Roto-Tech drills their Extreme Performance Brake Rotors on CNC machines using the latest CAD-CAM design for perfect balance and alignment to yield maximum stopping power. The primary reason for cross drilling is that rotors will run 100Â° to 200Â° cooler, which reduces warping to allow for greater braking power and generally longer rotor/pad life. Cross-drilled holes constantly keep the braking surface clean to provide improved friction bite and cleaner wheels. Drilled chamfered holes supply an exit route for gas and dust that results in better heat dissipation, and they help cool rotors for less brake fade. Holes also drain water from the friction surface when driving in wet weather.
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