Boxed Core Supports

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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. Compatibility1999-2006 Chevy Silverado 1500 2WD / 4WD1999-2006 GMC Sierra 1500 2WD / 4WD Show more