PowerSlot rotors are finished in a durable black e-coat on the hat, edges and internal vanes to prevent corrosion. The braking surfaces are left in a bare iron finish to improve brake pad bed-in.  
 
Power Slot slotted rotors will deliver superior, reliable braking for virtually all automotive, truck and SUV applications, even under hard driving and severe duty conditions. But for our most demanding customers such as police pursuit vehicles and club racers, we also suggest Power Slot Cryo rotors.
 

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 Power Slot's slotted brake rotors make a big difference.