Bentley BL2291

The Flying Spur Mulliner W12 exhaust system (SKU: be-bl2291) is an essential component engineered for peak performance in Bentley's flagship sedan. Crafted with precision to complement the vehicle's 6.0-liter twin-turbocharged W12 engine, this system ensures optimal exhaust flow while maintaining Bentley's signature refinement. Technical specifications and design The original equipment exhaust system for the Flying Spur Mulliner W12 features mandrel-bent 304 stainless steel construction with vacuum-formed alloy thermal shields. Designed to handle 664 lb-ft of torque at 1,350 RPM, it integrates with the vehicle's advanced cylinder deactivation system for seamless transitions between 12- and 6-cylinder operation[6]. The quad oval tailpipes employ gas-tungsten arc welding for cleaner joints and improved durability under extreme thermal cycling. Performance characteristics This exhaust system reduces backpressure by 18% compared to standard models through its dual-branch architecture with 63.5mm diameter piping. The active valve system operates in three modes: - Comfort: 86 dB at 3,500 RPM - Sport: 92 dB with 20% faster valve response - Custom (via Bentley Drive Dynamics) When paired with the W12 engine's 900Nm torque output, the system helps achieve 0-60 mph acceleration in 3.7 seconds while maintaining cabin sound levels below 62 dB at highway speeds[1][6]. Compatibility and installation Direct replacement for: - 2021-2025 Flying Spur Mulliner W12 models - Compatible with both standard and carbon ceramic brake configurations The system's modular design allows section replacements without full assembly removal. Installation requires: 1. Removing underbody aero panels (6x T45 bolts) 2. Disconnecting EFM actuators (2-pin connectors) 3. Torqueing manifold studs to 42 Nm + 90° angle 4. Performing post-installation DTC clearance Maintenance and care Recommended service intervals: - Visual inspection every 15,000 miles - Hanger bushing lubrication every 30,000 miles - Full thermal imaging scan every 50,000 miles Use only Bentley-approved stainless steel polish (MB 352.7 spec) to maintain the chrome tailpipe finish. Avoid alkaline-based wheel cleaners which can cause pitting in the satin-black mid-section. Explore compatible components: Genuine parts for Ferrari Genuine parts for Bentley Genuine parts for Maserati Genuine parts for Lamborghini Contact technical support Expert support Our Bentley-certified technicians provide installation guidance and authenticity verification for all W12 exhaust components. Contact our parts specialists for OEM vs aftermarket performance comparisons, or to request thermal imaging reports from previous installations.