Take your vehicle’s handling to the next level with PERRIN Adjustable Front Swaybars for FR-S & BRZ. Upgrading your sway bar is the easiest way to improve vehicle handing. Sway bars increase roll resistance and modifies vehicle balance. In general, adding a larger rear sway bar increases oversteer, and adding a larger front sway bar increases understeer. Upgrade both front and rear sway bars to reduce body roll and tune vehicle balance to your preference.