This Schumacher Racing Products chassis brace set is the factory replacement for the Cat PB 4x4 buggy platform. The set includes both the front and rear chassis braces, molded in hard plastic to maintain chassis rigidity during competition use. These braces mount across the chassis to resist flex and keep the drivetrain geometry consistent under load. Features: Includes front and rear chassis braces Molded hard plastic construction Direct factory replacement for Cat PB 4x4 Designed to reduce chassis flex 7/7/26 cs