Forge Motorsport Toyota Yaris GR Upper Airbox Induction Kit
The Forge Motorsport Toyota Yaris GR Upper Airbox Induction Kit offers significant performance gains, including 13bhp and 8nm peak torque gains. Made with high-quality carbon fibre, this kit includes a pleated performance air filter and ensures increased air flow without triggering engine management check lights (EML). The kit comes with a lifetime warranty* for added peace of mind.
Designed to work in collaboration with the Forge Motorsport Inlet Duct (FMINLD1), this kit features a replacement upper airbox that mounts to the stock lower airbox. The increased diameter from 80mm to 89mm results in a volumetric increase of around 20% in the connecting pipe from the turbo inlet adapter to the airbox. The 3D scan data ensures optimal positioning of the cone filter inside the lower airbox for maximum airflow into the inlet tract.
The kit has been extensively tested to ensure performance gains without compromising driveability. The 3D printed modular design allowed for different variations of MAF position, diameter, and airflow to be tested on the road and the dyno, resulting in the optimum design for real-world driving conditions. Additionally, the kit offers a small gain in induction noise.
With the stock turbo inlet, the kit produced peak gains of 13bhp at the wheels and peak torque gains of 8nm. The dyno graph shows a noticeable increase in power earlier in the rev range, resulting in improved acceleration. The kit is designed for easy installation and comes with full-color instructions.
Progressive Parts offers fitting of the Forge Motorsport Toyota Yaris GR Upper Airbox Induction Kit at our performance workshop.





