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The 2019 onwards BMW 3 Series G20 M340i is the ultimate everyday performance saloon. Powered by the legendary 3.0-litre turbocharged B58 engine (in both Gen 2 and Gen 3 mild-hybrid formats), it delivers between 374bhp and 386bhp. Paired with the flawless 8-speed ZF8 automatic transmission and available in both rear-wheel drive and xDrive all-wheel-drive configurations, this platform blends executive luxury with supercar-baiting acceleration. JXL Performance provides top-tier aftermarket hardware to unlock the absolute maximum potential of your G20 M340i.

Explore our full selection of BMW G20 M340i 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 M340i running reliably with OEM-spec Service Parts. You can also explore our complete catalog in the Shop All Parts collection.