Fits XF 5.0SC, XFR, and XFR-S. Dyno Proven gains of 31BHP in conjunction with our X-Pipe Center Section, 25 BHP when fitted alone. Combine with our 5.0L Supercharger Pulley, ECU Tune and Sport Catalysts and turn your Jaguar into a Monster with 75BHP and 81ft/lb gains! This system features: Better sound! Smooth V8 burble at lower RPMs, with a more aggressive sound under load Less weight. Lighter than original equipment, improving braking, handling and acceleration. Bolt on fit Increased Performance. More horsepower, smoother torque curve and sharper throttle response. Heat dissipation is vastly improved, reducing heat soak underfloor. Quality Craftsmanship