McLaren 720S Rear Spoiler is a sophisticated piece of “active” aerodynamics. Unlike a fixed wing, this unit functions as an airbrake and an active downforce generator, tilting and extending based on speed and braking force.

The Active Wing Assembly

Sourcing this part usually involves the entire wing “blade” and the internal hydraulic/mechanical mechanism.

• Standard OEM Blade: Usually finished in “Dark Palladium” or body-matched paint.

• MSO Carbon Fibre Blade: A popular factory upgrade that replaces the composite blade with exposed carbon fiber. This is purely aesthetic but highly desirable for resale.

• Mechanism: The spoiler is powered by an electric or hydraulic motor assembly (depending on the build year) that controls the pitch and height.  McLaren 720s Rear Spoiler Spoiler

Buying & Technical Intelligence

If you are looking for part number 14BA451CP (or similar variations), here is what you need to know:

• Calibration: If you replace the spoiler or the motor, you will likely need to perform a “Spoiler Calibration” via the McLaren Diagnostic System (MDS). If the car doesn’t detect the wing’s position correctly, it may trigger an “Aero System Failure” and limit the car’s top speed.

• The “Spider” Difference: Note that the 720S Spider rear spoiler has a slightly different shape and mechanism to account for the airflow over the flying buttresses. Ensure you are buying the version that matches your body style (Coupe vs. Spider).