SneedSpeed R53 SR71 Coated and Ported Header with Cat — Performance Exhaust Upgrade
The SneedSpeed R53 SR71 Coated and Ported Header with Cat is a high-performance exhaust header assembly engineered specifically for MINI Cooper S (R52/R53) and JCW models equipped with the W11 1.6 L supercharged engine. Designed to replace the restrictive factory exhaust manifold, this header is a direct-fit upgrade that improves exhaust flow, reduces under-hood heat, and enhances overall engine efficiency with a high-flow catalytic converter included.
Purpose & Performance
Factory exhaust manifolds can limit performance by trapping heat and restricting exhaust gas flow. The SneedSpeed SR71 header is calibrated for improved scavenging and smoother exhaust velocity, which helps the engine expel combustion byproducts more efficiently. This leads to stronger throttle response, broader power delivery, and a richer exhaust note without requiring a complete exhaust system overhaul.
Key Features
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Ported Design for Smooth Flow: The header is precision-ported to reduce turbulence and backpressure, improving exhaust gas velocity over the factory manifold and allowing the engine to breathe more freely.
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Thermal Coating: SR71-grade coating helps limit radiant heat, reducing under-hood temperatures and improving thermal stability. This can protect nearby components and preserve performance in sustained use.
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High-Flow Catalytic Converter Included: Comes with a performance-oriented catalytic converter to maintain emissions compliance while still supporting increased flow and performance.
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Direct Fit for R52/R53: Engineered as a bolt-on replacement for R53 MINI Cooper S and JCW models (also compatible with R52), simplifying installation and eliminating the need for custom modifications.
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Improved Engine Character: Enhances throttle response and contributes to a deeper, more aggressive exhaust tone without sacrificing drivability.
Benefits
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Enhanced Exhaust Efficiency: Ported and coated design facilitates smoother gas flow, improving engine breathing for stronger overall performance.
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Reduced Under-Hood Heat: Thermal coating mitigates heat soak and helps maintain lower temperatures in the engine bay.
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Emission-Friendly Upgrade: The included high-flow catalytic converter balances performance with emissions requirements.
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Bolt-On Installation: No custom fabrication or adaptation required — the header replaces the stock manifold with a direct fit.
Application
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Fits MINI Cooper S and JCW R52/R53 (2002–2008) models with the W11 1.6 L supercharged engine
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Ideal for performance street vehicles, weekend track cars, and builds where exhaust efficiency and throttle response are priorities
