The H&R 18mm adjustable rear sway bar for 2021-and-up Subaru BRZ is a vehicle-specific rear anti-roll bar designed to replace the stock unit on those models. As an adjustable component, it enables tuning of rear roll stiffness to influence handling balance while maintaining direct-fit compatibility with the 2021+ BRZ rear suspension layout.
H&R 2021+ Subaru BRZ 18mm Adjustable Rear Sway Bar