  Slotted Rotors For the look of a racing car, go with slotted rotors. The slots in the rotors allow gas to escape from between the hot rotor and pad. The slots may also contribute extra “bite” against the pad.
Cross-drilling is similar to slotting, but in our experience cross-drilled rotors are much more prone to developing cracks, which center on the drilled holes. For this reason, we don't sell drilled rotors.
Whether or not drilling or slotting actually provides better stopping is a matter of great debate. Many high-performance cars come with non-drilled, non-slotted rotors, and stop just fine.
Mach V carries excellent DBA rotors.
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