It's really no surprise why the PhysiX and AstroPhysiX have been wildly popular ever since their respective debuts. After all, the PhysiX offers one of the shapeliest reactions available, and the AstroPhysiX follows it up with stellar performance when the pattern opens up, and more length and backend are required. But until now, there really hasn’t been a PhysiX truly suited for heavy oil. Well, consider the problem solved! The Proton PhysiX is here to give you traction and hook on virtually any heavy oil condition imaginable.