Your trusted guide to JDM Car Parts & Accessories

Resources

Blog
Offers
Tools
Saved Articles

Knowledge

FAQ
Glossary
Topics
Search

About

About Us
How We Test
Our Team
Privacy
Terms

Affiliate Disclosure: Some of the links on this site are affiliate links, meaning we may earn a commission if you click through and make a purchase — at no additional cost to you. We only recommend products we believe in. This helps support the site and allows us to continue providing free content.

Home GlossaryFront Splitter

Body & Aero

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.

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.

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.

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.

← Full glossary