The EPC 5-inch Catless B58 Downpipe is a top-tier upgrade for BMW and Toyota Supra models with the B58 engine. Designed to maximize exhaust flow, this downpipe helps increase power and torque, giving your vehicle a noticeable performance boost. Made from high-quality stainless steel, it’s engineered for a precise fit with your stock exhaust, ensuring an easy, hassle-free installation.
Fitment Compatibility:
- 2015+: BMW M240i & xDrive
- 2016-2019: BMW 340i & xDrive
- 2016+: BMW 440i & xDrive, BMW 540i & xDrive, BMW 740i & xDrive
- 2017-2020: BMW X3 M40, BMW X4 M40
- 2019+: Toyota Supra 3.0L
- 2020+: BMW M340i
Key Benefits:
- Improved Exhaust Flow: The 5-inch diameter reduces backpressure, increasing horsepower and torque.
- Catless Design: Removes the factory catalytic converter for even more power and a more aggressive exhaust note.
- Built for Durability: Made from premium stainless steel to handle the heat and stress of high-performance driving.
- Easy Installation: Designed for a smooth install with minimal tools, integrating seamlessly with your stock exhaust system.
Performance Gains:
On a tuned BMW or Toyota Supra B58 with the stock turbo, expect a gain of up to 30 horsepower. If you have an upgraded turbo, the performance increase will be even greater.
Features:
- Fits Both Left and Right-Hand Drive Models
- Optimized Airflow: Smooth bends for maximum performance and reduced drone.
- Lifetime Warranty: Backed by a lifetime warranty on defects and fitment.
- 30-Day Returns: Hassle-free returns within 30 days.
- Fast Shipping: Ships within 1-2 business days.
- Perfect Fit: Designed to fit your vehicle’s stock system perfectly.
- Flex Section: Includes a flex section for added flexibility and durability.
Fitment Compatibility:
- 2015+: BMW M240i & xDrive
- 2016-2019: BMW 340i & xDrive
- 2016+: BMW 440i & xDrive, BMW 540i & xDrive, BMW 740i & xDrive
- 2017-2020: BMW X3 M40, BMW X4 M40
- 2019+: Toyota Supra 3.0L
- 2020+: BMW M340i
The EPC 5-inch Catless B58 Downpipe is the perfect mod for anyone looking to unlock more power and get a better exhaust sound from their BMW or Toyota Supra. With solid build quality, easy installation, and a noticeable performance boost, it’s a must-have for B58 engine enthusiasts.


















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