what is the difference between the rage 40KE 100 grain vs 100 grain 2 blade Rage expandable? Wondering if you can change out tip and blades to make it a regular 2 blade instead of 40KE?

Thanks

The rage 40 KE is just a smaller version of the rage 2 blade. The 40 KE has 1.5'' cutting diameter instead of the 2 blade's 2.3'' cutting diameter. The 40 KE is made for bow with low kinetic energy or low poundage. So you should be able to switch components from one rage broadhead to another. But if you shoot under 60 pounds I would use the 40 KE.