SuperPro 2015 Subaru WRX STI Launch Edition Front/Rear 26mm F/24mm Rear Adjustable Sway Bar Link SetThe SuperPro Roll Control two position adjustable front sway bar is 26mm solid and the rear is a three position adjustable 24mm solid sway bar. Add in the SuperPro Adjustable sway bar links to: eliminate sway bar link flex maintain neutral sway bar positioning maximize all positions on the adjustable Sway Bars All this adds up to a vehicle that is a balanced upgrade by assisting tire grip and this becomes an ultimate handling package upgrade. From all