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Home GlossaryGT Wing

Body & Aero

GT Wing

A large adjustable rear wing mounted on chassis-attached uprights, designed to generate measurable downforce at speed. Common on time-attack and Super GT cars. Effective only when mounted in clean airflow above the roofline. Voltex, APR, and Garage Defend make popular JDM-fitment GT wings. Note: a GT wing differs from a "spoiler," which only redirects airflow without generating significant lift counteraction.

Related Terms

Canard (Dive Plane)

A small angled wing mounted on the front bumper that generates front downforce and helps balance the rear wing's lift counteraction. Canards add front grip in high-speed corners but cause drag. Common on Time Attack RX-7, R34, and Evo IX builds running serious aero packages.

Front Splitter

A flat horizontal panel extending forward from the front bumper, creating a low-pressure zone underneath the front of the car to generate downforce. Splitters require structural support rods to handle aerodynamic loads at speed. The CW Motorsports and Voltex front splitters used on time-attack RX-7s set the JDM standard.

Underbody Diffuser

A shaped panel under the rear of the car that accelerates airflow exiting from beneath the chassis, lowering pressure under the car and generating downforce. Pairs with a front splitter to create end-to-end balance. Properly designed diffusers can add 100+ kg of downforce at 200 km/h on time attack vehicles.

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