Rush takes the flat-tip formula and narrows it. The contact patch is smaller than Flat’s and it carries fewer gear teeth, which means each pass along the X-Celerator rail bleeds off less rotational energy. The Xtreme Dash it produces is slower, but it comes more often — the bit is named for the frequency of attacks, not their individual violence.
That makes Rush the controllable option in the attack family. It holds a stable line, resists bursting well, and doesn’t punish an imperfect launch the way the low-profile bits do, which is why it’s regarded as a legitimate deck-worthy bit rather than a beginner’s part. The flip side is ceiling: a Rush combo hits softer per contact, and against a heavy defense blade that softness can mean the knockout simply never arrives.
Pair it with blades that supply their own recoil, since Rush won’t manufacture much on its own. Players who want more finishing power swap up to Flat or Gear Flat; players who want the same controlled behaviour lower to the ground look at Low Rush, which is a separate part and not interchangeable.