Welcome to Install 8: The IMFB 4-2-5 Defense. Below, you can see a list of FREE articles on the 4-2-5 Defense. You can also find links to a FREE podcast on the 4-2-5 Defense. The links will be live as soon as the content is ready! Every week we will be rolling out another part of the 4-2-5. The full defensive manual will be available onPatreon.com as exclusive content ($5.00/month). There you can access chalk talks, chalk wars, cut-ups, and the PDF manual for the IMFB 4-2-5 Defense.