🔥 MAD B58 200 Cell Catted Downpipe – Performance. Sound. Precision.

Unleash the true potential of your B58-powered BMW or Toyota Supra with the MAD B58 Catted Downpipe. Designed for enthusiasts who want more power, better throttle response, and an aggressive exhaust tone—without sacrificing emissions compliance—this is the ideal bolt-on performance upgrade.

💨 Built for Power, Tuned for Flow

Engineered with precision mandrel bends and a 200-cell high-flow catalytic converter, this downpipe dramatically improves exhaust flow over the restrictive factory unit. That means:

• Faster turbo spool

• Increased horsepower and torque

• Sharper throttle response

• A deeper, more defined exhaust note

Expect up to +30 HP gains on stock turbos—with even bigger numbers on upgraded setups.

🔧 Hassle-Free Install, OEM-Like Fit

Crafted from premium 304 stainless steel, the MAD B58 Catted Downpipe is made to withstand the heat and stress of high-performance driving. The bolt-on design requires no cutting or welding and integrates flawlessly with your OEM or aftermarket exhaust system.

Includes a flex section to absorb vibrations and ensure a long service life—no rattles, no drone, just clean performance.

✅ Key Features:

• 🔧 Direct bolt-on fit – no cutting or welding required

• 🌪️ 200-cell high-flow catalytic converter – Euro 5 compliant

• 🔊 Deep, aggressive tone without drone

• 🔥 Up to +30HP gains on stock turbos

• 🧰 Flex section for added durability

• 🛠️ Compatible with RHD & LHD models

• 🏁 Race use only – tuning recommended to avoid CEL

• 💯 Lifetime warranty on fitment & defects

• 🚚 Ships in 1–2 business days

• 🔁 90-day return policy

🚗 Fitment:

• 2015+ BMW M240i & xDrive

• 2016–2019 BMW 340i & xDrive

• 2020+ BMW M340i & xDrive

• 2016+ BMW 440i & xDrive

• 2016+ BMW 540i & xDrive

• 2016+ BMW 740i & xDrive

• 2017–2020 BMW X3 M40i

• 2017–2020 BMW X4 M40i

• 2019+ Toyota GR Supra 3.0L (A90/A91)

🏎️ Why Choose MAD?

MAD Performance is trusted by enthusiasts worldwide for delivering track-proven, street-reliable components that install cleanly and perform under pressure. Whether you're daily driving, drag racing, or carving canyon roads, this downpipe delivers the perfect balance of sound, power, and reliability.

Take your B58 engine to the next level – install the MAD 200 Cell Catted Downpipe today and feel the difference every time you hit the throttle.