Designed with sophisticated CAD modelling tools to ensure high flow and a perfect fit, these BMW M4 S58 Catless Downpipes are built for maximum performance, heat control, and reliability.
With a range of diameters from 3 to 5.5 inches depending on the application, are replacing the OEM downpipes, Laser-cut brackets to fit onto the OEM-provided mounting points.
Completely assembled and TIG welded with love from experienced hands.
The Perfect Catalytic Converter/ Particulate filter bypass system to unleash Performance.
Key Features of BMW M3 / M4 S58 (G80-81-82-83) - Catless Downpipes:
Built for high-performance S58 applications, BlackBoost Catless Downpipes deliver enhanced flow, durability, and race-proven engineering for drivers looking to buy BMW M4 S58 Downpipes Australia.
Key features include:
- Beautiful Racing Exhaust note
- Huge exhaust flow improvement
- Completely Bypass Primary and secondary Catalytic
- Converters DPF & OPF*
- High Power/Torque Gains depending on mods
- Support power level proven over 1000 WHP
- Reduces back pressure on Turbo applications
- Built entirely in low carbon 304 Stainless Steel
- Mandrel-bent with laser-cut components
- Handmade Tig welded in House
- Bolt-on Plug and Play installation
- Compatible With BlackBoost and other Turbo Upgrades
Not Street Legal. For race use only. Requires a tune.
Frequently Asked Questions
Will BMW M3/M4 S58 Catless Downpipes improve turbo response and throttle feel?
Yes. By removing the restrictive factory catalytic converters, BlackBoost Catless Downpipes reduce backpressure, allowing the S58 twin-turbo system to expel exhaust gases more efficiently. This can improve turbo spool characteristics, throttle response, and overall engine performance, especially when combined with supporting modifications and tuning.
Are S58 Catless Downpipes suitable for high-power BMW M3/M4 builds?
Yes. BlackBoost S58 Catless Downpipes are engineered for demanding performance applications and support power levels proven over 1000 WHP. They are designed to handle upgraded turbo setups, aggressive tuning, and high-flow exhaust requirements while maintaining reliable construction.
Do BMW M4 S58 Catless Downpipes require an ECU tune after installation?
A tune is strongly recommended after installing catless downpipes. Removing the factory catalytic converters can trigger a check engine light (CEL), and proper tuning helps optimise performance, airflow changes, and engine calibration for the upgraded exhaust system.
What makes BlackBoost S58 Downpipes different from standard aftermarket options?
BlackBoost S58 Downpipes are designed using advanced CAD modelling for precise fitment and improved exhaust flow. They feature low-carbon 304 stainless steel construction, mandrel-bent piping, laser-cut components, and in-house TIG welding for durability and consistent performance.
Will installing Catless Downpipes change the sound of my BMW M3/M4 S58?
Yes. Catless Downpipes significantly enhance the exhaust character of the S58 engine by creating a deeper, sharper, and more aggressive exhaust note. The increased flow also makes turbo sounds and the engine’s performance character more noticeable, especially when paired with other exhaust upgrades.