hardware.

Fitments:
2021 BMW M3 Base
2021 BMW M3 Competition
2021 BMW M4 Base
2021 BMW M4 Competition
2022 BMW M3 Base
2022 BMW M3 Competition
2022 BMW M3 Competition xDrive
2022 BMW M4 Base
2022 BMW M4 Competition
2022 BMW M4 Competition xDrive
2023 BMW M3 Base
2023 BMW M3 Competition
2023 BMW M3 Competition xDrive
2023 BMW M4 Base
2023 BMW M4 Competition
2023 BMW M4 Competition xDrive
2024 BMW M3 Base
2024 BMW M3 Competition
2024 BMW M3 Competition xDrive
2024 BMW M3 CS
2024 BMW M4 Base
2024 BMW M4 Competition
2024 BMW M4 Competition xDrive
2025 BMW M3 Base
2025 BMW M3 Competition
2025 BMW M3 Competition xDrive
2025 BMW M4 Base
2025 BMW M4 Competition
2025 BMW M4 Competition xDrive
2025 BMW M4 CS
2026 BMW M3 Base
2026 BMW M3 Competition
2026 BMW M3 Competition xDrive
2026 BMW M4 Base
2026 BMW M4 Competition
2026 BMW M4 Competition xDrive

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1