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The 2019 onwards BMW X3M and X4M redefine the capabilities of the modern performance SUV. Combining extreme practicality with blistering straight-line speed, the 3.0-litre twin-turbo S58 engine produces 480bhp in standard guise and 510bhp in the coveted Competition models. Transmitting this immense power through an 8HP76AZ ZF8 automatic gearbox and the highly versatile M xDrive all-wheel-drive system, these high-riding M cars offer physics-defying agility. JXL Performance provides the elite aftermarket hardware required to push this flagship SUV platform even further.

Explore our full selection of BMW X3M and X4M upgrades by category: Enhance your S58 engine's breathing with our Intake and Cooling ranges, paired with high-flow Exhaust setups and uprated Turbocharger hardware. For staggering power gains, choose our Fuel/Ignition tuning modules, or prepare your block for massive boost using Engine Build forged components. Optimize power transfer across the M xDrive system with our Drivetrain, Suspension, and Wheels/Spacers products, while ensuring reliable deceleration via our Brakes department. Finally, customize your aggressive styling with Exterior aero trim and Interior upgrades, whilst keeping the complex powertrain healthy using OEM-spec Service Parts. You can also browse our complete catalog in the Shop All Parts collection.