Close up of cross drilled and slotted rotor

BRAKE TECHNOLOGY

Cross-Drilled / Slotted 2-Piece Rotors

There are many good reasons why cross-drilled and slotted rotors have been recognized as the highest performing brake rotors available. Quite simply, they are. The cross-drilled holes aid in cooling and allowing the rotor to breath while at the same time add additional bite between the rotor and pad. When manufacturing a cross-drilled slotted rotor it is extremely important that the rotor be designed to be finished with this pattern. This means the drilled holes must line up with the internal cooling vanes so as to not affect the overall structure of the rotor.

AP Racing Radi-CAL by STILLEN 6 pot caliper with cross drilled and slotted rotor

SPECIALIZED BITS ARE USED TO CHAMFER THE EDGES OF THE HOLES TO MINIMIZE THE POTENTIAL OF STRESS FRACTURES FROM FORMING ON THE HOLE'S LEADING EDGES.

Additionally the holes must be finished with a chamfered edge to prevent stress fractures from forming on this leading edge. By giving the hole a radius edge it allows the iron to expand and contract naturally without creating a possible stress point.

While cross-drilled rotors and slotted rotors will offer the best performance, they can also wear faster than other rotor machined patterns. In most cases the wear differences between rotor finishes is negligible and most people won't notice the difference. Both surface designs will sweep the pad face completely to allow for out gassing to keep the pad material surface fresh and at optimal performance levels.

Two cross drilled and slotted rotors

THESE HIGH PERFORMANCE 2-PIECE CROSS-DRILLED & SLOTTED ROTORS ARE CAD-DESIGNED FOR A PERFECT BRAKE PAD SWEEP AND ALIGNMENT WITH INTERNAL COOLING VANES.

6 piston black brake caliper with cross drilled and slotted rotor

BRAKE TECHNOLOGY

AP Racing Radi-CAL by STILLEN with red caliper and j-hook brake disc AP RACING Radi-CAL BY STILLEN AP Racing Radi-CAL by STILLEN six pot caliper in red or black Radi-CAL CALIPERS Vented brake discs Radi-CAL DISCS J-hook rotor Radi-CAL J-HOOK ROTORS Cross drilled and slotted rotor Radi-CAL DRILLED/SLOTTED ROTORS High performance brake pads and brake lines Radi-CAL PADS & BRAKE LINES
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