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The F30 Saloon, F31 Estate, and F34 Gran Turismo BMW 340i represent the perfect blend of everyday practicality and immense performance potential. Powered by the legendary 3.0-litre turbocharged B58 Gen 1 (B58B30M0) engine producing 322bhp, and available with either the smooth ZF8 8HP50 automatic or the engaging Getrag GS6-45BZ manual gearbox, this platform is a true enthusiast favorite. Whether utilizing the standard rear-wheel-drive layout or the optional xDrive system, the 340i delivers incredibly versatile performance. JXL Performance provides top-tier aftermarket hardware to unlock the absolute maximum potential of your vehicle.

Explore our full selection of BMW 340i upgrades by category: To boost engine output and enhance your inline-six exhaust note, browse our Intake and Cooling ranges alongside high-flow Exhaust setups and uprated Turbocharger hardware. For rapid power gains, choose our Fuel/Ignition tuning modules, or fortify your B58 engine block with Engine Build forged components for high-boost projects. Optimize power delivery with our Drivetrain, Suspension, and Wheels/Spacers products, while securing fade-free stopping power in our Brakes department. Finally, elevate your vehicle's stance with Exterior aero trim and Interior driver upgrades, while keeping your 340i running reliably with OEM-spec Service Parts. You can also explore our complete catalog in the Shop All Parts collection.