Description
The Milltek Large Bore Downpipe with Hi-Flow Sports Catalyst (SSXBM977) is engineered to provide significant performance gains and a more aggressive exhaust sound for your BMW 428i Coupé (F32/F33). This high-quality upgrade replaces the restrictive OEM downpipe with a larger, high-flow design, allowing increased exhaust flow, improved efficiency, and a more noticeable sound aesthetic.
Fabricated from 304L Aircraft Grade stainless steel, the Milltek downpipe is designed to withstand harsh conditions and resist corrosion, making it a durable addition to your vehicle. With a 76mm (3") pipe diameter, this downpipe ensures minimal back pressure and greater exhaust velocity, allowing for a freer flow of exhaust gases through the system.
Key Features
Large Bore Design:
- A larger diameter than standard OEM parts provides improved exhaust flow, enhancing performance and efficiency.
Hi-Flow Sports Catalyst:
- This high-flow catalyst reduces back pressure, enabling faster and more efficient exhaust gas movement, which results in increased horsepower and torque.
Stage 2 ECU Remap Required:
- For optimal performance gains, a Stage 2 ECU remap is essential when installing this downpipe.
Durable Construction:
- Constructed from 304L Aircraft Grade stainless steel, the downpipe is built to last through any conditions, providing long-term reliability.
Performance Gains:
- Expect significant power and torque gains, as well as a more aggressive exhaust note.
Specifications
- SKU: SSXBM977
- Product Type: Downpipes, Sport Cats & Manifolds
- Resonated: Not Applicable
- Pipe Diameter: 76mm (3")
- EC Approved: No
- Motorsport Use Only: Yes
Vehicle Compatibility
The Milltek Large Bore Downpipe with Hi-Flow Sports Catalyst (SSXBM977) is designed for the following models:
BMW 4 Series (F32/F33):
- 428i Coupé (Manual, Without tow bar, N20 Engine Only)
- 428i Coupé (Automatic, Without tow bar, Non X-Drive, N20 Engine Only)
- Production years: 2013–Present
Installation Notes
For Milltek Sport Cat-Back System Only:
- This downpipe is designed to fit in conjunction with the Milltek Sport Cat-Back Exhaust System.
Requires Stage 2 ECU Remap:
- A Stage 2 ECU remap is required to optimize performance gains and unlock the full potential of this downpipe.
OE System Requires Cutting:
- The original equipment (OE) system requires cutting for installation.
Why Choose Milltek Sport?
Milltek Sport is renowned for producing high-quality performance exhaust systems designed to enhance both sound and power. All of Milltek's products are manufactured in the UK using premium materials such as 304L Aircraft Grade stainless steel, ensuring exceptional durability and performance. With distribution across over 90 countries, Milltek is a trusted name in the aftermarket performance industry, delivering accessible and reliable solutions for all enthusiasts.
Enhance Your BMW 428i Coupé’s Performance and Sound with the Milltek SSXBM977 Downpipe
Upgrade your BMW 428i Coupé with the Milltek Large Bore Downpipe with Hi-Flow Sports Catalyst (SSXBM977). Perfect for those looking to achieve significant performance gains and a more aggressive exhaust note, this downpipe offers the optimal balance of increased efficiency and enhanced driving experience. Make sure to pair it with the Milltek Sport Cat-Back System and perform a Stage 2 ECU remap for maximum benefits.
