Power Slot rotors are made using the highest quality Original Equipment replacement blanks. Competitors will sacrifice quality by using inexpensive off-shore castings. Typically these are made of inferior porous material and often have less cooling fins than their OE counterpart. These fins also serve to reinforce the rotor and guard against warp age. Power Slot rotors always meet and/or exceed all OE specifications. It’s also important to know that the exclusive Vac-U-Slot is tapered to enhance evacuation of heat and gases. All machining is done in house to Power Performance Group’s application specific tolerances to ensure optimum quality control.