This part is not an emissions-related part and therefore can be used on Emission Controlled Vehicles.
Excessive heat can cause resins in your brake pad to vaporize or “outgas.” As the brake pad wears, the used friction material turns into a fine dust. This boundary layer of heat, gas and dust builds up between the pad and rotor surfaces and inhibits performance. Here’s where Stoptech’s slotted brake rotors make a big difference.
Stoptech’s exclusive Vac-U-Slots are machined into the rotor and help evacuate gasses and dust, shed heat, and keep the brake pad surface clean. And in wet, raining conditions, Stoptech Vac-U-Slot helps push water off the braking surface for better stopping power.