These Zimmermann rotors are manufactured in Germany and are of exceptional quality. Cheaper cross-drilled rotors are often not heat treated after drilling and the sharp hole edges can decrease pad life. The cross drilled holes in these rotors have radius edges to increase pad life, prevent cracking and provide visual wear inspection. Great repeat braking performance for autocross, track, or street!  

Color Coating and Rust Proofing Option:
The color coating option will add a double layer of rust proof paint upon the whole rotor. This will mostly help avoid rusting of the rotor hat.

Drill and Slot Option:
Original equipment BLANK rotors are used as a base stock. Each rotor requires a specific drilling or slotting pattern in order not to interfere with the cooling vanes, and this information is programmed and run on a CNC (computer numerical control) machine. All holes are radiused to the correct wear limit. Radiusing, unlike chamfering, provides a smooth transition from rotor surface to the cooling holes. This reduces stress points and allows superior pad performance. All rotors are designed with a unidirectional pattern.  

*We drill and slot all the BLANK rotors "in-house" with this CNC Machine. We receive the original blank rotors and use the CNC Machine to drill and slot these rotors. Please call us 1-818-344-4415 if you have any questions regarding this process.

     
Have a question? 1-818-344-4415
ALL ROTORS PRICED BY THE PAIR.