Progress 22mm Adjustable Front Anti-Roll Bar Kit 2008+ Subaru WRX STiProgress Technology 22mm Adjustable Front Anti Roll Bar Kit 2008+ Subaru WRX STI Part #: 61. 232 Overview The Progress 22mm Adjustable Front Anti Roll Bar Kit is designed to enhance the handling and stability of your Subaru WRX STI. Engineered for enthusiasts who seek improved cornering performance and reduced body roll, this kit replaces the factory sway bars with larger, stiffer alloy steel components. Whether you're on the street, at the track, or