The StopTech slotted rotors are a direct replacement to the factory rotors found on your Si Coupe or Sedan, and provide improved braking performance both in wet and dry braking. These rotors are slotted, whereas the OE rotors are not. The slots aid with heat and brake dust dispersal, as well as preventing glazing of the pads, as well as providing better crack resistance.
The black e-coating on the rotor also protects against corrosion, while simultaneously providing a sleeker look.