B58 True 4.5" Catless Downpipe

B58 True 4.5" Catless Downpipe – Maximum Performance & Sound

Unleash the full potential of your B58-powered BMW with the True 4.5" Catless Downpipe—engineered for maximum power, faster turbo spool, and an aggressive exhaust note. Designed to eliminate the restrictive factory catalytic converter, this high-performance downpipe dramatically improves exhaust flow, reducing backpressure and unlocking significant horsepower and torque gains.

Fits all M240i 340i 440i 540i 740i models 2016+

Fits both Gen 1 & Gen 2 B58

Key Features:

✔ True 4.5" Diameter – The largest, unrestricted design for optimal exhaust flow and performance.
✔ 100% Catless Design – Maximizes power output and turbo efficiency.
✔ Premium T304 Stainless Steel – Corrosion-resistant, durable construction with smooth mandrel bends.
✔ Enhanced Turbo Spool & Sound – Increases throttle response while delivering a deep, aggressive exhaust tone.
✔ Direct Bolt-On Fitment – Precision-engineered for an easy installation with factory-style flanges.
✔ Compatible with OEM & Aftermarket Exhausts – Seamless integration for both stock and modified setups.

Perfect for track use and performance enthusiasts, the B58 True 4.5" Catless Downpipe is a must-have upgrade for those looking to push their BMW to the next level.

⚠ Note: A tune is recommended to maximize performance and prevent check engine lights.

Upgrade your BMW B58 today and experience raw, unrestricted power! 🚀