K.I.T.T. and K.A.R.R. are armored with "Tri-Helical Plasteel 1000 MBS", or Molecular Bonded Shell plating which protects them from almost all forms of conventional firearms and explosive devices. They can only be harmed by heavy artillery and rockets, and even then, the blast usually leaves most of the car's shell intact and only damages internal components. The shell protects every part of the car including the tires. As a result, K.I.T.T. could act as a shield for explosives by driving over bombs and suppressing the blast. A laser is also capable of damaging the alloy, however the shell can only withstand a maximum of 2 shots before being neutralized.