RM Engineering GT4+ Splitter Kit For TOYOTA A90 SUPRA

Engineered for Maximum Performance. Inspired by Gazoo Racing GT4 Racecars. Proven on Track.

The Ridgeline Motorsport GT4+ Time Attack Aero Kit is our most comprehensive aerodynamic package for the Toyota GR Supra A90 platform.

Developed from the aerodynamic foundation of the Toyota GR Supra GT4 race car, the GT4+ system evolves beyond the limitations of the original GT4 rulebook. Each component has been redesigned using real-world track testing and competition experience to increase aerodynamic performance while maintaining a balanced relationship between front and rear downforce.

The complete package combines the GT4+ front lip, tunneled front splitter, canards, rear wing, hood vent, and roof fin into one integrated aero system for serious track-day drivers and time attack competitors.

Vehicle Fitment

Designed for:

• Toyota GR Supra A90/A91 Supra

Please confirm your vehicle year, bumper configuration, hood configuration, and competition-class requirements before ordering.

Track-Proven Performance

The GT4+ Aero Kit was developed and tested on road-going A90 Supras equipped primarily with bolt-on modifications.

The recorded results below were achieved on vehicles with no significant weight reduction and using 275/35R18 200TW street-class tires.

A90 Supra Testing Results

GRIDLIFE — WeatherTech Raceway Laguna Seca

• Best recorded lap: 1:33.962
• Stock turbo
• Stock transmission

Global Time Attack Finals — Buttonwillow CW13

• Second place
• Best recorded lap: 1:49.132

Real results. Real podiums. Real validation.

GT4+ Front System

The GT4+ Front Lip features a reinforced design developed to create a sealed front aerodynamic plane when paired with the GT4+ Tunneled Splitter.

The front lip may also be installed without the lower splitter. However, using the lip by itself may reduce structural support and service life, particularly during track use or contact with road surfaces.

Front Lip Features

• Reinforced GT4-derived design
• Designed to integrate with the GT4+ Tunneled Splitter
• Creates a cleaner transition between the bumper and splitter
• May be installed separately
• Installation hardware included
• GT4+ Tunneled Front Splitter

The GT4+ Tunneled Front Splitter combines the front lip and lower splitter into a two-piece aerodynamic system.

Its one-piece molded tunnel is designed to improve airflow management, increase rigidity, and generate additional front-end downforce during medium- and high-speed driving.

Splitter Features

• Two-piece front lip and splitter system
• One-piece molded aerodynamic tunnel
• Designed to increase front-end downforce
• Reinforced construction for improved rigidity
• Installation hardware included
• Minor modification of OEM vehicle components required