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Afco 6640121 Slotted Pillar Vane RH Iron Brake Rotor, 11.75 x 1 Inch

Afco 6640121 Slotted Pillar Vane RH Iron Brake Rotor, 11.75 x 1 Inch

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What's in the Box


This cast iron RH slotted pillar vane rotor from AFCO is designed to give superior strength, decrease rotor weight, and run cooler. Each pillar is diamond shaped and precisely positioned to optimize pad surface support thereby eliminating rotor cupping.

  • Manufactured with premium grade alloys to thermal shock stability
  • Double disked ground to ensure precise flatness
  • Slotted to eliminate brake grassing to reduce pad tapper and increase contact between rotor and pad
  • Rotationally balanced to reduce vibration and improve traction

Instructions (PDF)


Proper Break-In Procedure for Steel or Cast Iron Rotors

New steel/iron rotors should be bedded in before being used in racing conditions. Proper bedding will prepare the rotor surface, prolong the rotor's life, and make it more resistant to thermal checking or cracking under severe braking conditions. The following procedures should be performed when bedding in both steel and cast iron rotors. It is best to bed in a new rotor using a used set of pads, preferably ones which will not create heat rapidly. Generating heat too rapidly will thermal shock the rotors. Likewise, when bedding in a new set of brake pads it is best to perform the process on a used rotor. This new/used bedding process permits controlled bedding of each individual component.

Make sure rotor surfaces are free from oils, grease, and brake fluid. Run vehicle up to a moderate speed and make several medium deceleration stops to heat up the rotor slowly. This will help reduce the chance of thermal shock caused by uneven heating of the rotor. Pull into the pits and allow the rotor to cool to ambient air temperature. Care should be taken not to ride the brakes into the pits as this may hot spot the rotor causing premature wear to the surface or structural damage. 

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