Subframe Brace Kit By MPCAllows use of a larger rear sway bar Increase steering response & rigidity 6061 T6 Aircraft Grade Aluminum Construction High Strength, Rust Resistant Hardware Included Built in the USA The MPC Subframe Brace Kit was designed to prevent the infamous 'subframe tear out' when upgrading to a larger rear sway bar. Our kit is proven to work with the ITR CTR 22 23mm OEM Sway Bar, Mugen 26mm Sway Bar and any other sway bar using the ITR style mounting points.