The front shackle hangers are integrated into the front bumper and bolt to factory locations on the frame. The integrated front bumper adds a tremendous amount of strength to the frame. For ultimate versatility, you can get a Full-Width Axle Kit for your CJ without the integrated front bumper. This will let you weld the front shackle brackets onto another bumper of your choice. CJ frames often vary in width from the factory, so you’ll need to plan on some custom adjustin’ during your installation.