Milltek Sport BMW M3/M4 (G8X) High Flow Downpipe
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Delivery & Availability
Delivery & Availability
Not all products are held in stock due to the specialist nature of many performance parts. While most items are available for next working day dispatch, selected products may carry extended supplier or production lead times.
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Description
Milltek Sport BMW M3/M4 (G8X) High Flow Downpipe
Product Overview
This Milltek Sport high-flow sports catalyst/downpipe upgrade is designed for the Milltek Sport BMW M3/M4 (G8X) High Flow Downpipe. It is intended to improve exhaust gas flow compared with the standard restrictive section while retaining a catalytic converter in the upgraded assembly.
Product Details
Milltek Sport BMW M3/M4 (G8X) High Flow Downpipe Unleash exhilarating performance Enhance the performance of your BMW M3/M4 (G8X) with the Milltek Sport High Flow Downpipe. This meticulously engineered downpipe is designed to optimize exhaust flow; resulting in increased power; improved throttle response; and a more exhilarating sound. Key Features: Increased Power and Torque: Replaces the restrictive factory downpipe; significantly reducing backpressure and unleashing more horsepower and torque. Enhanced Throttle Response: Experience sharper throttle response and improved acceleration throughout the rev range. Optimized Exhaust Flow: Designed with larger diameter pipework and a high-flow sports catalyst; this downpipe optimizes exhaust gas flow for maximum performance gains while minimizing emissions. Premium Quality: Crafted from durable T304 stainless steel; ensuring long-lasting performance; corrosion resistance; and a finish that complements the cars high-performance aesthetic. Precision Fitment: Engineered for a seamless; hassle-free installation on your G8X M3/M4. Complements Milltek Systems: Pairs perfectly with Milltek Sport cat-back exhaust systems for a complete high-per
Key Features
- Vehicle-specific Milltek Sport fitment for the application shown above.
- Manufactured from high-quality 304L stainless steel for corrosion resistance and long-term durability.
- Designed and manufactured in the UK by Milltek Sport.
- Engineered as a performance exhaust upgrade with fit; flow and sound in mind.
Professional Fitting
Fitting is available - please contact us for a quote.


