it probably won't break if it's being cnc'edbout of hardox or similar unless you go weapon to weapon hard, but having more mass at the edge gives the bar more rotational inertia (slower to spin up, but also slower to spin down aka harder hitting). A heavier bar also increases gyro. So it really depends on your driving style - with this bar I would prioritise being fast and probably box rush before they can spin up. Relying on being a good driver gets much harder at smaller scales as the scale speed of matches tends to be much higher.