MagnaFlow mag19828 BMW SPEQ Series Black Chrome Cat-Back Exhaust System

The MagnaFlow SPEQ Series #19828 cat-back exhaust is engineered for BMW G20, G22, and G23 M340i/M440i and xDrive models equipped with the 3.0L B58 inline-6. Designed to improve exhaust flow, amplify performance sound, and enhance visual appeal, it aggressively elevates the character of modern BMW performance. Constructed from mandrel bent 3” 304 stainless steel tubing with a 3.5” front pipe, it offers excellent durability and corrosion resistance. A stamped Y-pipe smoothly merges exhaust pulses for improved efficiency, while the straight-through design is dyno proven to support power gains for both stock and high output applications. Sound is managed through dual 5x8” straight-through mufflers and an NDT resonator, producing a deep, aggressive performance tone under acceleration while eliminating drone at cruising speeds. The result is a strong, assertive exhaust note that stays controlled in daily driving and opens up with pops and cracks when you get on or off the throttle. The system features interchangeable tip options secured with racing bred V-band clamps for a leak free, heat stable connection. Choose quad 3.5” black chrome tips with laser etched MagnaFlow “MF” logos or reuse factory tips. OEM valve functionality is retained by MagnaFlow’s cast stainless valves, allowing full integration with all driving modes. Designed as a direct replacement for factory components behind the catalytic converters, the system includes band clamps, laser cut logo brackets, and all necessary installation hardware for a secure, precise fit, achieved through 3D scanning and CNC robotic manufacturing ensuring a true direct-fit installation. Backed by MagnaFlow’s limited lifetime construction warranty, this cat-back delivers a measurable upgrade in sound quality, flow efficiency, and overall power. Designed with a focus on real world performance, it enhances the B58 with a power focused exhaust tone and the premium construction demanded by modern high output performance. MagnaFlow SPEQ Series Black Chrome Cat-Back System Need further assistance? Call 1-800-990-0905.

• No-Drone-Technology allows for a quiet cabin
• Increased Horsepower and Torque
• 100% Stainless Steel

The MagnaFlow SPEQ Series mag19828 black chrome cat-back exhaust system is designed for select BMW M340i and M440i models equipped with the 3.0L B58 inline-6 engine. Replacing the factory components behind the catalytic converters, this system is engineered to improve exhaust flow, enhance performance sound and add a more aggressive visual appearance.

Constructed from mandrel-bent 3-inch 304 stainless steel tubing with a 3.5-inch front pipe, the system combines durable materials with a straight-through design. Dual 5 x 8-inch straight-through mufflers and a No-Drone Technology resonator produce a deep, aggressive exhaust tone under acceleration while helping maintain a quieter cabin during cruising. MagnaFlow cast stainless valves retain OEM valve functionality for integration with available driving modes.

The system uses a stamped Y-pipe, interchangeable tip options and racing-bred V-band clamps for secure connections. Quad 3.5-inch black chrome tips feature laser-etched MagnaFlow MF logos, while the factory tips may be reused. Direct-fit manufacturing is supported by 3D scanning and CNC robotic production. The system includes installation hardware and is backed by MagnaFlow’s limited lifetime construction warranty.

What's Included: Cat-back exhaust components, band clamps, laser-cut logo brackets and installation hardware.

Fitment: 2020 BMW M340i; 2020 BMW M340i xDrive; 2021 BMW M340i; 2021 BMW M340i xDrive; 2021 BMW M440i; 2021 BMW M440i xDrive; 2022 BMW M340i; 2022 BMW M340i xDrive; 2022 BMW M440i; 2022 BMW M440i xDrive.

Features:

• No-Drone Technology: Helps maintain a quiet cabin during cruising.
• Performance Sound: Produces a deep, aggressive exhaust tone with pops and cracks during throttle transitions.
• Straight-Through Design: Dyno-proven design intended to support power gains for stock and high-output applications.
• 304 Stainless Steel Construction: Mandrel-bent stainless steel tubing provides durability and corrosion resistance.
• B58 Engine Application: Designed for select BMW M340i and M440i models with the 3.0L B58 inline-6.
• OEM Valve Functionality: MagnaFlow cast stainless valves retain factory valve operation through available driving modes.
• Interchangeable Tips: Includes quad 3.5-inch black chrome tips with laser-etched MagnaFlow MF logos and allows reuse of factory tips.
• Direct-Fit Installation: Manufactured using 3D scanning and CNC robotic production, with clamps, brackets and installation hardware included.

Fitments:
2020 BMW M340i Base
2020 BMW M340i xDrive Base
2021 BMW M340i Base
2021 BMW M340i xDrive Base
2021 BMW M440i Base
2021 BMW M440i xDrive Base
2022 BMW M340i Base
2022 BMW M340i xDrive Base
2022 BMW M440i Base
2022 BMW M440i xDrive Base
2023 BMW M340i Base
2023 BMW M340i xDrive Base
2023 BMW M440i Base
2023 BMW M440i xDrive Base
2024 BMW M340i Base
2024 BMW M340i xDrive Base
2024 BMW M440i Base
2024 BMW M440i xDrive Base

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