When the driver starts turning the steering wheel, the suspension geometry of the front wheels generates a force that presses the inner turning wheel hard into the ground, and this force pulls the vehicle towards the center of the turning circle.

STI flexible parts play the role of promptly transmitting the necessary force to where it is needed.

Without delay in steering operation, the front inner wheels pull the vehicle towards the center of the turning circle, while the rear wheels instantly cancel out the opposite moment, allowing the driver to start turning exactly when they want.

By shifting the load smoothly from the inner wheels to the outer wheels when entering a turn, resulting in stable driving using all four wheels.

Flexible parts are unique stiffening components with a ball joint mechanism that promote ideal body deformation during driving.

This enhances the continuous contact of all four wheels with the ground, thereby improving both driving stability and ride comfort.

Being able to control the vehicle exactly as the driver intends means less fatigue and better safety, so that the driver can fully embrace their time behind the wheel.

Incorporating a pillow ball in the center of the aluminum-alloy hollow rod allows it to move freely, just like a biological joint—this created STI's unique performance.

Ensuring flexibility—the opposite of rigidity—heightens the performance of SUBARUs, while maintaining collision safety.

Improving the uniformity of chassis rigidity, raising the level of cornering performance and countering vertical forces from the ground with a flexible structure ensures stable and enjoyable ride comfort, while also reducing shocks caused by uneven road surfaces.

Feel the enjoyment of driving the way you want.