The Dirt King boxed core supports are built to replace the stock core support and wheel well structure, making room for shock and tire clearance with long-travel suspension systems. They come with adjustable tabs for easy fiberglass mounting. The Dirt King core supports fit 99-06 GM 1500s and bolt in place. Custom mounting is required for the accessories that once mounted to the factory core support.

Compatibility
1999-2006 Chevy Silverado 1500 2WD / 4WD
1999-2006 GMC Sierra 1500 2WD / 4WD