CUSCO Power Brace Seat Rail Plus Set - BRZ, 86 Hyundai and other special parts are

and other special parts are made by HKS special turbo technology

These are a direct replacement for the factory springs

Highly recommended step-up upgrade especially for boost-up or turbo upgrade applications

Its Pull-Type relief design ensures stable operation regardless of the amount of boost pressure

Its original design

CUSCO Power Brace Seat Rail Plus Set - BRZ, 86 Hyundai and other special parts areThese items are a direct bolt on application between the seat rail and the vehicle chassis. In addition to creating a brace across the center bottom side of the chassis the item also has multiple anchor mounts for aftermarket seat belt harness.